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NSK Ball Screws for High-Load Drive

HTF-SRC Type

Outline drawing

4-φ X drill 40°
40°

PCD W Seal (both ends)

V max.
V max.

φA
φ dr
φd
φD

protDruhd(ienngcpoamrtp)assesφ

40° 40° Q (oil hole) Without seal
U max. U max.
B T2 T2 M
T1 L

Nut model

HTF-SRC Type Specifications

Lead Shaft dia. Root dia. Effective ball Basic load rating (kN)
(mm) (mm) (mm)
Model No. turns Nut model Dynamic Static
r d dr Turns × Circuits Ca C0a
HTF-SRC5014-7.5 D A
HTF-SRC5016-7.5 14 50 41.6 2.5×3 1 211 623
HTF-SRC6316-7.5 16 50 39 2.5×3 1 306 818 80 114
HTF-SRC6316-10 16 63 52 2.5×3 1 343 1 050 95 129
HTF-SRC6316-10.5 16 63 52 2.5×4 2 439 1 410 105 139
HTF-SRC6316-14 16 63 52 3.5×3 1 450 1 450 105 139
HTF-SRC8016-10.5 16 63 52 3.5×4 2 576 1 930 105 139
HTF-SRC8016-14 16 80 69 3.5×3 1 501 1 870 105 139
HTF-SRC6320-7.5 16 80 69 3.5×4 2 642 2 490 120 154
HTF-SRC6320-10 20 63 49 2.5×3 1 457 1 280 120 154
HTF-SRC8020-10.5 20 63 49 2.5×4 2 586 1 710 117 157
HTF-SRC10020-10.5 20 80 66 3.5×3 1 671 2 300 117 157
HTF-SRC10020-14 20 100 86 3.5×3 1 749 2 910 130 170
HTF-SRC12020-7.5 20 100 86 3.5×4 2 959 3 890 145 185
HTF-SRC12020-10 20 120 106 2.5×3 1 621 2 550 145 185
HTF-SRC6325-10.5 20 120 106 2.5×4 2 795 3 400 173 213
HTF-SRC8025-7.5 25 63 49 3.5×3 1 600 1 770 173 213
HTF-SRC10025-10.5 25 80 63 2.5×3 1 632 1 960 117 157
HTF-SRC10025-14 25 100 83 3.5×3 Ⅰ 964 3 430 145 185
HTF-SRC12025-10.5 25 100 83 3.5×4 Ⅱ 1 230 4 580 159 199
HTF-SRC12025-14 25 120 103 3.5×3 Ⅰ 1 040 4 200 159 199
25 120 103 3.5×4 Ⅱ 1 330 5 600 173 213
173 213

Remarks: 1. The ball nut length with no seals is shorter by M than that of a ball nut with seals.
2. Please consult NSK if load exceeds the allowable axial load (Fa max.).
3. The allowable axial load (Fa max.) is determined in accordance with the mounting conditions of ball screws recommended by NSK.
Refer to page 34 for the mounting conditions. If your mounting conditions differ from those provided, please consult NSK.
4. The right hand screw is the standard. For specifications on left hand screws, contact NSK.