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No.000183 Removable Turntable
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Bottom view of removable turntable.
Relevant category
Urethane Molded Bearings
| Product name | Silicon Rubber Mold Bearings - Crown, with Threaded Shaft |
|---|---|
| Part number | UMSWRT5-16 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Support rotary motion without scratching the rotating surface
Available sizes
■Urethane molded bearings, Crown type with long thread, shape A
| Tire Section | Bearing | Shaft | |||
|---|---|---|---|---|---|
| Material | Hardness | Color | Material | Surface Treatment | |
| Urethane | Shore A90 | Black | 52100 Bearing Steel | Carbon Steel | Electroless Nickel Plating |
| White | 52100 Bearing Steel | Carbon Steel | Trivalent Chromate | ||
| 440C Stainless Steel | 303 Stainless Steel | − | |||
| Silicon Rubber | Shore A70 | Light Gray | 52100 Bearing Steel | Carbon Steel | Electroless Nickel Plating |
| 440C Stainless Steel | 303 Stainless Steel | − | |||
| Anti-static Urethane | Shore A90 | Gray | 52100 Bearing Steel | Carbon Steel | Electroless nickel plating |
■Sizes and Dimensions
| O.D. | Bearing | Screw Dia. (Coarse) | Thread Length | Roller Width | Circumference R |
|---|---|---|---|---|---|
| φ12 | W683ZZA | M3 | 6 | 3 | 5 |
| φ13 | W684AX50ZZ | M4 | 8 | 4 | |
| φ16 | 624ZZ | 5 | |||
| WBC5－13ZZ | |||||
| φ20 | 625ZZ | ||||
| 696ZZ | M6 | 12 | |||
| φ28 | 626ZZ | 6 | |||
| 608ZZ | 7 |
Performance info.
■Allowable load of the urethane molded bearings, Crown type
| O.D. | Bearing | Allowable Load N | ||
|---|---|---|---|---|
| Urethane | Silicon | |||
| Shore A90 | Shore A70 | Shore A70 | ||
| φ12 | W683ZZA | 34 | 10 | 9.8 |
| φ13 | W684AX50ZZ | 44 | 13 | 13 |
| φ16 | 624ZZ | 59 | 16 | 18 |
| WBC5－13ZZ | 16 | |||
| φ20 | 625ZZ | 78 | 20 | 24 |
| 696ZZ | 23 | |||
| φ28 | 626ZZ | 157 | 44 | 47 |
| 608ZZ | 176 | 42 | ||
Stripper Bolt
| Product name | Shoulder Bolts - Tolerance e9 |
|---|---|
| Part number | SMSB6.5-15 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Suitable for supporting rotary motion
Available sizes
■Shoulder bolts - Shaft Dia. Tolerance e9
| Material | Hardness | Strength Class |
|---|---|---|
| 4137 Alloy Steel | 33～38HRC | 10.9 |
| 304 Stainless Steel | − | A2−50 |
■Sizes and Dimensions
| Material | Under head DIA. | Shaft length under head | Head | Thread | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 110 | 120 | 130 | 140 | 150 | O.D. | Height | Thread Dia. × Pitch | Length | ||
| 4137 Alloy Steel | φ4 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ6.5 | 3 | M2.5×0.45 | 5 | ||||||||||||||||
| φ4.5 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ7 | M3×0.5 | 6 | |||||||||||||||||
| φ5 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ8 | 3.5 | ||||||||||||||||||
| φ5.5 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ9 | 4 | M4×0.7 | 7 | |||||||||||||||
| φ6 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ||||||||||||||||
| φ6.5 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ10 | 5 | M5×0.8 | 9 | ||||||||||
| φ8 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ13 | 6 | M6×1.0 | |||||
| φ10 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ16 | 8 | M8×1.25 | 12 | ||||
| φ12 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ17 | |||||||||
| φ13 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ18 | 10 | M10×1.5 | 16 | |||
| φ16 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ24 | 14 | M12×1.75 | 18 | ||
| φ20 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ27 | 18 | M16×2.0 | 24 | |||||||||||||
| 304 Stainless Steel | φ4 | ○ | ○ | ○ | ○ | ○ | ○ | φ6.5 | 3 | M2.5×0.45 | 5 | ||||||||||||||||||
| φ4.5 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ7 | M3×0.5 | 6 | |||||||||||||||||||
| φ5 | ○ | ○ | ○ | ○ | ○ | ○ | φ8 | 3.5 | |||||||||||||||||||||
| φ5.5 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ9 | 4 | M4×0.7 | 7 | ||||||||||||||||||
| φ6 | ○ | ○ | ○ | ○ | ○ | ○ | |||||||||||||||||||||||
| φ6.5 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ10 | 5 | M5×0.8 | 9 | ||||||||||||||||
| φ8 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ13 | 6 | M6×1.0 | |||||||||||
| φ10 | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | φ16 | 8 | M8×1.25 | 12 | ||||||||
Accuracy Info
■Accuracy of shoulder bolts -Shaft dia. Tolerance e9
| Shaft Dia. | |
|---|---|
| Tolerance of O.D. Dimension | |
| φ4 | −0.020/−0.050 |
| φ4.5 | |
| φ5 | |
| φ5.5 | |
| φ6 | |
| φ6.5 | -0.025/-0.061 |
| φ8 | |
| φ10 | |
| φ12 | -0.032/-0.075 |
| φ13 | |
| φ16 | |
| φ20 | -0.040/-0.92 |
Shaft length tolerance: ±0.1mm
L sheet metal
| Product name | Sheet Metal Mounting Plates / Brackets (for Sensors / for Motors / for Cylinders) -Angle Type- |
|---|---|
| Part number | FALBS-SUD-T2.0-A22-B20-L20-X10-H16-N4-Y5-V10-S12-NA4 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Suitable for customized bracket support.
