Small-Diameter Bearing (Open Type, Double Shielded, Rubber Seal Type)
Caution
- Some of the items are scheduled to be discontinued as of end of March in 2023. The manufacturer keep the items produced but they are not available with Misumi.
There are not the replacement items and the plan to resumption of sale. Please check the quotation and order screen for details.
Product Description
A high-quality radial ball bearing consisting of an inner ring, outer ring, balls, retainer, and seal.
[Features]
· High-quality small-diameter bearings from a manufacturer that specializes in small-diameter ball bearings. Available from ⌀2 (2 mm inner diameter).
·One of the most commonly used radial ball bearing, consisting of an inner ring, outer ring, balls, retainer, and seal.
·In addition to radial loads, axial loads in both directions can be applied.
·Flanged bearings are deep groove ball bearings with a flange on one side of the outer ring, and because there is no need to provide a shoulder on the inner diameter of the housing, high-precision through hole drilling is possible.
·The flanged type can be mounted using the side of the housing as a reference, and the side must be processed with high accuracy for squareness.
[Applications]
·Since friction torque is small, it is ideal for places where high-speed rotation is required and applications requiring low noise and low vibration.
Drawing
600 type / MR type
Inner diameter 1–4 mm
600 type / MR type
Inner diameter 5–9 mm
F600 type / MF type
Inner diameter 1 to 4 mm
F600 type / MF type
Inner diameter 5 to 9 mm
SMT type
Inner diameter 10 to 15 mm
Specifications Table
600 type / MR type
Inner diameter 1–4 mm
| Part number | Main Dimensions (mm) | Standard rated load | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Open type | Shield Shape | Seal Type | d | D | B | B1 | r (*1) Minimum | r 1(*1) Minimum | (N) | N (kgf) | |||
| Cr | Cor | Cr | Cor | ||||||||||
| 681 | - | - | - | 1 | 3 | 1 | - | 0.05 | - | 80 | 23 | 8 | 2.5 |
| MR31 | - | - | - | 1 | 3 | 1.5 | - | 0.05 | - | 80 | 23 | 8 | 2.5 |
| 691 | - | - | - | 1 | 4 | 1.6 | - | 0.1 | - | 138 | 35 | 14 | 3.5 |
| MR41X | MR41XZZ | - | - | 1.2 | 4 | 1.8 | 2.5 | 0.1 | 0.1 | 138 | 35 | 14 | 3.5 |
| 681X | 681XZZ | - | - | 1.5 | 4 | 1.2 | 2 | 0.05 | 0.05 | 112 | 33 | 11 | 3.5 |
| 691X | 691XZZ | - | - | 1.5 | 5 | 2 | 2.6 | 0.15 | 0.15 | 237 | 69 | 24 | 7 |
| 601X | 601XZZ | - | - | 1.5 | 6 | 2.5 | 3 | 0.15 | 0.15 | 330 | 98 | 34 | 10 |
| 682 | 682ZZ | - | - | 2 | 5 | 1.5 | 2.3 | 0.08 | 0.08 | 169 | 50 | 17 | 5 |
| MR52B | MR52BZ | - | - | 2 | 5 | 2 | 2.5 | 0.1 | 0.1 | 187 | 58 | 19 | 6 |
| 692 | 692ZZ | - | - | 2 | 6 | 2.3 | 3 | 0.15 | 0.15 | 330 | 98 | 34 | 10 |
| MR62 | MR62ZZ | - | - | 2 | 6 | 2.5 | 2.5 | 0.15 | 0.15 | 330 | 98 | 34 | 10 |
| MR72 | MR72ZZ | - | - | 2 | 7 | 2.5 | 3 | 0.15 | 0.15 | 385 | 127 | 39 | 13 |
| 602 | 602ZZ | - | - | 2 | 7 | 2.8 | 3.5 | 0.15 | 0.15 | 385 | 127 | 39 | 13 |
| 682X | 682XZZ | - | - | 2.5 | 6 | 1.8 | 2.6 | 0.08 | 0.08 | 208 | 74 | 21 | 7.5 |
| 692X | 692XZZ | - | - | 2.5 | 7 | 2.5 | 3.5 | 0.15 | 0.15 | 385 | 127 | 39 | 13 |
| MR82X | - | - | - | 2.5 | 8 | 2.5 | - | 0.2 | - | 560 | 179 | 57 | 18 |
| 602X | 602XZZ | - | - | 2.5 | 8 | 2.8 | 4 | 0.15 | 0.15 | 550 | 175 | 56 | 18 |
| MR63 | MR63ZZ | - | - | 3 | 6 | 2 | 2.5 | 0.1 | 0.1 | 208 | 74 | 21 | 7.5 |
| 683A | 683AZZ | - | - | 3 | 7 | 2 | 3 | 0.1 | 0.1 | 390 | 130 | 40 | 13 |
| MR83 | - | - | - | 3 | 8 | 2.5 | - | 0.15 | - | 560 | 179 | 57 | 18 |
| 693 | 693ZZ | - | - | 3 | 8 | 3 | 4 | 0.15 | 0.15 | 560 | 179 | 57 | 18 |
| MR93 | MR93ZZ | - | - | 3 | 9 | 2.5 | 4 | 0.2 | 0.15 | 570 | 187 | 58 | 19 |
| 603 | 603ZZ | - | - | 3 | 9 | 3 | 5 | 0.15 | 0.15 | 570 | 187 | 58 | 19 |
| 623 | 623ZZ | - | - | 3 | 10 | 4 | 4 | 0.15 | 0.15 | 630 | 218 | 64 | 22 |
| 633 | 633ZZ1 | - | - | 3 | 13 | 5 | 5 | 0.2 | 0.2 | 130 | 485 | 133 | 49 |
| MR74 | - | - | - | 4 | 7 | 2 | - | 0.1 | - | 310 | 115 | 32 | 12 |
| MR74Z | MR74ZZ | - | - | 4 | 7 | - | 2.5 | - | 0.1 | 255 | 107 | 26 | 11 |
| MR84 | MR84ZZ | - | - | 4 | 8 | 2 | 3 | 0.15 | 0.1 | 395 | 139 | 40 | 14 |
| 684A | 684AZZ1 | - | - | 4 | 9 | 2.5 | 4 | (0.15)*1 | (0.15)*1 | 640 | 225 | 65 | 23 |
| MR104 | R104BZZ | - | - | 4 | 10 | 3 | 4 | 0.2 | 0.15 | 710 | 270 | 73 | 28 |
| 694 | 694ZZ | - | - | 4 | 11 | 4 | 4 | 0.15 | 0.15 | 960 | 345 | 98 | 35 |
| 604 | 604ZZ | - | - | 4 | 12 | 4 | 4 | 0.2 | 0.2 | 960 | 345 | 98 | 35 |
| 624 | 624ZZ1 | - | - | 4 | 13 | 5 | 5 | 0.2 | 0.2 | 130 | 485 | 133 | 49 |
| 634 | 634ZZ1 | - | - | 4 | 16 | 5 | 5 | 0.3 | 0.3 | 173 | 670 | 177 | 68 |
- (^*1) Values in ( ) do not comply with JIS B 1521.
