![[THK] — BNS Ball Screw / Spline Combined Unit (Heavy Load, Linear + Rotary, φ16~50)](https://prosourcemro.com/wp-content/uploads/2026/05/001-875-1024x814.png)
Ball Screws
THK
[THK] — BNS Ball Screw / Spline Combined Unit (Heavy Load, Linear + Rotary, φ16~50)
Family ID: THK-BNS
THK BNS Series Ball Screw / Ball Spline Combined Unit (Heavy Load Type). Ball screw and ball spline grooves on a single shaft — enables three motion modes (rotation, linear, and helical) with one axis. Integrated support bearing on both ball screw and ball spline nut OD. Shaft diameter range φ16~50mm. Custom shaft length available.
18 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| BNS1616+C3 | THK BNS1616, φ16 Lead16, C3 | THK | Shaft Diameter: φ16mm | Lead: 16mm | Ball Screw Ca: 3.9kN / C0a: 7.2kN | Ball Screw Support Bearing: 19.4kN / 19.2kN | Ball Spline C: 7.1kN / C0: 12.6kN | Ball Spline Support Bearing: 12.7kN / 11.8kN | Grade: C3 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS1616+C5 | THK BNS1616, φ16 Lead16, C5 | THK | Shaft Diameter: φ16mm | Lead: 16mm | Ball Screw Ca: 3.9kN / C0a: 7.2kN | Ball Screw Support Bearing: 19.4kN / 19.2kN | Ball Spline C: 7.1kN / C0: 12.6kN | Ball Spline Support Bearing: 12.7kN / 11.8kN | Grade: C5 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS1616+C7 | THK BNS1616, φ16 Lead16, C7 | THK | Shaft Diameter: φ16mm | Lead: 16mm | Ball Screw Ca: 3.9kN / C0a: 7.2kN | Ball Screw Support Bearing: 19.4kN / 19.2kN | Ball Spline C: 7.1kN / C0: 12.6kN | Ball Spline Support Bearing: 12.7kN / 11.8kN | Grade: C7 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS2020+C3 | THK BNS2020, φ20 Lead20, C3 | THK | Shaft Diameter: φ20mm | Lead: 20mm | Ball Screw Ca: 6.1kN / C0a: 12.3kN | Ball Screw Support Bearing: 26.8kN / 29.3kN | Ball Spline C: 10.2kN / C0: 17.8kN | Ball Spline Support Bearing: 16.2kN / 15.5kN | Grade: C3 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS2020+C5 | THK BNS2020, φ20 Lead20, C5 | THK | Shaft Diameter: φ20mm | Lead: 20mm | Ball Screw Ca: 6.1kN / C0a: 12.3kN | Ball Screw Support Bearing: 26.8kN / 29.3kN | Ball Spline C: 10.2kN / C0: 17.8kN | Ball Spline Support Bearing: 16.2kN / 15.5kN | Grade: C5 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS2020+C7 | THK BNS2020, φ20 Lead20, C7 | THK | Shaft Diameter: φ20mm | Lead: 20mm | Ball Screw Ca: 6.1kN / C0a: 12.3kN | Ball Screw Support Bearing: 26.8kN / 29.3kN | Ball Spline C: 10.2kN / C0: 17.8kN | Ball Spline Support Bearing: 16.2kN / 15.5kN | Grade: C7 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS2525+C3 | THK BNS2525, φ25 Lead25, C3 | THK | Shaft Diameter: φ25mm | Lead: 25mm | Ball Screw Ca: 9.1kN / C0a: 19.3kN | Ball Screw Support Bearing: 28.2kN / 33.3kN | Ball Spline C: 15.2kN / C0: 25.8kN | Ball Spline Support Bearing: 17.6kN / 18.0kN | Grade: C3 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS2525+C5 | THK BNS2525, φ25 Lead25, C5 | THK | Shaft Diameter: φ25mm | Lead: 25mm | Ball Screw Ca: 9.1kN / C0a: 19.3kN | Ball Screw Support Bearing: 28.2kN / 33.3kN | Ball Spline C: 15.2kN / C0: 25.8kN | Ball Spline Support Bearing: 17.6kN / 18.0kN | Grade: C5 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS2525+C7 | THK BNS2525, φ25 Lead25, C7 | THK | Shaft Diameter: φ25mm | Lead: 25mm | Ball Screw Ca: 9.1kN / C0a: 19.3kN | Ball Screw Support Bearing: 28.2kN / 33.3kN | Ball Spline C: 15.2kN / C0: 25.8kN | Ball Spline Support Bearing: 17.6kN / 18.0kN | Grade: C7 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS3232+C3 | THK BNS3232, φ32 Lead32, C3 | THK | Shaft Diameter: φ32mm | Lead: 32mm | Ball Screw Ca: 13.0kN / C0a: 29.8kN | Ball Screw Support Bearing: 30.0kN / 39.0kN | Ball Spline C: 20.5kN / C0: 34.0kN | Ball Spline Support Bearing: 20.1kN / 24.0kN | Grade: C3 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS3232+C5 | THK BNS3232, φ32 Lead32, C5 | THK | Shaft Diameter: φ32mm | Lead: 32mm | Ball Screw Ca: 13.0kN / C0a: 29.8kN | Ball Screw Support Bearing: 30.0kN / 39.0kN | Ball Spline C: 20.5kN / C0: 34.0kN | Ball Spline Support Bearing: 20.1kN / 24.0kN | Grade: C5 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS3232+C7 | THK BNS3232, φ32 Lead32, C7 | THK | Shaft Diameter: φ32mm | Lead: 32mm | Ball Screw Ca: 13.0kN / C0a: 29.8kN | Ball Screw Support Bearing: 30.0kN / 39.0kN | Ball Spline C: 20.5kN / C0: 34.0kN | Ball Spline Support Bearing: 20.1kN / 24.0kN | Grade: C7 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS4040+C3 | THK BNS4040, φ40 Lead40, C3 | THK | Shaft Diameter: φ40mm | Lead: 40mm | Ball Screw Ca: 21.4kN / C0a: 49.7kN | Ball Screw Support Bearing: 59.3kN / 74.1kN | Ball Spline C: 37.8kN / C0: 60.5kN | Ball Spline Support Bearing: 37.2kN / 42.5kN | Grade: C3 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS4040+C5 | THK BNS4040, φ40 Lead40, C5 | THK | Shaft Diameter: φ40mm | Lead: 40mm | Ball Screw Ca: 21.4kN / C0a: 49.7kN | Ball Screw Support Bearing: 59.3kN / 74.1kN | Ball Spline C: 37.8kN / C0: 60.5kN | Ball Spline Support Bearing: 37.2kN / 42.5kN | Grade: C5 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS4040+C7 | THK BNS4040, φ40 Lead40, C7 | THK | Shaft Diameter: φ40mm | Lead: 40mm | Ball Screw Ca: 21.4kN / C0a: 49.7kN | Ball Screw Support Bearing: 59.3kN / 74.1kN | Ball Spline C: 37.8kN / C0: 60.5kN | Ball Spline Support Bearing: 37.2kN / 42.5kN | Grade: C7 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS5050+C3 | THK BNS5050, φ50 Lead50, C3 | THK | Shaft Diameter: φ50mm | Lead: 50mm | Ball Screw Ca: 31.8kN / C0a: 77.6kN | Ball Screw Support Bearing: 62.2kN / 83.0kN | Ball Spline C: 60.9kN / C0: 94.5kN | Ball Spline Support Bearing: 41.6kN / 54.1kN | Grade: C3 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS5050+C5 | THK BNS5050, φ50 Lead50, C5 | THK | Shaft Diameter: φ50mm | Lead: 50mm | Ball Screw Ca: 31.8kN / C0a: 77.6kN | Ball Screw Support Bearing: 62.2kN / 83.0kN | Ball Spline C: 60.9kN / C0: 94.5kN | Ball Spline Support Bearing: 41.6kN / 54.1kN | Grade: C5 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) | ||
| BNS5050+C7 | THK BNS5050, φ50 Lead50, C7 | THK | Shaft Diameter: φ50mm | Lead: 50mm | Ball Screw Ca: 31.8kN / C0a: 77.6kN | Ball Screw Support Bearing: 62.2kN / 83.0kN | Ball Spline C: 60.9kN / C0: 94.5kN | Ball Spline Support Bearing: 41.6kN / 54.1kN | Grade: C7 | Shaft Length: Custom order | Type: Ball Screw + Ball Spline Combined, Heavy Load (BNS) |
