The unique GBU 40° angular contact is design to drive with the minimum of friction force while the design performs not only the highest sensitivity but also the rigidity.
Example of ldentitcation number of Assembled Set
GSF、GST Spline Shaft Cross-Sectional Shape
Solid Spline Shaft Cross-Sectional Shape（Unit:mmmm）
Stats(mm) /NominalDiameter | 6 | 8 | 10 | 13 | 16 | 20 | 25 | 30 | 40 | 50 |
Inner Diameter(Φd) | 5.25 | 7.27 | 8.97 | 11.82 | 14.72 | 18.63 | 23.43 | 28.53 | 38.3 | 47.05 |
Outer Diameter(ΦD h7) | 6 | 8 | 10 | 13 | 16 | 20 | 25 | 30 | 40 | 50 |
Mass(kg/m) | 0.22 | 0.39 | 0.6 | 1.03 | 1.56 | 2.44 | 3.8 | 5.49 | 9.69 | 15.19 |
Tolerance(μm) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Hollow Spline Shaft Cross-Sectional Shape（Unit:mmmm）
Stats(mm) /NominalDiameter | 6 | 8 | 10 | 13 | 16 | 20 | 25 | 30 | 40 | 50 |
Inner Diameter(Φd) | 2 | 3 | 4 | 7 | 8 | 10 | 15 | 16 | 20 | 26 |
Outer Diameter(ΦD h7) | 6 | 8 | 10 | 13 | 16 | 20 | 25 | 30 | 40 | 50 |
Mass(kg/m) | 0.177 | 0.33 | 0.506 | 0.872 | 1.25 | 1.82 | 2.92 | 3.93 | 6.75 | 11.4 |
Tolerance(μm) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Specification and Size Table
| Model No. | Diameter | Row | Main dimensions of ball spline nuts | Keyway Dimensions | |||||
| d | D | L | S | L1 | Oil | b | t | ||
| h7 | Q | H8 | +0.050 | ||||||
| GST006 | 6 | 2 | 14 | 25 | 16.7 | 10.5 | 1 | 2.5 | 1.2 |
| GST008 | 8 | 2 | 16 | 27 | 15.7 | 10.5 | 1.5 | 2.5 | 1.2 |
| GST010 | 10 | 2 | 21 | 33 | 20 | 13 | 1.5 | 3 | 1.5 |
| GST013 | 13 | 2 | 24 | 36 | 23 | 15 | 1.5 | 3 | 1.5 |
| GST016 | 16 | 2 | 31 | 50 | 34 | 17.5 | 2 | 3.5 | 2 |
| GST020 | 20 | 2 | 35 | 56 | 39.7 | 29 | 2 | 4 | 2.5 |
| GST025 | 25 | 4 | 42 | 71 | 50.3 | 36 | 3 | 4 | 2.5 |
| GST030 | 30 | 4 | 47 | 80 | 60 | 42 | 3 | 4 | 2.5 |
| GST040 | 40 | 4 | 64 | 100 | 70 | 52 | 4 | 6 | 3.5 |
| GST050 | 50 | 4 | 80 | 125 | 91 | 58 | 4 | 8 | 4 |
| Model No. | Basic Load Rating | Basic Torsion | Static Permissible Moment | Mass | ||||
| C | Co | CT | CoT | MA1 | MA2 | Spline Nut | Spline Shaft | |
| kgf | kgf | kgf ·m | kgf ·m | kgf ·m | kgf ·m | g | kg/m | |
| GST006 | 137 | 225 | 0.46 | 0.76 | 0.39 | 3.48 | 14 | 0.22 |
| GST008 | 137 | 225 | 0.6 | 0.99 | 0.39 | 3.82 | 16 | 0.39 |
| GST010 | 285 | 397 | 1.62 | 2.25 | 0.95 | 8.53 | 37 | 0.6 |
| GST013 | 396 | 540 | 2.89 | 3.94 | 1.5 | 12.46 | 52 | 1.03 |
| GST016 | 545 | 849 | 4.77 | 7.43 | 3.71 | 26.09 | 130 | 1.56 |
| GST020 | 724 | 1109 | 7.9 | 12.09 | 5.53 | 38 | 188 | 2.44 |
| GST025 | 1003 | 1593 | 21.99 | 43.01 | 10.35 | 68.59 | 285 | 3.8 |
| GST030 | 1160 | 1980 | 30.26 | 62.93 | 15.68 | 93.27 | 395 | 5.49 |
| GST040 | 2972 | 4033 | 105.37 | 176.05 | 36.59 | 246.34 | 843 | 9.69 |
| GST050 | 4086 | 5615 | 179.89 | 304.35 | 51.58 | 428.72 | 1758 | 15.19 |
1kgf≈9.8N
