Convex Linear Motion Spline

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GJF Convex Linear Motion Spline

The GJF convex linear motion spline with flange spline nut can make linear motion with interference fit or zero clearance in the direction of rotation, so it can work in high speed straight motion and rotation. Even if the spline shaft is pulled out of the nut, the balls are prevented from falling by the use of retainers. The GJF convex linear motion spline has a compact structure and is easy to assembly. What is more, the GJF convex linear motion spline has a long lifetime and high hardness, as its spline bearing is made of HRC58 quenched alloy steel, and its spline nut is made of HRC58 quenched alloy steel or carburized and quenched alloy structural steel.

The convex linear motion spline is set with flange spline nut. There are three crests equally spaced at 120 degrees on the circumference of the spline shaft, and two rolls of balls (six rolls of balls in all) are held on both sides of each crest.

The convex linear motion spline is commonly applied to spindle of spot welding machine, tool post, indexing shaft, arms of industrial robot, automatic loader, measuring instrument, main shaft of automatic plotting machine, wire winder, main shaft of packaging machine, etc.

Technical Specifications of the GJF Convex Linear Motion Spline (Unit: mm)
Model Nominal Shaft Diameter d0 Outer Diameter D Spline Nut Length L1 Max. Shaft Length L Flange Diameter D1 Mounting Hole Center Distance D2 Flange
Thick
ness H
Counter Sunk Hole Depth h Lubri
cation Hole
Diame
ter d
Counter
Sunk
Hole
Diam
eter d2
Vie
hole
diam
eter
d3
Lubri
cation
hole
position
F
Basic torque rating
Dynamic torque CT (Nm) Static torque COT (Nm)
GJF15 15 0 23 -0.03 0 40 -0.3 300 0 43 -0.2 32 7 4.4 2 8 4.5 13 27 45
GJF20 20 0 30 -0.013 0 50 -0.3 500 0 49 -0.2 38 7 4.4 3 8 4.5 18 64 90
GJF25 25 0 38 -0.016 0 60 -0.3 700 0 60 -0.2 47 9 5 3 10 5.8 21 134 184
GJF30 30 0 45 -0.016 0 70 -0.3 1000 0 70 -0.2 54 10 6 3 11 6.6 25 238 317
GJF32 32 0 48 -0.016 0 70 -0.3 1000 0 73 -0.2 57 10 6 3 12 7 25 238 317
GJF40 40 0 57 -0.019 0 90 -0.3 1200 0 90 -0.2 70 14 7 4 15 9 31 523 670
GJF50 50 0 70 -0.019 0 100 -0.3 1400 0 108 -0.2 86 16 9 4 18 11 34 956 1146
GJF60 60 0 85 -0.022 0 127 -03 1400 0 124 -0.2 102 18 11 4 11 18 45.5 1631 2262
GJF70 70 0 100 -0.22 0 135 -0.3 1400 0 142 -0.2 117 20 13 4 20 14 47.5 2617 3597
GJF85 85 0 120 -0.022 0 155 -0.3 1400 0 168 -0.2 138 22 13 5 20 13 55.5 4139 5635

YiGong is a primary convex linear motion spline manufacturer based in China. Our wide variety of products includes linear motion spline, linear motion bushing, precision ball screw, water jet cutting machine, and much more.

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  • GJH Convex Linear Motion Spline The GJH convex linear motion spline is suitable for use in spindle of spot welding machine, tool post, indexing shaft, arms of industrial robot, automatic loader, measuring instrument, wire winder, main shaft of automatic plotting machine, and main shaft of packaging machine, etc.
  • GJZG Concave Linear Motion Spline As the GJZG concave linear motion spline can achieve zero clearance, balls are capable of transmitting the toque generated from the spline nut or the spline shaft evenly and smoothly. Should the spline shaft be pulled out of the nut, the ball will stay in its place, due to the use of retainers.