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)

Installation Guide Made-To-Order

Support Unit (High load)

HBK Series

Support Unit For Ball Screw (HBK)
Features
  • This product can accommodate higher loads compared to the SWBK series.
  • Preload is determined by the fastening torque of the locknut; therefore, be sure to follow the recommended fastening torque.
  • Supplied as standard with a grease injection type.
  • The product comes with a locknut included.
Structure
Bearing Combinations
  • The wide contact surface of the cylindrical rollers supports both radial loads and partial axial loads, ensuring structural rigidity.
  • The cage precisely keeps the rollers evenly spaced. This reduces friction, heat generation, and noise, enabling stable rotation even under high-load and high-torque conditions.
  • The bearing is designed for direct grease injection, allowing long-term stable lubrication.
How to Order
①
Surface
Treatment		 Mark Surface Treatment
No mark Black Oxide
RA Low temperature Black Chrome Plating (Raydent)
Grease Model Standard LG2 AFE-CA AFF HT-Z1 NBU-15 XL-600
Mark No mark AG AE AF AH AN AX

※ For detailed information regarding grease replacement, please refer to the guideline pages in the catalogue under the “Made-To-Order Process.”

HBK Series Specification
Model Basic Load(Axial)
(N)		 Basic Load(Radial)
(N)		 Axial Rigidity
(N/㎛)		 Max. rpm
(min-1)		 Max. Starting
Torque (N·cm)		 Recommended Fastening
Torque (N·cm)
Dynamic Static Dynamic Static
HBK-30 90,400 216,200 18,100 32,900 3,100 1,300 140 75.4
HBK-40 101,800 266,100 26,000 56,500 3,800 1,200 180 104.7
HBK-50 163,000 453,000 35,600 64,400 5,300 1,100 360 178.5
Recommended Shape Of Ball Screw Shaft-End (Fixed Side)
Dimensions (mm) Lock-nut
d A Model E S Model Size
M x pitch
Ø25 – Ø28 17 SWBK-17 DF 81 23 HLRN-17 M17 x 1.0
DFD 96
20 SWBK-20 DF 81 23 HLRN-20 M20 x 1.0
DFD 96
Ø30 – Ø36 25 SWBK-25 DF 89 26 HLRN-25 M25 x 1.5
DFD 104
Ø40 30 SWBK-30 DF 89 26 HLRN-30 M30 x 1.5
DFD 104
HBK-30 89 26
Ø45 35 SWBK-35 DF 90 28 HLRN-35 M35 x 1.5
DFD 105
DFF 120
Ø50 – Ø55 40 SWBK-40 DF 92 30 HLRN-40 M40 x 1.5
DFD 107
DFF 122
HBK-40 101 30
Ø63 – Ø70 50 SWBK-50 DF 117 34 HLRN-50 M50 x 1.5
DFD 137
DFF 157
HBK-50 111 34