• THK LBR Ball Spline Nut (Center Flange, High-Torque)
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THK LBR Ball Spline Nut (Center Flange, High-Torque)

THK LBR Ball Spline Nut (Center Flange, High-Torque)

THK LBR-type Ball Spline Nut with center flange for high moment load applications such as industrial robot arms.

Key features

  • High-temperature option (metal retainer, up to 100°C) and felt seal option available on most sizes
  • Sizes: LBR15–LBR100

Specifications

Type LBR Ball Spline Nut, Center Flange
LBR15 THK LBR15, D=25mm L=40mm center flange, CT=30.4N·m C0T=74.5N·m | Model: LBR15 | Type: LBR Ball Spline Nut, Center Flange | OD D: 25 mm | Spigot OD D3: 25.35 mm | Length L: 40 mm | Flange OD D1: 45.4 mm | Flange Height H: 9 mm | E: 15.5 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: 0.14 kg | Shaft Mass: 1.0 kg/m | Options: Standard only
LBR20 THK LBR20, D=30mm L=60mm center flange, CT=90.2N·m C0T=213.0N·m | Model: LBR20 | Type: LBR Ball Spline Nut, Center Flange | OD D: 30 mm | Spigot OD D3: 30.35 mm | Length L: 60 mm | Flange OD D1: 56.4 mm | Flange Height H: 12 mm | E: 24.0 mm | Dynamic Torque CT: 90.2 N·m | Static Torque C0T: 213.0 N·m | Dynamic Load C: 9.4 kN | Static Load C0: 20.1 kN | Nut Mass: 0.33 kg | Shaft Mass: 1.8 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR25 THK LBR25, D=40mm L=70mm center flange, CT=176.0N·m C0T=381.0N·m | Model: LBR25 | Type: LBR Ball Spline Nut, Center Flange | OD D: 40 mm | Spigot OD D3: 40.35 mm | Length L: 70 mm | Flange OD D1: 70.4 mm | Flange Height H: 14 mm | E: 28.0 mm | Dynamic Torque CT: 176.0 N·m | Static Torque C0T: 381.0 N·m | Dynamic Load C: 14.9 kN | Static Load C0: 28.7 kN | Nut Mass: 0.54 kg | Shaft Mass: 2.7 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR30 THK LBR30, D=45mm L=80mm center flange, CT=312.0N·m C0T=657.0N·m | Model: LBR30 | Type: LBR Ball Spline Nut, Center Flange | OD D: 45 mm | Spigot OD D3: 45.4 mm | Length L: 80 mm | Flange OD D1: 75.4 mm | Flange Height H: 16 mm | E: 32.0 mm | Dynamic Torque CT: 312.0 N·m | Static Torque C0T: 657.0 N·m | Dynamic Load C: 22.5 kN | Static Load C0: 41.4 kN | Nut Mass: 0.9 kg | Shaft Mass: 3.8 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR40 THK LBR40, D=60mm L=100mm center flange, CT=696.0N·m C0T=1420.0N·m | Model: LBR40 | Type: LBR Ball Spline Nut, Center Flange | OD D: 60 mm | Spigot OD D3: 60.4 mm | Length L: 100 mm | Flange OD D1: 96.4 mm | Flange Height H: 18 mm | E: 41.0 mm | Dynamic Torque CT: 696.0 N·m | Static Torque C0T: 1420.0 N·m | Dynamic Load C: 37.1 kN | Static Load C0: 66.9 kN | Nut