- The reference for the basic dynamic load rating for stainless steel products is multiplied by a factor of 0.85.
| Part Number Open Type | Allowable rotational speed (min⁻¹) | Mounting dimensions (mm) | Mass (g) (Reference) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Grease Lubrication Open Type Z/ZZ | Oil Lubrication Open Type z | |||||||||
| DA Minimum | Db Maximum | Da Maximum | Db Minimum | ra Maximum | rb Maximum | Open type | Shield Shape | |||
| 681 | 130,000 | 150,000 | 1.4 | - | 2.6 | - | 0.05 | - | 0.03 | - |
| MR31 | 130,000 | 150,000 | 1.4 | - | 2.6 | - | 0.05 | - | 0.04 | - |
| 691 | 100,000 | 120,000 | 1.8 | - | 3.2 | - | 0.10 | - | 0.09 | - |
| MR41X | 110,000 | 130,000 | 2.0 | 1.9 | 3.2 | 3.5 | 0.10 | 0.10 | 0.10 | 0.14 |
| 681X | 100,000 | 120,000 | 1.9 | 2.1 | 3.6 | 3.6 | 0.05 | 0.05 | 0.07 | 0.11 |
| 691X | 85,000 | 100,000 | 2.7 | 2.5 | 3.8 | 4.3 | 0.15 | 0.15 | 0.17 | 0.20 |
| 601X | 75,000 | 90,000 | 2.7 | 3.0 | 4.8 | 5.4 | 0.15 | 0.15 | 0.33 | 0.38 |
| 682 | 85,000 | 100,000 | 2.6 | 2.7 | 4.4 | 4.2 | 0.08 | 0.08 | 0.12 | 0.17 |
| MR52B | 85,000 | 100,000 | 2.8 | 2.7 | 4.2 | 4.4 | 0.10 | 0.10 | 0.16 | 0.23 |
| 692 | 75,000 | 90,000 | 3.2 | 3.0 | 4.8 | 5.4 | 0.15 | 0.15 | 0.28 | 0.38 |
| MR62 | 75,000 | 90,000 | 3.2 | 3.0 | 4.8 | 5.4 | 0.15 | 0.15 | 0.30 | 0.29 |
| MR72 | 63,000 | 75,000 | 3.2 | 3.8 | 5.8 | 6.2 | 0.15 | 0.15 | 0.45 | 0.49 |
| 602 | 63,000 | 75,000 | 3.2 | 3.8 | 5.8 | 6.2 | 0.15 | 0.15 | 0.51 | 0.58 |
| 682X | 71,000 | 80,000 | 3.1 | 3.7 | 5.4 | 5.4 | 0.08 | 0.08 | 0.23 | 0.29 |
| 692X | 63,000 | 75,000 | 3.7 | 3.8 | 5.8 | 6.2 | 0.15 | 0.15 | 0.41 | 0.55 |
| MR82X | 60,000 | 67,000 | 4.1 | - | 6.4 | - | 0.20 | - | 0.56 | - |
| 602X | 60,000 | 71,000 | 3.7 | 4.1 | 6.8 | 7.0 | 0.15 | 0.15 | 0.63 | 0.83 |
| MR63 | 71,000 | 80,000 | 3.8 | 3.7 | 5.2 | 5.4 | 0.10 | 0.10 | 0.20 | 0.27 |
| 683A | 63,000 | 75,000 | 3.8 | 4.0 | 6.2 | 6.4 | 0.10 | 0.10 | 0.32 | 0.45 |
| MR83 | 60,000 | 67,000 | 4.2 | - | 6.8 | - | 0.15 | - | 0.54 | - |
| 693 | 60,000 | 67,000 | 4.2 | 4.3 | 6.8 | 7.3 | 0.15 | 0.15 | 0.61 | 0.83 |
| MR93 | 56,000 | 67,000 | 4.6 | 4.3 | 7.4 | 7.9 | 0.20 | 0.15 | 0.73 | 1.18 |
| 603 | 56,000 | 67,000 | 4.2 | 4.3 | 7.8 | 7.9 | 0.15 | 0.15 | 0.87 | 1.45 |
| 623 | 50,000 | 60,000 | 4.2 | 4.3 | 8.8 | 8.0 | 0.15 | 0.15 | 1.65 | 1.66 |
| 633 | 40,000 | 48,000 | 4.6 | 6.0 | 11.4 | 11.3 | 0.20 | 0.20 | 3.38 | 3.33 |
| MR74 | 60,000 | 67,000 | 4.8 | - | 6.2 | - | 0.10 | - | 0.22 | - |
| MR74 | 60,000 | 71,000 | - | 4.8 | - | 6.3 | - | 0.10 | - | 0.29 |
| MR84 | 56,000 | 67,000 | 5.2 | 5.0 | 6.8 | 7.4 | 0.15 | 0.10 | 0.36 | 0.56 |
| 684A | 53,000 | 63,000 | 4.8 | 5.2 | 8.2 | 8.1 | 0.10 | 0.10 | 0.63 | 1.01 |
| MR104B | 50,000 | 60,000 | 5.6 | 5.9 | 8.4 | 8.8 | 0.20 | 0.15 | 1.04 | 1.42 |
| 694 | 48,000 | 56,000 | 5.2 | 5.6 | 9.8 | 9.9 | 0.15 | 0.15 | 1.70 | 1.75 |
| 604 | 48,000 | 56,000 | 5.6 | 5.6 | 10.4 | 9.9 | 0.20 | 0.20 | 2.25 | 2.29 |
| 624 | 40,000 | 48,000 | 5.6 | 6.0 | 11.4 | 11.3 | 0.20 | 0.20 | 3.03 | 3.04 |
| 634 | 36,000 | 43,000 | 6.0 | 7.5 | 14.0 | 13.8 | 0.30 | 0.30 | 5.24 | 5.21 |
600 type / MR type
Inner diameter 5–9 mm
| Nominal number | Main Dimensions (mm) | Standard rated load | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Open type | Shield Shape | Seal Type | d | D | B | B1 | r (*1) Minimum | r 1(*1) Minimum | (N) | N (kgf) | |||
| Cr | Cor | Cr | Cor | ||||||||||
| MR85 | - | - | - | 5 | 8 | 2 | - | 0.10 | - | 310 | 120 | 31 | 12 |
| - | MR85ZZ | - | - | 5 | 8 | - | 2.5 | - | 0.10 | 278 | 131 | 28 | 13 |
| MR95 | MR95ZZ1 | - | - | 5 | 9 | 2.5 | 3 | 0.15 | 0.15 | 430 | 168 | 44 | 17 |
