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NSK Ball Screws for High-Load Drive

HTF Type

Outline drawing

40° 40° 40° 40°
PCD W PCD W
4-φ X drill Seal (both ends) 4-φ X drill

V max.
φA
φ dr
φd

φ Dg6
V max.
V max.

protDruhd(ienngcpoamrtp) asses protDruhd(ienngcpoamrtp) asses
φ
φ

U max. B Without seal U max. U max.
T
Q (oil hole)

T M
L

Nut model

HTF Type Specifications

Lead Shaft dia. Root dia. Effective ball Basic load rating (kN)
(mm) (mm) (mm)
Model No. d dr turns Nut model Dynamic Static
r Turns × Ca C0a
HTF3210-5 Circuits D A B
HTF3610-5 10
HTF4010-7.5 10 32 25.6 2.5×2 1 71 169 58 92 18
HTF4510-7.5 10 62 96 18
HTF4510-10 10 36 29.6 2.5×2 1 76.9 191 66 100 18
HTF5010-7.5 10 70 104 18
HTF5010-10 10 40 33.6 2.5×3 2 120 344 70 104 18
HTF5510-7.5 10 75 109 18
HTF5510-10 10 45 38.6 2.5×3 2 127 386 75 109 18
HTF3612-5 10 80 114 18
HTF4012-7.5 12 45 38.6 2.5×4 3 162 514 80 114 18
HTF4512-7.5 12 66 100 22
HTF5012-7.5 12 50 43.6 2.5×3 2 133 435 70 104 22
HTF5012-10 12 72 106 22
HTF5512-7.5 12 50 43.6 2.5×4 3 170 580 77 111 22
HTF5512-10 12 77 111 22
HTF6312-7.5 12 55 48.6 2.5×3 2 139 477 82 116 22
HTF6312-10 12 82 116 22
12 55 48.6 2.5×4 3 178 636 92 126 22
92 126 22
36 29 2.5×2 1 90 228

40 33 2.5×3 2 147 422

45 38 2.5×3 2 156 473

50 43 2.5×3 2 164 525

50 43 2.5×4 3 210 700

55 48 2.5×3 2 171 586

55 48 2.5×4 3 220 781

63 56 2.5×3 2 181 668

63 56 2.5×4 3 232 891

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.

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