Mass: 1.7 kg | Shaft Mass: 6.8 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR50 THK LBR50, D=75mm L=112mm center flange, CT=1290.0N·m C0T=2500.0N·m | Model: LBR50 | Type: LBR Ball Spline Nut, Center Flange | OD D: 75 mm | Spigot OD D3: 75.4 mm | Length L: 112 mm | Flange OD D1: 112.4 mm | Flange Height H: 20 mm | E: 46.0 mm | Dynamic Torque CT: 1290.0 N·m | Static Torque C0T: 2500.0 N·m | Dynamic Load C: 55.1 kN | Static Load C0: 94.1 kN | Nut Mass: 2.7 kg | Shaft Mass: 10.6 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR60 THK LBR60, D=90mm L=127mm center flange, CT=1870.0N·m C0T=3830.0N·m | Model: LBR60 | Type: LBR Ball Spline Nut, Center Flange | OD D: 90 mm | Spigot OD D3: 90.5 mm | Length L: 127 mm | Flange OD D1: 134.5 mm | Flange Height H: 22 mm | E: 52.5 mm | Dynamic Torque CT: 1870.0 N·m | Static Torque C0T: 3830.0 N·m | Dynamic Load C: 66.2 kN | Static Load C0: 121.0 kN | Nut Mass: 3.7 kg | Shaft Mass: 15.6 kg/m | Options: High-temp option (metal retainer, ≤100°C)
LBR70 THK LBR70, D=95mm L=135mm center flange, CT=3000.0N·m C0T=6090.0N·m | Model: LBR70 | Type: LBR Ball Spline Nut, Center Flange | OD D: 95 mm | Spigot OD D3: 95.6 mm | Length L: 135 mm | Flange OD D1: 140.6 mm | Flange Height H: 24 mm | E: 55.5 mm | Dynamic Torque CT: 3000.0 N·m | Static Torque C0T: 6090.0 N·m | Dynamic Load C: 90.8 kN | Static Load C0: 164.0 kN | Nut Mass: 6.0 kg | Shaft Mass: 21.3 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR85 THK LBR85, D=120mm L=155mm center flange, CT=4740.0N·m C0T=9550.0N·m | Model: LBR85 | Type: LBR Ball Spline Nut, Center Flange | OD D: 120 mm | Spigot OD D3: 120.6 mm | Length L: 155 mm | Flange OD D1: 170.6 mm | Flange Height H: 26 mm | E: 64.5 mm | Dynamic Torque CT: 4740.0 N·m | Static Torque C0T: 9550.0 N·m | Dynamic Load C: 119.0 kN | Static Load C0: 213.0 kN | Nut Mass: 8.3 kg | Shaft Mass: 32.0 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR100 THK LBR100, D=140mm L=175mm center flange, CT=6460.0N·m C0T=14400.0N·m | Model: LBR100 | Type: LBR Ball Spline Nut, Center Flange | OD D: 140 mm | Spigot OD D3: 140.6 mm | Length L: 175 mm | Flange OD D1: 198.6 mm | Flange Height H: 34 mm | E: 70.5 mm | Dynamic Torque CT: 6460.0 N·m | Static Torque C0T: 14400.0 N·m | Dynamic Load C: 137.0 kN | Static Load C0: 271.0 kN | Nut Mass: 14.2 kg | Shaft Mass: 45.0 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
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10 product codes available in this family
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THK LBR Ball Spline Nut (Center Flange, High-Torque)