| MR105 | MR105ZZ | - | - | 5 | 10 | 3 | 4 | 0.15 | 0.15 | 430 | 168 | 44 | 17 |
| - | MR115ZZ | VV | - | 5 | 11 | - | 4 | - | 0.15 | 715 | 276 | 73 | 28 |
| 685 | 685ZZ | - | - | 5 | 11 | 3 | 5 | 0.15 | 0.15 | 715 | 281 | 73 | 29 |
| 695 | 695ZZ1 | VV | DD | 5 | 13 | 4 | 4 | 0.20 | 0.20 | 1080 | 430 | 110 | 44 |
| 605 | 605ZZ | DD | - | 5 | 14 | 5 | 5 | 0.20 | 0.20 | 1330 | 505 | 135 | 52 |
| 625 | 625ZZ1 | VV | DD | 5 | 16 | 5 | 5 | 0.30 | 0.30 | 1730 | 670 | 177 | 68 |
| 635 | 635ZZ1 | VV | DD | 5 | 19 | 6 | 6 | 0.30 | 0.30 | 2340 | 885 | 238 | 90 |
| MR106 | MR106ZZ1 | - | - | 6 | 10 | 2.5 | 3 | 0.15 | 0.10 | 495 | 218 | 51 | 22 |
| MR126 | MR126ZZ | DD | - | 6 | 12 | 3 | 4 | 0.20 | 0.15 | 715 | 292 | 73 | 30 |
| 686A | 686AZZ1 | VV | DD | 6 | 13 | 3.5 | 5 | 0.15 | 0.15 | 1080 | 440 | 110 | 45 |
| 696 | 696ZZ1 | VV | DD | 6 | 15 | 5 | 5 | 0.20 | 0.20 | 1730 | 670 | 177 | 68 |
| 606 | 606ZZ1 | VV | DD | 6 | 17 | 6 | 6 | 0.30 | 0.30 | 2260 | 835 | 231 | 85 |
| 626 | 626ZZ1 | VV | DD | 6 | 19 | 6 | 6 | 0.30 | 0.30 | 2340 | 885 | 238 | 90 |
| 636 | 636ZZ | VV | DD | 6 | 22 | 7 | 7 | 0.30 | 0.30 | 3300 | 1370 | 335 | 140 |
| MR117 | MR117ZZ | - | - | 7 | 11 | 2.5 | 3 | 0.15 | 0.10 | 455 | 201 | 47 | 21 |
| MR137 | MR137ZZ | - | - | 7 | 13 | 3 | 4 | 0.20 | 0.15 | 540 | 276 | 55 | 28 |
| 687 | 687ZZ1 | VV | DD | 7 | 14 | 3.5 | 5 | 0.15 | 0.15 | 1170 | 510 | 120 | 52 |
| 697 | 697ZZ1 | VV | DD | 7 | 17 | 5 | 5 | 0.30 | 0.30 | 1610 | 710 | 164 | 73 |
| 607B | 60713ZZ1 | VV | DD | 7 | 19 | 6 | 6 | 0.30 | 0.30 | 2340 | 885 | 238 | 90 |
| 627 | 627ZZ | VV | DD | 7 | 22 | 7 | 7 | 0.30 | 0.30 | 3300 | 1370 | 335 | 140 |
| 637 | 637ZZ1 | VV | DD | 7 | 26 | 9 | 9 | 0.30 | 0.30 | 4550 | 1970 | 465 | 201 |
| MR128 | MR128ZZ1 | - | - | 8 | 12 | 2.5 | 3.5 | 0.15 | 0.10 | 545 | 274 | 56 | 28 |
| MR148 | MR148ZZ | VV | DD | 8 | 14 | 3.5 | 4 | 0.20 | 0.15 | 820 | 385 | 83 | 39 |
| 688A | 688AZZ1 | VV | DD | 8 | 16 | 4 | 5 | 0.20 | 0.20 | 1610 | 710 | 164 | 73 |
| 698 | 698ZZ1 | VV | DD | 8 | 19 | 6 | 6 | 0.30 | 0.30 | 2240 | 910 | 228 | 93 |
- (^*1) Values in ( ) do not comply with JIS B 1521.
- The reference for the basic dynamic load rating for stainless steel products is multiplied by a factor of 0.85.
| Part Number Open type | Allowable rotational speed (min⁻¹) | Mounting dimensions (mm) | Weight (g) (Reference) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Grease Lubrication Open type Z/ZZ | D·DD | Oil Lubrication Open type z | |||||||||
| da Minimum | db Maximum | Da Maximum | Db Minimum | ra Maximum | rb Maximum | Open type | Shield Shape | ||||
| MR85 | 53000 | - | 63,000 | 5.8 | - | 7.2 | - | 0.10 | - | 0.26 | - |
| MR85 | 53,000 | - | 63,000 | - | 5.8 | - | 7.4 | - | 0.10 | - | 0.34 |
| MR95 | 50,000 | - | 60,000 | 6.2 | 6.0 | 7.8 | 8.2 | 0.15 | 0.15 | 0.50 | 0.58 |
| MR105 | 50,000 | - | 60,000 | 6.2 | 6.0 | 8.8 | 8.4 | 0.15 | 0.15 | 0.95 | 1.29 |
| MR115 | 48,000 | - | 56,000 | - | 6.3 | - | 9.8 | - | 0.15 | - | 1.50 |
| 685 | 45,000 | - | 53,000 | 6.2 | 6.2 | 9.8 | 9.9 | 0.15 | 0.15 | 1.20 | 1.96 |
| 695 | 43,000 | 40,000 | 50,000 | 6.6 | 6.6 | 11.4 | 11.2 | 0.20 | 0.20 | 2.45 | 2.50 |
| 605 | 40,000 | 38,000 | 50,000 | 6.6 | 6.9 | 12.4 | 12.2 | 0.20 | 0.20 | 3.54 | 3.48 |
| 625 | 36,000 | 32,000 | 43,000 | 7.0 | 7.5 | 14.0 | 13.8 | 0.30 | 0.30 | 4.95 | 4.86 |
| 635 | 32,000 | 30,000 | 40,000 | 7.0 | 8.5 | 17.0 | 16.5 | 0.30 | 0.30 | 8.56 | 8.34 |
| MR106 | 45000 | - | 53,000 | 7.2 | 7.0 | 8.8 | 9.3 | 0.15 | 0.10 | 0.56 | 0.68 |
| MR126 | 43,000 | 40,000 | 50,000 | 7.6 | 7.2 | 10.4 | 10.9 | 0.20 | 0.15 | 1.27 | 1.74 |
| 686A | 40,000 | 38,000 | 50,000 | 7.2 | 7.4 | 11.8 | 11.7 | 0.15 | 0.15 | 1.91 | 2.69 |
