Support Unit For Ball screw

Support unit for ball screw helps to support each shaft-ends of
ball screw. We, S.I.M provides diverse options according to sizes,
loads and purposes for our customers’ best convenience.
Support Unit for Ball Screw (Index)
Support Unit (For TM Screw)
SUPPORT UNIT FOR TM SCREW – Classification
- Load Support: Designed to support static (constant) loads in the radial direction.
- Durability: The double-row bearing structure increases fatigue life and ensures stable performance.
- Precision: Minimizes center misalignment of the bearing to achieve high positioning accuracy.
SUPPORT UNIT FOR TM SCREW – Classification

Fixed Side
- Easy screw fastening with simple lever operation of the clamping block
- All models are preloaded for stable support without vibration
- Equipped with an oil seal as standard to minimize lubrication loss and provide high dust protection
- Accompanied by lock-nut and collars (spacer)

Supported Side
- Accompanied by a deep-groove ball bearing and a snap-ring
- Compatible with ball screw support unit EF series
Recommended Shape of TM Screw Shaft-end (Fixed-side)

| Model | Bearing | d | A | B | Lock-nut | E | F | S | |
|---|---|---|---|---|---|---|---|---|---|
| Model | Size M × pitch |
||||||||
| ET-8 | 608ZZ | 10~12 | 8 | 6 | RN-8 | M8 x 1/0.75 | 35 | 21.5 | 10 |
| ET-10 | 6000ZZ | 10~15 | 10 | 8 | RN-10 | M10 x 1/0.75 | 36 | 29.5 | 11 |
| ET-12 | 6001ZZ | 14~18 | 12 | 10 | RN-12 | M12 x 1 | 36 | 29.5 | 11 |
| ET-15 | 6002ZZ | 20 | 15 | 12 | RN-15 | M15 x 1 | 44 | 34 | 13 |
| ET-20 | 6204ZZ | 25~28 | 20 | 17 | RN-20 | M20 x 1 | 64 | 44 | 17 |
How to Order
Fixed Side

Supported Side

| Surface Treatement |
Mark | Surface Treatment |
|---|---|---|
| no mark | Black Oxide | |
| RA | Low temperature Black Chrome Plating (Raydent) |






