Mechanically Jointed Rodless Cylinder, Slide Bearing Guide Type, MY3M Series

Caution
- Refer to the catalog for product specifications.
- Product pictures are representations. CAD data is not supported by some of the model numbers.
Product Description
Bearing guide type of Mechanically Jointed Rodless Cylinder packed with functionality despite being low profile and compact.
[Features]
· The integrated guide enables direct loading of workpieces.
· Overall length (Z) has been reduced up to 140 mm.
· Height (H) has been reduced up to 36%.
· Weight has been reduced up to 55%.
Mechanically Jointed Rodless Cylinder, Slide Bearing Guide Type, MY3M Series Details

Mechanically Jointed Rodless Cylinder, Slide Bearing Guide Type, MY3M Series, product image
Mechanically Jointed Rodless Cylinder, Slide Bearing Guide Type, MY3M Series Specifications
| Tube inner diameter (mm) | 16 | 25 | 40 | 63 |
|---|---|---|---|---|
| Usable fluids | Air | |||
| Operating type | Double-acting type | |||
| Operating pressure range | 0.2 to 0.8 MPa | 0.15 to 0.7 MPa | ||
| Guaranteed pressure resistance | 1.05 MPa | |||
| Ambient temperature and working fluid temperature | 5 to 60°C | |||
| Cushion | Air cushion | |||
| Lubrication | Not required (lubrication-free) | |||
| Allowable difference of stroke length | 1,000 mm or less (0 to +1.8), 1,001 mm and above (0 to +2.8) | |||
| Piping connection port diameter (Rc, NPT, G) | M5 × 0.8 | 1/8 | 1/4 | 3/8 |
Model number indication method

Model number example
Made-to-order specifications
| Display symbol | Specifications/details |
|---|---|
| -X168 | Helical coil insert screw specifications |
Made-to-order specifications
| Display symbol | Specifications/details |
|---|---|
| -XB11 | Long stroke type |
| -XB22 | Shock absorber / soft type RJ series-equipped specifications |
Structural Drawing

Mechanically Jointed Rodless Cylinder, Slide Bearing Guide Type, MY3M Series, structural drawing
Components
| Number | Part name | Materials | Additional notes |
|---|---|---|---|
| 1 | Cylinder tube | Aluminum alloy | Hard anodized aluminum |
| 2 | Head cover | Aluminum alloy | Hard anodized aluminum |
| 3 | Slide table | Aluminum alloy | Hard anodized aluminum |
| 4 | Piston yoke | Stainless steel | - |
| 5 | Piston | Polyamide | - |
| 6 | Wear ring | Polyacetal | - |
| 7 | Belt separator | Polyacetal | - |
| 8 | Belt clamp | Polybutylene terephthalate | - |
| 11 | Stopper | Carbon steel | Nickel plating |
| 12 | Cushion boss | Aluminum alloy | Chromate |
| 13 | Bearing | Polyacetal | - |
| 16 | Inner wiper | Special resin | - |
| 17 | End cover | Polyamide | - |
| 18 | Adjusting arm A | Aluminum alloy | Chromate |
| 19 | Adjusting arm B | Aluminum alloy | Chromate |
| 20 | Back-up spring | Stainless steel | - |
| 21 | Bearing adjustment rubber | NBR | - |
| 22 | Coupler body | Aluminum alloy | Hard anodized aluminum |
| 23 | Coupler pin | Carbon steel | Electroless nickel plating |
| 24 | Spacer | Stainless steel | - |
| 25 | Magnet | - | - |
| 26 | Seal magnet | Rubber magnet | - |
| 28 | Cushion needle | Rolled steel | Nickel plating |
| 31 | Hex socket set screw | Chrome molybdenum steel | Chromate |
| 32 | Hex socket set screw | Chrome molybdenum steel | Chromate |
| 33 | Hex socket head bolt | Chrome molybdenum steel | Chromate |
| 34 | Hex socket head cap button screw | Chrome molybdenum steel | Chromate |
| 35 | Hex socket head cap button screw | Chrome molybdenum steel | Chromate |
| 36 | Hex socket head bolt | Chrome molybdenum steel | Chromate |
| 37 | Plug with hex socket head | Carbon steel | Chromate |
Replacement parts / packing
| Number | Part name | Materials | Quantity | MY3M16 | MY3M25 | MY3M40 | MY3M63 |
|---|---|---|---|---|---|---|---|
| 9 | Seal belt | Urethane polyamide | 1 | MY3B16-16C-[stroke] | MY3B25-16C-[stroke] | MY3B40-16C-[stroke] | MY3B63-16A-[stroke] |
| 10 | Dust seal band | Stainless steel | 1 | MY3B16-16B-[stroke] | MY3B25-16B-[stroke] | MY3B40-16B-[stroke] | MY3B63-16B-[stroke] |
| 29 | O-ring | NBR | 2 | KA00309 | KA00309 | KA00320 | KA00309 |
| (ø4 (diameter 4 mm) × ø1.8 (diameter 1.8 mm) × ø1.1 (diameter 1.1 mm)) | (ø4 (diameter 4 mm) × ø1.8 (diameter 1.8 mm) × ø1.1 (diameter 1.1 mm)) | (ø7.15 (diameter 7.15 mm) × ø3.75 (diameter 3.75 mm) × ø1.7 (diameter 1.7 mm)) | (ø8.3 (diameter 8.3 mm) × ø4.5 (diameter 4.5 mm) × ø1.9 (diameter 1.9 mm)) | ||||
| 14 | Tube gasket | NBR | 2 | MY3B16-PS | MY3B25-PS | MY3B40-PS | MY3B63-PS |
| 15 | Piston packing | NBR | 2 | ||||
| 27 | O-ring | NBR | 4 | ||||
| 30 | Cushion seal | NBR | 2 |
- *Because the seal kit includes (14), (15), (27) and (30), order using the order number of each tube inner diameter.
- *The seal kit includes a grease pack (10 g).
A grease pack is included when (9) or (10) are shipped as single items. (10 g per 1,000 stokes)
When just the grease pack is required, please order using the part number below.
Grease pack part number: GR-S-010 (10 g), GR-S-020 (20 g) - *For replacement procedures of the replacement parts or packing, refer to the instruction manual.
Mechanically Jointed Rodless Cylinder, Slide Bearing Guide Type, MY3M Series, sample dimensions