| 696 | 40,000 | 36,000 | 45,000 | 7.6 | 7.9 | 13.4 | 13.3 | 0.20 | 0.20 | 3.88 | 3.72 |
| 606 | 38,000 | 34,000 | 45,000 | 8.0 | 8.2 | 15.0 | 14.8 | 0.30 | 0.30 | 5.97 | 6.08 |
| 626 | 32,000 | 30,000 | 40,000 | 8.0 | 8.5 | 17.0 | 16.5 | 0.30 | 0.30 | 8.15 | 7.94 |
| 636 | 30000 | 28,000 | 36,000 | 8.0 | 10.5 | 20.0 | 19.0 | 0.30 | 0.30 | 14.00 | 14.00 |
| MR117 | 43,000 | - | 50,000 | 8.2 | 8.0 | 9.8 | 10.5 | 0.15 | 0.10 | 0.62 | 0.72 |
| MR137 | 40,000 | - | 48,000 | 8.6 | 9.0 | 11.4 | 11.6 | 0.20 | 0.15 | 1.58 | 2.02 |
| 687 | 40,000 | 34,000 | 45,000 | 8.2 | 8.5 | 12.8 | 12.7 | 0.15 | 0.15 | 2.13 | 2.97 |
| 697 | 36000 | 28,000 | 43,000 | 9.0 | 10.2 | 15.0 | 14.8 | 0.30 | 0.30 | 5.26 | 5.12 |
| 607 | 36,000 | 32,000 | 43,000 | 9.0 | 9.1 | 17.0 | 16.5 | 0.30 | 0.30 | 7.67 | 7.51 |
| 627 | 30000 | 28,000 | 36,000 | 9.0 | 10.5 | 20.0 | 19.0 | 0.30 | 0.30 | 12.7 | 12.9 |
| 637 | 28,000 | 22,000 | 34,000 | 9.0 | 12.8 | 24.0 | 22.8 | 0.30 | 0.30 | 24.00 | 25.00 |
| MR128 | 40,000 | - | 48,000 | 9.2 | 9.0 | 10.8 | 11.3 | 0.15 | 0.10 | 0.71 | 0.97 |
| MR148 | 38,000 | 32,000 | 45,000 | 9.6 | 9.2 | 12.4 | 12.8 | 0.20 | 0.15 | 1.86 | 2.16 |
| 688A | 36000 | 28,000 | 43,000 | 9.6 | 10.2 | 14.4 | 14.2 | 0.20 | 0.20 | 3.12 | 4.02 |
| 698 | 36,000 | 28,000 | 43,000 | 10.0 | 10.0 | 17.0 | 16.5 | 0.30 | 0.30 | 7.23 | 7.18 |
F600 type / MF type
Inner diameter 1 to 4 mm
| Part number | Main Dimensions (mm) | Standard rated load | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Open type | Shield Shape | Seal Type | d | D | D1 | D2 | B | B1 | C1 | C2 | r (*1) Minimum | r 1(*1) Minimum | (N) | N (kgf) | |||
| Cr | Cor | Cr | Cor | ||||||||||||||
| F681 | - | - | - | 1 | 3 | 3.8 | - | 1.0 | - | 0.3 | - | 0.05 | - | 80 | 23 | 8 | 2.5 |
| F691 | - | - | - | 1 | 4 | 5.0 | - | 1.6 | - | 0.5 | - | 0.10 | - | 138 | 35 | 14 | 3.5 |
| MF41X | - | - | - | 1.2 | 4 | 48.0 | - | 1.8 | - | 04 | - | 01 | - | 138 | 35 | 14 | 35 |
| F681X | F681XZZ | - | - | 1.5 | 4 | 5.0 | 5.0 | 1.2 | 2.0 | 0.4 | 0.6 | 0.05 | 0.05 | 112 | 33 | 11 | 3.5 |
| F691X | F691XZZ | - | - | 1.5 | 5 | 6.5 | 6.5 | 2.0 | 2.6 | 0.6 | 0.8 | 0.15 | 0.15 | 237 | 69 | 24 | 7 |
| F601X | F601XZZ | - | - | 1.5 | 6 | 7.5 | 7.5 | 2.5 | 3.0 | 0.6 | 0.8 | 0.15 | 0.15 | 330 | 98 | 34 | 10 |
| F682 | F682ZZ | - | - | 2 | 5 | 6.1 | 6.1 | 1.5 | 2.3 | 0.5 | 0.6 | 0.08 | 0.08 | 169 | 50 | 17 | 5 |
| MF52B | MF52BZZ | - | - | 2 | 5 | 6.2 | 6.2 | 2.0 | 2.5 | 0.6 | 0.6 | 0.10 | 0.10 | 187 | 58 | 19 | 6 |
| F692 | F692ZZ | - | - | 2 | 6 | 75.0 | 75.0 | 2.3 | 3.0 | 06 | 08 | 015 | 015 | 330 | 98 | 34 | 10 |
| MF62 | - | - | - | 2 | 6 | 7.2 | - | 2.5 | - | 0.6 | - | 0.15 | - | 330 | 98 | 34 | 10 |
| MF72 | MF72ZZ | - | - | 2 | 7 | 8.2 | 8.2 | 2.5 | 3.0 | 0.6 | 0.6 | 0.15 | 0.15 | 385 | 127 | 39 | 13 |
| F602 | F602ZZ | - | - | 2 | 7 | 8.5 | 8.5 | 2.8 | 3.5 | 0.7 | 0.9 | 0.15 | 0.15 | 385 | 127 | 39 | 13 |
| F682X | F682XZZ | - | - | 2.5 | 6 | 7.1 | 7.1 | 1.8 | 2.6 | 0.5 | 0.8 | 0.08 | 0.08 | 208 | 74 | 21 | 7.5 |
| F692X | F692XZZ | - | - | 2.5 | 7 | 8.5 | 8.5 | 2.5 | 3.5 | 0.7 | 0.9 | 0.15 | 0.15 | 385 | 127 | 39 | 13 |
| MF82X | - | - | - | 2.5 | 8 | 92.0 | - | 2.5 | - | 06 | - | 02 | - | 560 | 179 | 57 | 18 |
| F602X | F602XZZ | - | - | 2.5 | 8 | 9.5 | 9.5 | 2.8 | 4.0 | 0.7 | 0.9 | 0.15 | 0.15 | 550 | 175 | 56 | 18 |
| MF63 | MF63ZZ | - | - | 3 | 6 | 7.2 | 7.2 | 2.0 | 2.5 | 0.6 | 0.6 | 0.10 | 0.10 | 208 | 74 | 21 | 7.5 |
| F683A | F683AZZ | - | - | 3 | 7 | 8.1 | 8.1 | 2.0 | 3.0 | 0.5 | 0.8 | 0.10 | 0.10 | 390 | 130 | 40 | 13 |
| MF83 | - | - | - | 3 | 8 | 9.2 | - | 2.5 | - | 0.6 | - | 0.15 | - | 560 | 179 | 57 | 18 |
