JT Series Standard/Lightweight And Compact Type Floating Joint

Caution
- Product images may be representative images. Refer to the manufacturer's catalog for details
Product Description
Floating joint compatible with space-saving cylinder (JCM).
[Features]
⋅ Maximum weight reduced by 56%.
· Screw size is the same as the screw size for standard JA Series.
· More compact and lightweight combinations are possible by using the JT Series with a JCM Series cylinder.
· With dustproof cover.
· Operating pressure: pneumatic cylinder.
· Mounting: basic type.
JT Series Standard/Lightweight And Compact Type Floating Joint Specifications

JT Series Floating Joint external appearance

JT Series Floating Joint operating range
| Model | Nominal thread size | Allowable axial force (N) | Allowable eccentricity U (mm) | Rotating angle (°) | Operating temperature range |
|---|---|---|---|---|---|
| JT20 | M8 × 1.25 | 220 | 0.5 | ±2 | -10 to +70°C |
| JT32 | M10 × 1.25 | 560 | 0.5 | ±2 | |
| JT40 | M14 × 1.5 | 880 | 0.75 | ±2 |
(Standard Type / Pneumatic: Up to 0.7 MPa) Dimensions
(Unit: mm)

JT Series Floating Joint dimensional drawing
| Model | Port size M | A | B | øC | øD | øE | □F | G | Width across flats H | Maximum thread depth P | Weight |
|---|---|---|---|---|---|---|---|---|---|---|---|
| JT20 | M8 × 1.25 | 19.2 | 8 | 11 | (25.4) | 23 | 10 | 13.6 | 22 | 9.5 | 22 g |
| JT32 | M10 × 1.25 | 23 | 10 | 13.4 | (30.6) | 28 | 12 | 16.3 | 27 | 11.5 | 38 g |
| JT40 | M14 × 1.5 | 29 | 14 | 19 | (40.4) | 37.4 | 17 | 20.3 | 36 | 15.5 | 98 g |
*Value in ( ) is the dimension when the dust cover is used.
Compatible Cylinder
(Unit: mm)
| Model | Compatible cylinder* | Recommended cylinder | ||
|---|---|---|---|---|
| Bore size | Operating pressure | |||
| JT20 | ø20 (bore size 20 mm) | 0.7 MPa or less | JC□M20 (rod end male thread type) | |
| JT32 | ø25 (bore size 25 mm) | JC□M25 (rod end male thread type) | ||
| ø32 (bore size 32 mm) | JC□M32 (rod end male thread type) | |||
| JT40 | ø40 (bore size 40 mm) | JC□M40 (rod end male thread type) | ||
*Make sure to use a cylinder with a built-in cushion mechanism.
Diagram

JT Series Floating Joint Diagram
| Number | Description | Material | Note |
|---|---|---|---|
| 1 | Stud | Carbon steel | Zinc chromate |
| 2 | Case | Aluminum alloy | Chromate |
| 3 | Socket | Carbon steel | Zinc chromate |
| 4 | Ring | Rolled steel | Nitriding treatment |
| 5 | Slider | Rolled steel | Nitriding treatment |
| 6 | Plate | Rolled steel | Zinc chromate |
| 7 | Dust cover | Synthetic rubber | - |
Replacement part (No. 7 / dust cover) compatible model
- P215420-07: JT20
- P215432-07: JT32
- P215440-07: JT40
Mounting Precautions
- *1Maintenance space
Allow sufficient space for maintenance and inspection. - *2Operate the socket by hand before mounting to ensure it moves smoothly.
The dust cover may stick to the socket. Move the dust cover at the base of the socket with your fingers, or twist the socket right and left gently to free it before mounting. - *3Tighten the product to the appropriate torque for the screw size using an appropriate tool. In addition, apply a locking adhesive.
When connecting the driven object to the cylinder rod with a floating joint, hold the octagonal and square parts with an appropriate wrench and tighten the floating joint to the appropriate tightening torque according to the table below.
The floating joint may be broken or malfunction if parts other than the octagonal or square parts are gripped and rotated with pliers or a wrench, or if it is tightened to an excessive torque.
As a countermeasure against loosening caused by vibration or other reasons, apply locking adhesive. - *4See the manufacturer's catalog for product information other than the above.

Reference drawing for correct mounting of JT Series Floating Joint
- *Tighten with the rod end nut attached to the cylinder.
- *Screw the floating joint all the way to the end face.
| Model | Stud (male thread side) | Socket (female thread side) | ||
|---|---|---|---|---|
| Wrench size (bowl) | Tightening torque | Wrench size (socket) | Tightening torque | |
| JT20 | Width 22 mm | 12 N・m | Width 10 mm | 8 to 12 N・m |
| JT32 | Width 27 mm | 24 N・m | Width 12 mm | 15 to 24 N・m |
| JT40 | Width 36 mm | 68 N・m | Width 17 mm | 40 to 68 N・m |