Workpiece Grip Ball Unit (Screw Type) (TBU)

Caution
Product Description
Swivel bolt for tip used to attach jig etc. Tip available in 3 types: serration, flat & plastic.
Drawing

TBU-S 12025–16050 (serration type)

TBU-F 12025–16050 (flat type)
TBU-E 12025–16050 (resin type)

TBU-S 20030–24080 (serration type)

TBU-F 20030–24080 (flat type)
TBU-E 20030–24080 (resin type)
Product Specification
Material
| Type | Main body | Ball | Tip |
|---|---|---|---|
| TBU-S 12025–16050 TBU-F 12025–16050 | SCM440 Hardening and Tempering Black oxide coating HRC45 | SKH51 Hardening and Tempering Black oxide coating HRC60 | |
| TBU-E 12025–16050 | Polyacetal White | ||
| TBU-S 20030–24080 | SUS440 | SKH51 Hardening and Tempering Black oxide coating HRC62 | |
| TBU-F 20030–24080 | SNCM220 Carburizing and hardening Black oxide coating HRC60 | ||
| TBU-E 20030–24080 | Polyacetal White | ||
Specifications Table
| Serration type | Flat type | Resin type | M | L | d | W | Allowable load (kN) Note | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Part number | Weight (g) | Part number | Weight (g) | Part number | Weight (g) | |||||
| TBU-12025-S | 13 | TBU-12025-F | 13 | TBU-12025-E | 12 | M12 × 1.75 | 25 | 6.0 | 6 | 5.3 |
| TBU-12035-S | 19 | TBU-12035-F | 19 | TBU-12035-E | 18 | 35 | ||||
| TBU-12050-S | 28 | TBU-12050-F | 28 | TBU-12050-E | 27 | 50 | ||||
| TBU-16025-S | 26 | TBU-16025-F | 26 | TBU-16025-E | 25 | M16 x 2 | 25 | 8.5 | 8 | 10.9 |
| TBU-16035-S | 39 | TBU-16035-F | 39 | TBU-16035-E | 38 | 35 | ||||
| TBU-16050-S | 58 | TBU-16050-F | 58 | TBU-16050-E | 57 | 50 | ||||
| TBU-20030-S | 57 | TBU-20030-F | 57 | TBU-20030-E | 53 | M20 × 2.5 | 30 | 10.0 | 10 | 18.4 |
| TBU-20050-S | 90 | TBU-20050-F | 90 | TBU-20050-E | 86 | 50 | ||||
| TBU-20070-S | 123 | TBU-20070-F | 123 | TBU-20070-E | 119 | 70 | ||||
| TBU-24040-S | 113 | TBU-24040-F | 113 | TBU-24040-E | 107 | M24 × 3 | 40 | 12.0 | 24.5 | |
| TBU-24080-S | 210 | TBU-24080-F | 210 | TBU-24080-E | 204 | 80 | ||||
Note: Excludes resin type.
Usage Example

Can be used as a clamper or stopper.
Product Feature Details
This bolt has a swivel tip and can be used as an attachment for jigs and other tools.
3 types of tips are available: serration, flat, and resin.
Cautions and Prohibitions
Chip mounting
For the TBU-S20030 to 24080, TBU-F20030 to 24080, and TBU-E20030 to 24080 tips, push the ball out from the back side and attach it with the included hex socket head cap screw.
Chip replacement
For the following products, the tip can be replaced by removing the bolt that secures the tip.
| Main body part number | Tip part number | Main body part number | Tip part number | Main body part number | Tip part number |
|---|---|---|---|---|---|
| TBU-20030-S | HS-100 | TBU-20030-F | SRP-100 | TBU-20030-E | DRP-100 |
| TBU-20050-S | TBU-20050-F | TBU-20050-E | |||
| TBU-20070-S | TBU-20070-F | TBU-20070-E | |||
| TBU-24040-S | HS-120 | TBU-24040-F | SRP-120 | TBU-24040-E | DRP-120 |
| TBU-24080-S | TBU-24080-F | TBU-24080-E |