![[THK] — LBS Ball Spline Nut (Medium-Heavy Load, Cylindrical with Keyway)](https://prosourcemro.com/wp-content/uploads/2026/05/001-959-1024x806.png)
Ball Splines
THK
[THK] — LBS Ball Spline Nut (Medium-Heavy Load, Cylindrical with Keyway)
Family ID: THK-LBS-BALL-SPLINE
THK LBS-type Ball Spline Nut, medium-heavy load type. Cylindrical outer diameter with keyway — most compact ball spline configuration. High-temperature option (metal retainer, up to 100°C) and felt seal available for LBS20–LBS100. Sizes: LBS15–LBS100.
9 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| LBS15 | THK LBS15, D=23mm L=40mm, CT=30.4N·m C0T=74.5N·m | THK | Model: LBS15 | Type: LBS Ball Spline Nut, Medium-Heavy Load | OD D: 23 mm | Length L: 40 mm | Keyway Width b: 3.5 mm (H8) | Keyway Depth t: 2.0 mm | Dynamic Torque CT: 30.4 N·m | Static Torque C0T: 74.5 N·m | Dynamic Load C: 4.4 kN | Static Load C0: 8.4 kN | Nut Mass: 0.06 kg | Shaft Mass: 1.0 kg/m | Options: Standard only | ||
| LBS20 | THK LBS20, D=30mm L=50mm, CT=74.5N·m C0T=160.0N·m | THK | Model: LBS20 | Type: LBS Ball Spline Nut, Medium-Heavy Load | OD D: 30 mm | Length L: 50 mm | Keyway Width b: 4.0 mm (H8) | Keyway Depth t: 2.5 mm | Dynamic Torque CT: 74.5 N·m | Static Torque C0T: 160.0 N·m | Dynamic Load C: 7.8 kN | Static Load C0: 14.9 kN | Nut Mass: 0.14 kg | Shaft Mass: 1.8 kg/m | Options: High-temp (metal retainer, ≤100°C); Felt seal option available | ||
| LBS25 | THK LBS25, D=37mm L=60mm, CT=154.0N·m C0T=307.0N·m | THK | Model: LBS25 | Type: LBS Ball Spline Nut, Medium-Heavy Load | OD D: 37 mm | Length L: 60 mm | Keyway Width b: 5.0 mm (H8) | Keyway Depth t: 3.0 mm | Dynamic Torque CT: 154.0 N·m | Static Torque C0T: 307.0 N·m | Dynamic Load C: 13.0 kN | Static Load C0: 23.5 kN | Nut Mass: 0.25 kg | Shaft Mass: 2.7 kg/m | Options: High-temp (metal retainer, ≤100°C); Felt seal option available | ||
| LBS30 | THK LBS30, D=45mm L=70mm, CT=273.0N·m C0T=538.0N·m | THK | Model: LBS30 | Type: LBS Ball Spline Nut, Medium-Heavy Load | OD D: 45 mm | Length L: 70 mm | Keyway Width b: 7.0 mm (H8) | Keyway Depth t: 4.0 mm | Dynamic Torque CT: 273.0 N·m | Static Torque C0T: 538.0 N·m | Dynamic Load C: 19.3 kN | Static Load C0: 33.8 kN | Nut Mass: 0.44 kg | Shaft Mass: 3.8 kg/m | Options: High-temp (metal retainer, ≤100°C); Felt seal option available | ||
| LBS40 | THK LBS40, D=60mm L=90mm, CT=599.0N·m C0T=1140.0N·m | THK | Model: LBS40 | Type: LBS Ball Spline Nut, Medium-Heavy Load | OD D: 60 mm | Length L: 90 mm | Keyway Width b: 10.0 mm (H8) | Keyway Depth t: 4.5 mm | Dynamic Torque CT: 599.0 N·m | Static Torque C0T: 1140.0 N·m | Dynamic Load C: 31.9 kN | Static Load C0: 53.4 kN | Nut Mass: 1.0 kg | Shaft Mass: 6.8 kg/m | Options: High-temp (metal retainer, ≤100°C); Felt seal option available | ||
| LBS50 | THK LBS50, D=75mm L=100mm, CT=1100.0N·m C0T=1940.0N·m | THK | Model: LBS50 | Type: LBS Ball Spline Nut, Medium-Heavy Load | OD D: 75 mm | Length L: 100 mm | Keyway Width b: 15.0 mm (H8) | Keyway Depth t: 5.0 mm | Dynamic Torque CT: 1100.0 N·m | Static Torque C0T: 1940.0 N·m | Dynamic Load C: 46.6 kN | Static Load C0: 73.0 kN | Nut Mass: 1.7 kg | Shaft Mass: 10.6 kg/m | Options: High-temp (metal retainer, ≤100°C); Felt seal option available | ||
| LBS70 | THK LBS70, D=100mm L=110mm, CT=2190.0N·m C0T=3800.0N·m | THK | Model: LBS70 | Type: LBS Ball Spline Nut, Medium-Heavy Load | OD D: 100 mm | Length L: 110 mm | Keyway Width b: 18.0 mm (H8) | Keyway Depth t: 6.0 mm | Dynamic Torque CT: 2190.0 N·m | Static Torque C0T: 3800.0 N·m | Dynamic Load C: 66.4 kN | Static Load C0: 102.0 kN | Nut Mass: 3.1 kg | Shaft Mass: 21.3 kg/m | Options: High-temp (metal retainer, ≤100°C); Felt seal option available | ||
| LBS85 | THK LBS85, D=120mm L=140mm, CT=3620.0N·m C0T=6360.0N·m | THK | Model: LBS85 | Type: LBS Ball Spline Nut, Medium-Heavy Load | OD D: 120 mm | Length L: 140 mm | Keyway Width b: 20.0 mm (H8) | Keyway Depth t: 7.0 mm | Dynamic Torque CT: 3620.0 N·m | Static Torque C0T: 6360.0 N·m | Dynamic Load C: 90.5 kN | Static Load C0: 141.0 kN | Nut Mass: 5.5 kg | Shaft Mass: 32.0 kg/m | Options: High-temp (metal retainer, ≤100°C); Felt seal option available | ||
| LBS100 | THK LBS100, D=140mm L=160mm, CT=5190.0N·m C0T=12600.0N·m | THK | Model: LBS100 | Type: LBS Ball Spline Nut, Medium-Heavy Load | OD D: 140 mm | Length L: 160 mm | Keyway Width b: 28.0 mm (H8) | Keyway Depth t: 9.0 mm | Dynamic Torque CT: 5190.0 N·m | Static Torque C0T: 12600.0 N·m | Dynamic Load C: 126.0 kN | Static Load C0: 237.0 kN | Nut Mass: 9.5 kg | Shaft Mass: 45.0 kg/m | Options: High-temp (metal retainer, ≤100°C); Felt seal option available |