| F693 | F693ZZ | - | - | 3 | 8 | 9.5 | 9.5 | 3.0 | 4.0 | 0.7 | 0.9 | 0.15 | 0.15 | 560 | 179 | 57 | 18 |
| MF93 | MF93ZZ | - | - | 3 | , | 10.2 | 10.6 | 2.5 | 4.0 | 0.6 | 0.8 | 0.20 | 0.15 | 570 | 187 | 58 | 19 |
| F603 | F603ZZ | - | - | 3 | , | 10.5 | 10.5 | 3.0 | 5.0 | 0.7 | 1.0 | 0.15 | 0.15 | 570 | 187 | 58 | 19 |
| F623 | F623ZZ | - | - | 3 | 10 | 11.5 | 11.5 | 4.0 | 4.0 | 1.0 | 1.0 | 0.15 | 0.15 | 630 | 218 | 64 | 22 |
| MF74 | - | - | - | 4 | 7 | 8.2 | - | 2.0 | - | 0.6 | - | 0.10 | - | 310 | 115 | 32 | 12 |
| - | MF74ZZ | - | - | 4 | 7 | - | 8.2 | - | 2.5 | - | 0.6 | - | 0.10 | 255 | 107 | 26 | 11 |
| MF84 | MF84ZZ | - | - | 4 | 8 | 9.2 | 9.2 | 2.0 | 3.0 | 0.6 | 0.6 | 0.15 | 0.10 | 395 | 139 | 40 | 14 |
| F684 | F684ZZ | - | - | 4 | , | 10.3 | 10.3 | 2.5 | 4.0 | 0.6 | 1.0 | (0.15) (*1) | (0.15) (*1) | 640 | 225 | 65 | 23 |
| MF104B | MF104BZZ | - | - | 4 | 10 | 11.2 | 11.6 | 3.0 | 4.0 | 0.6 | 0.8 | 0.20 | 0.15 | 710 | 270 | 73 | 28 |
| F694 | F694ZZ | - | - | 4 | 11 | 12.5 | 12.5 | 4.0 | 4.0 | 1.0 | 1.0 | 0.15 | 0.15 | 960 | 345 | 98 | 35 |
| F604 | F604ZZ | - | - | 4 | 12 | 135.0 | 13.5 | 4.0 | 4.0 | 1.0 | 1.0 | 0.20 | 0.20 | 960 | 345 | 98 | 35 |
| F624 | F624ZZ1 | - | - | 4 | 13 | 15.0 | 15.0 | 5.0 | 5.0 | 1.0 | 1.0 | 0.20 | 0.20 | 1300 | 485 | 133 | 49 |
| F634 | F634ZZ1 | - | - | 4 | 16 | 18.0 | 18.0 | 5.0 | 5.0 | 1.0 | 1.0 | 0.30 | 0.30 | 1730 | 670 | 177 | 68 |
- (^*1) Values in ( ) do not comply with JIS B 1521.
- The reference for the basic dynamic load rating for stainless steel products is multiplied by a factor of 0.85.
| Part number Open type | Allowable rotational speed (min⁻¹) | Mounting dimensions (mm) | Weight (g) (Reference) | |||||
|---|---|---|---|---|---|---|---|---|
| grease lubrication open type Z/ZZ | Oil Lubrication Open Type z | da Minimum | db Maximum | ra Maximum | rb Maximum | Open type | Shield Shape | |
| F681 | 130,000 | 150,000 | 1.4 | - | 0.05 | - | 0.04 | - |
| F691 | 100,000 | 120,000 | 1.8 | - | 0.10 | - | 0.14 | - |
| MF41X | 110,000 | 130,000 | 2.0 | - | 0.10 | - | 0.12 | - |
| F681X | 100,000 | 120000 | 1.9 | 2.1 | 0.05 | 0.05 | 0.09 | 0.14 |
| F691X | 85,000 | 100,000 | 2.7 | 2.5 | 0.15 | 0.15 | 0.21 | 0.28 |
| F601X | 75,000 | 90,000 | 2.7 | 3.0 | 0.15 | 0.15 | 0.42 | 0.52 |
| F682 | 85,000 | 100,000 | 2.6 | 2.7 | 0.08 | 0.08 | 0.16 | 0.22 |
| MF52B | 85,000 | 100,000 | 2.8 | 2.7 | 0.10 | 0.10 | 0.21 | 0.27 |
| F692 | 75,000 | 90,000 | 3.2 | 3.0 | 0.15 | 0.15 | 0.35 | 0.48 |
| MF62 | 75,000 | 90,000 | 3.2 | - | 0.15 | - | 0.36 | - |
| MF72 | 63000 | 75000 | 3.2 | 3.8 | 0.15 | 0.15 | 0.52 | 0.56 |
| F602 | 63000 | 75000 | 3.2 | 3.8 | 0.15 | 0.15 | 0.60 | 0.71 |
| F682X | 71,000 | 80,000 | 3.1 | 3.7 | 0.08 | 0.08 | 0.25 | 0.36 |
| F692X | 63,000 | 67,000 | 3.7 | 3.8 | 0.15 | 0.15 | 0.51 | 0.68 |
| MF82X | 60,000 | 71,000 | 4.1 | - | 0.20 | - | 0.62 | - |
| F602X | 60,000 | 71,000 | 3.7 | 4.1 | 0.15 | 0.15 | 0.74 | 0.98 |
| MF63 | 71000 | 80000 | 3.8 | 3.7 | 0.10 | 0.10 | 0.27 | 0.33 |
| F683A | 63000 | 75,000 | 3.8 | 4.0 | 0.10 | 0.10 | 0.37 | 0.53 |
| MF83 | 60,000 | 67,000 | 4.2 | - | 0.15 | - | 0.56 | - |
| F693 | 60,000 | 67,000 | 4.2 | 4.3 | 0.15 | 0.15 | 0.70 | 0.97 |
| MF93 | 56000 | 67,000 | 4.6 | 4.3 | 0.20 | 0.15 | 0.81 | 1.34 |
| F603 | 56,000 | 67,000 | 4.2 | 4.3 | 0.15 | 0.15 | 1.00 | 1.63 |
| F623 | 50,000 | 60000 | 4.2 | 4.3 | 0.15 | 0.15 | 1.85 | 1.86 |
| MF74 | 60,000 | 67,000 | 4.8 | - | 0.10 | - | 0.29 | - |
| MF74 | 60,000 | 71,000 | - | 4.8 | - | 0.10 | - | 0.35 |
| MF84 | 56,000 | 67,000 | 5.2 | 5.0 | 0.15 | 0.10 | 0.44 | 0.63 |
| F684 | 53,000 | 63,000 | 4.8 | 5.2 | 0.10 | 0.10 | 0.70 | 1.14 |