Available sizes
■L Sheet Metal Brackets (Dimension Configurable Type, 1 Hole x 2 Holes)
| Material | Surface Treatment | Plate Thickness |
|---|---|---|
| Low Carbon Steel | － | 1.6、2.3、3.2 |
| Black Oxide | ||
| Trivalent Chromate (Clear) | ||
| Trivalent Chromate(Black) | ||
| Hot Rolled Steel | － | 4.5、6.0 |
| Black Oxide | ||
| Trivalent Chromate (Clear) | ||
| Trivalent Chromate(Black) | ||
| 5052 Aluminum Alloy | － | 1.5、2.0、3.0、4.0、5.0 |
| Anodize (Clear) | ||
| Anodize (Black) | ||
| 304 Stainless Steel (2B) | － | 1.0、1.5、2.0、3.0、4.0、5.0 |
■External Dimensions
| Plate Thickness | Hole Dia. | [A]Overall height | [B]Depth | [L]Overall width |
|---|---|---|---|---|
| （1 mm increments） | ||||
| 1.0～5.0 | φ3、4、5、6、8、10 | 22～200 | 22～200 | 26～200 |
| 6.0 | 22～300 | |||
* Hole positions configurable. Please see the product pages for details.
IDEA NOTE Locking the turntable
The bolt to lock the turntable into position is one in the center. To prevent loss of the center bolt, the bolt is designed not to be removed from the turntable.
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Application Overview
Purpose
- Purpose
- Used for product inspection/repair.
- Operation
- Product inspection and repair are conducted on a workbench. If the turntable is not needed, it is removable by loosening center turntable bolt. When re-installing, use the two center locating pins to position the table and tightening the center bolt.
Points for use
- The turntable is rotated manually.
Target workpiece
- Shape: Block
- Size: W 430 x D 250 x H 70 mm
- Weight: 6 kg
Design Specifications
Operating Conditions or Design Requirements
- Turntable O.D.: φ350mm
- External size (workbench): W 700 x D 600 x H 170 mm
Selection Criteria for Main Components
- Select size for urethane molded bearings to support motions and to prevent deflection of the turntable.
Design Evaluation
Verification of main components
- Verify bearing durability or life span based on load rating.
- Calculate life span of the bearing
- Life span for bearings (106 rotations): L = (Cr/Pr)³ , where
Cr=7250N - Basic Dynamic load rating for B6906ZZ (from catalog)
Pr- Radial Dynamic Equivalent load (need to calculate based on application loads) - Other conditionals values:
Workpiece weight: M = 6 kg
Gravitational acceleration: g = 9.8 m/s²
Gravity by the workpiece: W = M x g = 6 x 9.8 = 59 N
Manual force used to move turntable: Assume to be Q = 200 N - Radial Dynamic Equivalent load
Pr =X×Fr + Y×Fa, where Fr-radial load, Fa-thrust load and X=1 and Y=2.3 are radial and thrust factor (values from catalog) - Assume that force acting on the bearing, Po = M + Q, acts only in the z-axis direction (thrust load), and let radial load Fr=0N, then we obtain the following:
Thrust load: Fa=Po=M+Q=259N、then
Pr=1×Fr+2.3×(M+Q)=1×0+2.3×259=596N - Bearing rated life L = (Cr/Pr)³ = (7250/596)³ = 1800 (10? rotations), has sufficient margin for our application.
- Life span for bearings (106 rotations): L = (Cr/Pr)³ , where
Other Design Consideration
- Securing repeatability of the turntable position and fixing the turntable with one bolt.
- In this example two round locating pins are used for turntable positioning, combination of round and diamond pin can also be effectively used.
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