Deep hardened and ground steel shafts for ball screws

NI-WP, NI-WPZ

Shaft diameter d (*)	Weight per meter	Shaft code number	Standard length	Maximum hardening depth Rht DIN 6773	Standard tolerance ISO h7
mm	Kg/m		mm	mm	µm
20	2.47	NI-WP20	6000	4.0	0 /-21
25	3.85	NI-WP25	6000	4.0	0 /-21
30	5.55	NI-WP30	6000	5.0	0 /-21
35	7.55	NI-WP35	6000	6.0	0 /- 25
40	9.87	NI-WP40	6000	6.0	0 /- 25
45	12.50	NI-WP45	6000	6.0	0/ - 25
50	15.40	NI-WP50	6000	6.0	0/ - 25
60	22.20	NI-WP60	6000	6.5	0 /- 30
70	30.20	NI-WP70	6000	6.5	0/ - 30
80	39.50	NI-WP80	6000	6.5	0/ - 30
90	49.92	NI-WP90	6000	7.0	0/ - 35
100	96.28	NI-WP100	6000	7.0	0/ - 35
110	74.56	NI-WP110	6000	7.0	0 /- 35
120	88.73	NI-WP120	6000	7.0	0 /- 35
125	96.28	NI-WP125	6000	7.5	0/ - 40
130	104,14	NI-WP130	6000	7.5	0/ - 40
140	120,78	NI-WP140	6000	7.5	0/ - 40
150	138,65	NI-WP150	6000	7.5	0/ - 40
160	157,75	NI-WP160	6000	7.5	0/ - 40

By request we can supply shaft diameters in no listed dimesions with special lenghts and tolerances up to 9 meters length
Surface hardness: 60-64 HRC
Surface roughness: max Ra = 0.25 microns
Lengths tolerances: ±200 mm
Straightness: max 0.4 mm/meter
Roundness: max. 1/2 from the tolerance's interval of diameter measured as radial deviation
Steel grades Ck55; Cf53; 42CrMo4V; 50CrMo4V
On request: other steel grades

Shaft diameter d (*)	Shaft diameter d (*)	Weight per meter of length	Shaft code number	Standard length	Maximum hardened depth Rht DIN 6773	Tolerance Class "L"	Tolerance Class "L"	Standard tolerance ISO h7	Standard tolerance ISO h7
mm	inch	kg/m		inch	inch	inch	mm	inch	mm
19.05	¾	2.24	NI-WPZ 3/4	236.25	0.157	-0.0005/-0.0010	-0.0127/-0.025	0/-0.0008	0/-0.021
25.4	1	3.97	NI-WPZ 1	236.25	0.157	-0.0005/-0.0010	-0.0127/-0.025	0/-0.0008	0/-0.021
31.75	11/4	6.22	NI-WPZ 1¼	236.25	0.236	-0.0005/-0.0010	-0.0127/-0.025	0/-0.00010	0/-0.025
38.10	11/2	8.95	NI-WPZ 1½	236.25	0.236	-0.0006/-0.0011	-0.015/-0.028	0/-0.0010	0/-0.025
50.8	2	15.91	NI-WPZ 2	236.25	0.236	-0.0006/-0.0013	-0.015/-0.033	0/-0.0012	0/-0.030
57.15	2 1/4	20.13	NI-WPZ2¼	236.25	0.236	-0.0007/-0.0015	-0.018/-0.038	0/-0.0012	0/-0.030
63.5	2 1/2	24.85	NI-WPZ 2½	236.25	0.256	-0.0007/-0.0015	-0.018/-0.038	0/-0.0012	0/-0.030
76.2	3	35.78	NI-WPZ 3	236.25	0.256	-0.0008/-0.0017	-0.020/-0.043	0/-0.0012	0/-0.030
88.925	3 1/2	48.70	NI-WPZ 3½	236.25	0.276	-0.0010/-0.0020	-0.025/-0.051	0/-0.0014	0/-0.035
101.6	4	63.61	NI-WPZ 4	236.25	0.295	-0.0012/-0.0024	-0.030/-0.061	0/-0.0014	0/-0.035
127	5	99.40	NI-WPZ 5	236.25	0.295	-0.0012/-0.0024	-0.030/-0.061	0/-0.0016	0/-0.040