| MF104B | 50,000 | 60,000 | 5.6 | 5.9 | 0.20 | 0.15 | 1.13 | 1.59 |
| F694 | 48,000 | 56,000 | 5.2 | 5.6 | 0.15 | 0.15 | 1.91 | 1.96 |
| F604 | 48,000 | 56,000 | 5.6 | 5.6 | 0.20 | 0.20 | 2.53 | 2.53 |
| F624 | 40,000 | 48,000 | 5.6 | 6 | 0.20 | 0.20 | 3.38 | 3.53 |
| F634 | 36,000 | 43,000 | 6 | 7.5 | 0.30 | 0.30 | 5.73 | 5.65 |
F600 type / MF type
Inner diameter 5 to 9 mm
| Part number | Main Dimensions (mm) | Standard rated load | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Open type | Shield Shape | Seal Type | d | D | D1 | D2 | B | B1 | C1 | C2 | r (*1) Minimum | r 1(*1 Min. | (N) | N (kgf) | |||
| Cr | Cor | Cr | Cor | ||||||||||||||
| MF85 | - | - | - | 5 | 8 | 9.2 | - | 2.0 | - | 0.6 | - | 0.10 | - | 310 | 120 | 31 | 12 |
| - | MF85ZZ | - | - | 5 | 8 | - | 9.2 | - | 2.5 | - | 0.6 | - | 0.10 | 278 | 131 | 28 | 13 |
| MF95 | MF95ZZ | - | - | 5 | 9 | 102.0 | 102.0 | 2.5 | 3.0 | 06 | 06 | 015 | 0.15 | 430 | 168 | 44 | 17 |
| MF105 | MF105ZZ | - | - | 5 | 10 | 11.2 | 11.6 | 3.0 | 4.0 | 0.6 | 0.8 | 0.15 | 0.15 | 430 | 168 | 44 | 17 |
| F685 | F685ZZ | - | - | 5 | 11 | 12.5 | 12.5 | 3.0 | 5.0 | 0.8 | 1.0 | 0.15 | 0.15 | 715 | 281 | 73 | 29 |
| F695 | F695ZZ1 | VV | DD | 5 | 13 | 15.0 | 15.0 | 4.0 | 4.0 | 1.0 | 1.0 | 0.20 | 0.20 | 1080 | 430 | 110 | 44 |
| F605 | F605ZZ | DD | DD | 5 | 14 | 16.0 | 16.0 | 5.0 | 5.0 | 1.0 | 1.0 | 0.20 | 0.20 | 1330 | 505 | 135 | 52 |
| F625 | F625ZZ1 | VV | DD | 5 | 16 | 18.0 | 18.0 | 5.0 | 5.0 | 1.0 | 1.0 | 0.30 | 0.30 | 1730 | 670 | 177 | 68 |
| F635 | F635ZZ1 | VV | DD | 5 | 19 | 22.0 | 22.0 | 6.0 | 6.0 | 15.0 | 15.0 | 030 | 0.30 | 2340 | 885 | 238 | 90 |
| MF106 | MF106ZZ1 | - | - | 6 | 10 | 11.2 | 11.2 | 2.5 | 3.0 | 0.6 | 0.6 | 0.15 | 0.10 | 495 | 218 | 51 | 22 |
| MF126 | MF126ZZ | DD | DD | 6 | 12 | 13.2 | 13.6 | 3.0 | 4.0 | 0.6 | 0.8 | 0.20 | 0.15 | 715 | 292 | 73 | 30 |
| F686A | F686AZZ1 | VV | DD | 6 | 13 | 15.0 | 15.0 | 3.5 | 5.0 | 1.0 | 1.1 | 0.15 | 0.15 | 1080 | 440 | 110 | 45 |
| F696 | F696ZZ1 | VV | DD | 6 | 15 | 17.0 | 17.0 | 5.0 | 5.0 | 1.2 | 1.2 | 0.20 | 0.20 | 1730 | 670 | 177 | 68 |
| F606 | F606ZZ | VV | DD | 6 | 17 | 19.0 | 19.0 | 6.0 | 6.0 | 1.2 | 1.2 | 0.30 | 0.30 | 2260 | 835 | 231 | 85 |
| F626 | F626ZZ1 | VV | DD | 6 | 19 | 22.0 | 22.0 | 6.0 | 6.0 | 15.0 | 15.0 | 030 | 0.30 | 2340 | 885 | 238 | 90 |
| F636 | F636ZZ | VV | DD | 6 | 22 | 25.0 | 25.0 | 7.0 | 7.0 | 1.5 | 1.5 | 0.30 | 0.30 | 3300 | 1370 | 335 | 140 |
| MF117 | MF117ZZ | - | - | 7 | 11 | 12.2 | 12.2 | 2.5 | 3.0 | 0.6 | 0.6 | 0.15 | 0.10 | 455 | 201 | 47 | 21 |
| MF137 | MF137ZZ | - | - | 7 | 13 | 14.2 | 14.6 | 3.0 | 4.0 | 0.6 | 0.8 | 0.20 | 0.15 | 540 | 276 | 55 | 28 |
| F687 | F687ZZ1 | VV | DD | 7 | 14 | 16.0 | 16.0 | 3.5 | 5.0 | 1.0 | 1.1 | 0.15 | 0.15 | 1170 | 510 | 120 | 52 |
| F697 | F697ZZ1 | VV | DD | 7 | 17 | 19.0 | 19.0 | 5.0 | 5.0 | 1.2 | 1.2 | 0.30 | 0.30 | 1610 | 710 | 164 | 73 |
| F607 | F607ZZ1 | VV | DD | 7 | 19 | 22.0 | 22.0 | 6.0 | 6.0 | 1.5 | 1.5 | 0.30 | 0.30 | 2340 | 885 | 238 | 90 |
| F627 | F627ZZ | VV | DD | 7 | 22 | 25.0 | 25.0 | 7.0 | 7.0 | 1.5 | 1.5 | 0.30 | 0.30 | 3300 | 1370 | 335 | 140 |
| MF128 | MF128ZZ1 | - | - | 8 | 12 | 13.2 | 13.6 | 2.5 | 3.5 | 0.6 | 0.8 | 0.15 | 0.10 | 545 | 274 | 56 | 28 |
| MF148 | MF148ZZ | VV | DD | 8 | 14 | 15.6 | 15.6 | 3.5 | 4.0 | 0.8 | 0.8 | 0.20 | 0.15 | 820 | 385 | 83 | 39 |
| F688A | F688AZZ1 | VV | DD | 8 | 16 | 18.0 | 18.0 | 4.0 | 5.0 | 1.0 | 1.1 | 0.20 | 0.20 | 1610 | 710 | 164 | 73 |
| F698 | F698ZZ1 | VV | DD | 8 | 19 | 22.0 | 22.0 | 6.0 | 6.0 | 1.5 | 1.5 | 0.30 | 0.30 | 2240 | 910 | 228 | 93 |
- (^*1) Values in ( ) do not comply with JIS B 1521.