MY3M tube inner diameter and stroke dimensional drawing
(Unit: mm)
| Model | A | B | C | G | H | HG | L | LD | LH | LL | LW | M | MM | N | NE | NG |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MY3M16 | 61 | 6 | 18 | 9.5 | 33 | 5 | 65 | 3.5 | 20.5 | 28.5 | 64 | 6 | M4 × 0.7 | 13.5 | 22.5 | 8 |
| MY3M25 | 89 | 9.5 | 25 | 14 | 45 | 7.4 | 95 | 5.5 | 27 | 41.5 | 87 | 10 | M5 × 0.8 | 20 | 32 | 10 |
| MY3M40 | 138 | 14 | 38 | 18 | 63 | 12 | 160 | 8.6 | 35 | 58 | 124 | 13 | M6 × 1.0 | 27 | 46 | 15 |
| MY3M63 | 178 | 17 | 60 | 20.5 | 93 | 16.5 | 220 | 11 | 46 | 68 | 176 | 15 | M10 × 1.5 | 31 | 70 | 29 |
(Unit: mm)
| Model | NH | NT | NW | P | PA | PB | PE | PF | PG | Q | QW | TT | UU | YW | Z |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MY3M16 | 17.2 | 24 | 43 | M5 × 0.8 | 28 | 48 | 9.7 | 8.5 | 4 | 114 | 19 | 6.5 | 30 | 44.6 | 122 |
| MY3M25 | 24 | 34 | 65 | Rc, NPT, G1/8 | 40 | 68 | 14.5 | 12.2 | 6 | 166 | 30 | 9 | 47 | 63.6 | 178 |
| MY3M40 | 37 | 49 | 94 | Rc, NPT, G1/4 | 100 | 100 | 19.5 | 16.5 | 8.5 | 259 | 40 | 14 | 66 | 93.6 | 276 |
| MY3M63 | 58 | 76 | 139 | Rc, NPT, G3/8 | 130 | 150 | 23.5 | 27.5 | 10 | 336 | 64 | 20 | 99 | 138 | 356 |