Description
STS – INVOLUTE SPLINE CUTTERS (M35 – HSS)
Our brand of STS spline cutters – Formally “Superior Tool Service” were manufacturing & operating in Australia since the 1970’s.
Our spline cutters are manufactured with the best, suitable High-Speed Steels; ground M35- HSS. They have all been machine relieved ground for correct clearance angles.
(So, we do not sell “the cheapies” of soft steels & guessing if they will do?)
“involute”, meaning that are not just straight sides, they have angles ground to suit the circular dimensions.
NOTE: Our standards in Australia have Bores of 1” with ¼” keyway.
(unless custom ordered as required)
Contact us, to make it easy for help with selection or get custom cutters made easily.
Range of Cutters for Involute SPLINE CUTTERS
Cutter Number Cuts splines from;
No. 1 — 135 splines to rack
No. 2 — 55-134 splines
No. 3 — 35-54 splines
No. 4 — 26-34 splines
No. 5 — 21-25 splines
No. 6 — 17-20 splines
No. 7 — 14-16 splines
No. 8 — 12-13 splines
(Example; Involute spline cutter – 12/24DP 30° PA No.4 cuts 30 splines )
Involute Spline Cutters are supplied in either of the two systems; MODULE (Metric/Pitch) or DP (Diametrical Pitch) – (Imperial).
MODULE spline cutters; DIN 8452 & DIN 8450 are most popular Involute Spline Cutters are supplied to cut any number of splines required for splines,
in a set of 8 x numbers.
Most common spline cutters have 30° PA (Pressure Angle).