- The reference for the basic dynamic load rating for stainless steel products is multiplied by a factor of 0.85.
| Part number Open type | Allowable rotational speed (min⁻¹) | Mounting dimensions (mm) | Weight (g) (Reference) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Grease Lubrication Open type Z/ZZ | D·DD | Oil Lubrication Open Type z | |||||||
| da Minimum | db Maximum | ra Maximum | rb Maximum | Open type | Shield Shape | ||||
| MF85 | 53,000 | - | 63,000 | 5.8 | - | 0.10 | - | 0.33 | - |
| MF85 | 53,000 | - | 63,000 | - | 5.8 | - | 0.10 | 0.41 | 0.41 |
| MF95 | 50,000 | - | 60,000 | 6.2 | 6.0 | 0.15 | 0.15 | 0.59 | 0.66 |
| MF105 | 50,000 | - | 60,000 | 6.2 | 6.0 | 0.15 | 0.15 | 1.05 | 1.46 |
| F685 | 45,000 | - | 53,000 | 6.2 | 6.2 | 0.15 | 0.15 | 1.37 | 2.18 |
| F695 | 43,000 | 40,000 | 50,000 | 6.6 | 6.6 | 0.20 | 0.20 | 2.79 | 2.84 |
| F605 | 40,000 | 38,000 | 50,000 | 6.6 | 6.9 | 0.20 | 0.20 | 3.90 | 3.85 |
| F625 | 36,000 | 32,000 | 43,000 | 7.0 | 7.5 | 0.30 | 0.30 | 5.37 | 5.30 |
| F635 | 32,000 | 30,000 | 40,000 | 7.0 | 8.5 | 0.30 | 0.30 | 9.49 | 9.49 |
| MF106 | 45,000 | - | 53,000 | 7.2 | 7.0 | 0.15 | 0.10 | 0.65 | 0.77 |
| MF126 | 43,000 | 40,000 | 50,000 | 7.6 | 7.2 | 0.20 | 0.15 | 1.38 | 1.94 |
| F686A | 40,000 | 38,000 | 50,000 | 7.2 | 7.4 | 0.15 | 0.15 | 2.25 | 3.04 |
| F696 | 40,000 | 36,000 | 45,000 | 7.6 | 7.9 | 0.20 | 0.20 | 4.34 | 4.26 |
| F606 | 38,000 | 34,000 | 45,000 | 8.0 | 8.2 | 0.30 | 0.30 | 6.58 | 6.61 |
| F626 | 32,000 | 30,000 | 40,000 | 8.0 | 8.5 | 0.30 | 0.30 | 9.09 | 9.09 |
| F636 | 30,000 | 28,000 | 36,000 | 8.0 | 10.5 | 0.30 | 0.30 | 14.6 | 4.70 |
| MF117 | 43,000 | - | 50,000 | 8.2 | 8.0 | 0.15 | 0.10 | 0.72 | 0.82 |
| MF137 | 40000 | - | 48,000 | 8.6 | 9.0 | 0.20 | 0.15 | 1.70 | 2.23 |
| F687 | 40,000 | 34,000 | 45,000 | 8.2 | 8.5 | 0.15 | 0.15 | 2.48 | 3.37 |
| F697 | 36,000 | 28,000 | 43,000 | 9.0 | 10.2 | 0.30 | 0.30 | 5.65 | 5.65 |
| F607 | 36,000 | 32,000 | 43,000 | 9.0 | 9.1 | 0.30 | 0.30 | 8.66 | 8.66 |
| F627 | 30,000 | 28,000 | 36,000 | 9.0 | 10.5 | 0.30 | 0.30 | 14.2 | 4.20 |
| MF128 | 40,000 | - | 48,000 | 9.2 | 9.0 | 0.15 | 0.10 | 0.82 | 1.15 |
| MF148 | 38,000 | 32,000 | 45,000 | 9.6 | 9.2 | 0.20 | 0.15 | 2.09 | 2.39 |
| F688A | 36,000 | 30,000 | 43,000 | 9.6 | 10.2 | 0.20 | 0.20 | 3.54 | 4.47 |
| F698 | 36,000 | 28,000 | 43,000 | 10.0 | 10.0 | 0.30 | 0.30 | 8.35 | 8.30 |
SMT type
Inner diameter 10 to 15 mm
| Part number | Main Dimensions (mm) | Standard rated load | ||||||
|---|---|---|---|---|---|---|---|---|
| d | D | B | r (*1) Minimum | (N) | N (kgf) | |||
| Cr | Cor | Cr | Cor | |||||
| SMT1510 | 10 | 15 | 3 | 0.15 | 815 | 410 | 83 | 42 |
| SMT2015 | 15 | 20 | 3.5 | 0.15 | 800 | 470 | 82 | 48 |
| Part number | Allowable rotational speed (min⁻¹) | Mounting dimensions (mm) | Weight (g) (Reference) | |||
|---|---|---|---|---|---|---|
| Grease Lubrication Open type Z/ZZ | Oil Lubrication Open Type z | |||||
| da Minimum | db Maximum | ra Maximum | ||||
| SMT1510 | 36,000 | 43,000 | 11.2 | 13.8 | 0.15 | 1.40 |
| SMT2015 | 30,000 | 36,000 | 16.2 | 18.8 | 0.15 | 2.20 |
- The standard material for thin-walled short-row deep groove ball bearings is stainless steel.
- The applicable accuracy grades are JIS 0 and 6.
- JIS is applied for the radial clearance.