Brand THK·Ball Splines

Available part numbers (10)

LBR15, LBR20, LBR25, LBR30, LBR40, LBR50, LBR60, LBR70, LBR85, LBR100

How to order

Send the THK part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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Product codes & specifications
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Product codeSpec
LBR15THK LBR15, D=25mm L=40mm center flange, CT=30.4N·m C0T=74.5N·m | Model: LBR15 | Type: LBR Ball Spline Nut, Center Flange | OD D: 25 mm | Spigot OD D3: 25.35 mm | Length L: 40 mm | Flange OD D1: 45.4 mm | Flange Height H: 9 mm | E: 15.5 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: 0.14 kg | Shaft Mass: 1.0 kg/m | Options: Standard only
LBR20THK LBR20, D=30mm L=60mm center flange, CT=90.2N·m C0T=213.0N·m | Model: LBR20 | Type: LBR Ball Spline Nut, Center Flange | OD D: 30 mm | Spigot OD D3: 30.35 mm | Length L: 60 mm | Flange OD D1: 56.4 mm | Flange Height H: 12 mm | E: 24.0 mm | Dynamic Torque CT: 90.2 N·m | Static Torque C0T: 213.0 N·m | Dynamic Load C: 9.4 kN | Static Load C0: 20.1 kN | Nut Mass: 0.33 kg | Shaft Mass: 1.8 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR25THK LBR25, D=40mm L=70mm center flange, CT=176.0N·m C0T=381.0N·m | Model: LBR25 | Type: LBR Ball Spline Nut, Center Flange | OD D: 40 mm | Spigot OD D3: 40.35 mm | Length L: 70 mm | Flange OD D1: 70.4 mm | Flange Height H: 14 mm | E: 28.0 mm | Dynamic Torque CT: 176.0 N·m | Static Torque C0T: 381.0 N·m | Dynamic Load C: 14.9 kN | Static Load C0: 28.7 kN | Nut Mass: 0.54 kg | Shaft Mass: 2.7 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR30THK LBR30, D=45mm L=80mm center flange, CT=312.0N·m C0T=657.0N·m | Model: LBR30 | Type: LBR Ball Spline Nut, Center Flange | OD D: 45 mm | Spigot OD D3: 45.4 mm | Length L: 80 mm | Flange OD D1: 75.4 mm | Flange Height H: 16 mm | E: 32.0 mm | Dynamic Torque CT: 312.0 N·m | Static Torque C0T: 657.0 N·m | Dynamic Load C: 22.5 kN | Static Load C0: 41.4 kN | Nut Mass: 0.9 kg | Shaft Mass: 3.8 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR40THK LBR40, D=60mm L=100mm center flange, CT=696.0N·m C0T=1420.0N·m | Model: LBR40 | Type: LBR Ball Spline Nut, Center Flange | OD D: 60 mm | Spigot OD D3: 60.4 mm | Length L: 100 mm | Flange OD D1: 96.4 mm | Flange Height H: 18 mm | E: 41.0 mm | Dynamic Torque CT: 696.0 N·m | Static Torque C0T: 1420.0 N·m | Dynamic Load C: 37.1 kN | Static Load C0: 66.9 kN | Nut Mass: 1.7 kg | Shaft Mass: 6.8 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR50THK LBR50, D=75mm L=112mm center flange, CT=1290.0N·m C0T=2500.0N·m | Model: LBR50 | Type: LBR Ball Spline Nut, Center Flange | OD D: 75 mm | Spigot OD D3: 75.4 mm | Length L: 112 mm | Flange OD D1: 112.4 mm | Flange Height H: 20 mm | E: 46.0 mm | Dynamic Torque CT: 1290.0 N·m | Static Torque C0T: 2500.0 N·m | Dynamic Load C: 55.1 kN | Static Load C0: 94.1 kN | Nut Mass: 2.7 kg | Shaft Mass: 10.6 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR60THK LBR60, D=90mm L=127mm center flange, CT=1870.0N·m C0T=3830.0N·m | Model: LBR60 | Type: LBR Ball Spline Nut, Center Flange | OD D: 90 mm | Spigot OD D3: 90.5 mm | Length L: 127 mm | Flange OD D1: 134.5 mm | Flange Height H: 22 mm | E: 52.5 mm | Dynamic Torque CT: 1870.0 N·m | Static Torque C0T: 3830.0 N·m | Dynamic Load C: 66.2 kN | Static Load C0: 121.0 kN | Nut Mass: 3.7 kg | Shaft Mass: 15.6 kg/m | Options: High-temp option (metal retainer, ≤100°C)
LBR70THK LBR70, D=95mm L=135mm center flange, CT=3000.0N·m C0T=6090.0N·m | Model: LBR70 | Type: LBR Ball Spline Nut, Center Flange | OD D: 95 mm | Spigot OD D3: 95.6 mm | Length L: 135 mm | Flange OD D1: 140.6 mm | Flange Height H: 24 mm | E: 55.5 mm | Dynamic Torque CT: 3000.0 N·m | Static Torque C0T: 6090.0 N·m | Dynamic Load C: 90.8 kN | Static Load C0: 164.0 kN | Nut Mass: 6.0 kg | Shaft Mass: 21.3 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR85THK LBR85, D=120mm L=155mm center flange, CT=4740.0N·m C0T=9550.0N·m | Model: LBR85 | Type: LBR Ball Spline Nut, Center Flange | OD D: 120 mm | Spigot OD D3: 120.6 mm | Length L: 155 mm | Flange OD D1: 170.6 mm | Flange Height H: 26 mm | E: 64.5 mm | Dynamic Torque CT: 4740.0 N·m | Static Torque C0T: 9550.0 N·m | Dynamic Load C: 119.0 kN | Static Load C0: 213.0 kN | Nut Mass: 8.3 kg | Shaft Mass: 32.0 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available
LBR100THK LBR100, D=140mm L=175mm center flange, CT=6460.0N·m C0T=14400.0N·m | Model: LBR100 | Type: LBR Ball Spline Nut, Center Flange | OD D: 140 mm | Spigot OD D3: 140.6 mm | Length L: 175 mm | Flange OD D1: 198.6 mm | Flange Height H: 34 mm | E: 70.5 mm | Dynamic Torque CT: 6460.0 N·m | Static Torque C0T: 14400.0 N·m | Dynamic Load C: 137.0 kN | Static Load C0: 271.0 kN | Nut Mass: 14.2 kg | Shaft Mass: 45.0 kg/m | Options: High-temp option (metal retainer, ≤100°C); Felt seal option available

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