TORQUE RESISTANT SPLINE SHAFTS FOR SSP, SPF AND SPR SPLINE NUTS:

PDF Catalogue of Linear Bearings

Induction hardened steel shafts for torque resistant ball bushings.

Two levels of precision are available:

Types SP..S and SP..A are available in the sizes and lengths shown in the dimension list below. This is a ground bar with gothic arch profiles to accept the balls. Three pre-loads are available. None, Light (Suffix T1) & Medium (Suffix T2). Tolerance for twist is 13 microns per 100mm of shaft (standard) and 6 microns per 100mm of shaft (precision). Straightness values are given in the table below per 1000mm. Also available in stainless steel up to 25mm diameter.

Type SP..C which is available from 20mm to 50mm nominal diameters. This is a drawn shaft. To order this type use Part no SP --C x .... where "--" is the nominal diameter and "...." is the length in mm. Straightness tolerance is 1mm per 1000mm. Twist tolerance is 100 microns per 100mm of shaft. The load capacity for the drawn spline shafts is 70% of the values for the ground spline shafts. Use with Torque Resistant Bushes.

PDF data sheet

spline shaft SP

	Part Number	Diameter (d) (h7 tolerance)	Max length (mm)	Straightness (µm/m)		Pre-load (µ)
	Part Number	Diameter (d) (h7 tolerance)	Max length (mm)	Standard	Precision	None	Light	Medium
Ground	SP06S	6	400	160	110	-2/+1	-6/-2	-
	SP08S	8	500	160	110	-2/+1	-6/-2	-
	SP10S	10	630	100	65	-3/+1	-9/-3	-
	SP14S	13	630	75	50	-3/+1	-9/-3	-13/-7
	SP16S	16	630	75	50	-3/+1	-9/-3	-13/-7
	SP20S	18.2	2000	170	120	-3/+1	-9/-3	-20/-12
	SP20A	20	2000			-4/+2	-12/+4	-20/-12
	SP25S	23	2000	170	120	-4/+2	-12/+4	-20/-12
	SP25A	25	2000			-4/+2	-12/+4	-20/-12
	SP30S	28	2000	170	120	-4/+2	-12/+4	-20/-12
	SP30A	30	2000			-4/+2	-12/+4	-20/-12
	SP40S	37.4	2000	120	80	-6/+3	-18/-6	-30/-18
	SP40A	40	2000			-6/+3	-18/-6	-30/-18
	SP50S	47	2000	120	80	-6/+3	-18/-6	-30/-18
	SP50A	50	2000			-6/+3	-18/-6	-30/-18
	SP60S	56.5	2000	90	60	-6/+3	-18/-6	-30/-18
	SP60A	60	2000			-6/+3	-18/-6	-30/-18

	Part Number	Diameter (d) (±0.08 for C type)	Max length (mm)	Straightness (µ/m)		Pre-load (µ)
	Part Number	Diameter (d) (±0.08 for C type)	Max length (mm)	Standard	Precision	None	Light	Medium
Drawn	SP20C	18.2	4000	1000µ (1mm)	-	-	-	-
	SP25C	23	4000	1000µ	-	-	-	-
	SP30C	28	4000	1000µ	-	-	-	-
	SP40C	37.4	4000	1000µ	-	-	-	-
	SP50C	47	4000	1000µ	-	-	-	-