High-quality small-diameter bearings
Dimensional range of small-diameter bearings
| Category Design | Small-Diameter Bearing Extra small ball bearings |
|---|---|
| Metric System Metric | Nominal bearing outer diameter D ≥ 9 Outside diameter D ≥ 9 Nominal bearing inner diameter d < 10 Bare diameter d < 10 |
| Inch Series Inch | Nominal bearing outer diameter D ≥ 9.525 Outside diameter D ≥ 9.525 Nominal bearing inner diameter d < 10 Bare diameter d < 10 |
Usage Example
Preload
A preload is a state in which 2 bearings capable of receiving an axial load are installed in a pair so that a load F (preload) in the axial direction is always applied in advance. Bearings have an internal clearance, but this clearance disappears when preload is applied, allowing the balls and races to come into elastic contact. As a result, the bearing does not rattle due to the clearance, and vibration and noise during rotation can be suppressed. It also increases the rigidity of the bearing.
* If the preload is too large, it will cause an increase in the frictional moment, heat generation, seizure, etc., so it is necessary to appropriately select the amount and method of preload according to the application.
Effect of preload
Example of preload effect
- 1. Accurate positioning of the shaft in the radial and axial directions and suppresses shaft runout.
- 2. Increase the rigidity of the bearing.
- 3. Prevents noise caused by axial vibration and resonance.
- 4. Suppresses ball revolution slip and rotation slip during high-speed rotation.
- 5. In thrust bearings, the rolling elements are kept in the correct position with respect to the bearing rings.
Preload method
Example of constant pressure preload
A method of applying an appropriate preload to the bearing using a coil spring, disc spring, etc. Even if the relative position of the bearing changes during use, the amount of preload can be kept almost constant. For example, it is less susceptible to dimensional changes, etc., due to temperature. However, it requires space and parts for mounting the spring element. Rigidity is low compared to fixed position preload.
Fixed position preload
Example of fixed position preload
A method of setting the amount of preload by determining the position between the facing bearings. For example, based on the relationship between axial load and axial displacement, the displacement corresponding to the axial load is set according to the spacer dimensions and bearing width dimensions, and the bearing is fixed. The rigidity is high. However, the amount of preload changes due to dimensional changes against the temperature.
Preload magnitude and direction
Back-to-back arrangement (DB) example
Example of face-to-face arrangement (DF)
Since the amount of preload determines the state of elastic contact between the balls and raceway, if the amount of preload is increased more than necessary, abnormal heat generation, increased frictional moment, and reduced fatigue lifespan will result. On the other hand, if it is too small, it may cause vibration due to lack of rigidity or loss of preload due to external load. Based on their experience, the manufacturer recommends using about 0.5% of Cr for compact motors and other applications that require long-term durability, and about 1% of Cr for general applications that require rigidity, such as machine parts. In addition to preload, it should be determined by taking into consideration the effects of external loads, self-weight, etc.
There are 2 types of preload directions: back-to-back (DB) and face-to-face (DF). The back-to-back arrangement has high rigidity when a moment load is applied. However, if the housing accuracy is poor and there is mounting error (misalignment), the internal load tends to increase. The face-to-face arrangement has relatively low rigidity against moment loads, but is less susceptible to misalignment such as housing accuracy and shaft deflection.
■ Dimensional tolerance (Class 0)
| d (mm) | Inner diameter tolerance (mm) | |
|---|---|---|
| Over | or less | |
| 0.6 | 2.5 | 0 -0.008 |
| 2.5 | 10 | 0 -0.008 |
| 10 | 18 | 0 -0.008 |
| 18 | 30 | 0 -0.010 |
| D (mm) | Outer diameter tolerance (mm) | |
|---|---|---|
| Over | or less | |
| 2.5 | 6 | 0 -0.008 |
| 6 | 18 | 0 -0.008 |
| 18 | 30 | 0 -0.009 |
| 30 | 50 | 0 -0.011 |
| d (mm) | B Width tolerance C Flange width tolerance (mm) | |
|---|---|---|
| Over | or less | |
| 0.6 | 2.5 | 0 -0.040 |
| 2.5 | 10 | 0 -0.120 |
| 10 | 18 | 0 -0.120 |
| 18 | 30 | 0 -0.120 |
| D1 (mm) | Flange outer diameter tolerance (mm) | |
|---|---|---|
| Over | or less | |
| 6 | 10 | 0.220 -0.036 |
| 10 | 18 | 0.270 -0.043 |
| 18 | 30 | 0.330 -0.052 |
| 30 | 50 | 0.390 -0.062 |
■General standard for fitting (Overview)
| Radial bearing (Class 0, 6X, 6) | MISUMI Product | ||||
|---|---|---|---|---|---|
| Conditions | Ball bearing | Shaft tolerance zone class | |||
| Shaft diameter (mm) | |||||
| Load characteristics | Load size, etc. | Over | or less | ||
| Inner ring Rotational load Direction Variable load | Light load Fluctuating dynamic load | — | 18 | h5 | Shaft |
| 18 | 100 | js6 | — | ||
| 100 | 200 | k6 | — | ||
| Normal load | — | 18 | js5 | — | |
| 18 | 100 | k5 | — | ||
| 100 | 140 | m5 | — | ||
| Inner ring Static Load | Inner ring must be able to move easily on shaft | Overall shaft diameter | g6 | shaft rotary shaft | |
| Inner ring does not need to move easily on shaft | Overall shaft diameter | h6 | — | ||
| Radial bearing (Class 0, 6X, 6) | ||||
|---|---|---|---|---|
| Conditions | Housing tolerance zone class | Housing | ||
| Load characteristics | Load size, etc. | Outer ring axial movement | ||
| Outer ring Static Load | Each load (light, medium, heavy) | easy to move | H7 | Integrated double split |
| The shaft and inner ring become hot | easy to move | G7 | ||
| Requires precision rotation with light and normal loads | Usually unable to move | K6 | Integrated | |
| Capable to move | JS6 | |||
| requires quiet operation | easy to move | H6 | ||
| Direction Variable load | light load, normal load | Usually capable to move | JS7 | |
| Normal load, heavy load | Usually unable to move | K7 | ||
| large impact load | Unable to move | M7 | ||
| Outer ring Rotational load | Light load, dynamic load | Unable to move | M7 | |
| Normal load, heavy load | Unable to move | N7 | ||
| Heavy load with thin-walled housing | Unable to move | P7 | ||
·Inner ring rotational load: The load position on the inner ring changes.
·Inner ring static load: The load position on the inner ring does not change.
·Outer ring rotational load: The load position on the outer ring changes.
·Stationary load on outer ring: The load position on the outer ring does not change.
·Directionally variable load: Load position is variable.
·Light load: 6% or less of the basic dynamic rated load.
·Normal load: Exceeding 6% of the basic dynamic rated load and up to 12%.
·Heavy load: Exceeds 12% of basic dynamic rated load.