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Nut cooling ball screws
nNut cooling ball screws: dimension chart Rc1/8 45 22.5 45 Rc1/8
(for coolant) 22.5 (for coolant)
lSingle nut cooling ball screws (for HMD series, nut type: EM)
4-through hole
(for coolant)
φ D1 6-φ X drill thru
φd φY c'bore, Z depth
φ D1 PCD W
φd
L3 45 22.5 Rc1/8
φ D2L2 L4 L3 45 (oil hole)
φ D2
L1 W
106
H 112
118
• Option symbols "NC" are included in the assembly part number. (Example : W4012-123ZMNCX-C5Z20) 150
Applicable dimensions for HMD Series Unit: mm
YZ
Model No. Shaft dia. Lead D1 D2 H L1 Nut dimensions X 17.5 11
dl L2 L3 L4 11
17.5 11
EM4016-4E 16 166 140.5 7.5 18 11
17.5 11
EM4020-6E 40 20 86 128 96 156 130.5 7.5 18 11 26 17.5
EM4025-6E 25 188 162.5 7.5 18 18
45 6-φ X drill thru
EM4030-6E 30 219 193.5 7.5 18 φY c'bore, Z depth
EM4516-4E 16 166 140.5 7.5 18 PCD W1
EM4520-6E 45 20 92 134 102 156 130.5 7.5 18
EM4525-6E 25 188 162.5 7.5 18
EM5016-4E 16 166 140.5 7.5 18
EM5020-6E 50 20 98 140 107 156 130.5 7.5 18
EM5025-6E 25 188 162.5 7.5 18
EM5030-6E 30 219 193.5 7.5 18
EM6316-4E 63 16 122 180 138 176 139 9 28
l Double nut cooling ball screws (tube-type nut, nut type: DFT) 2-Rc1/8 45
(for coolant) 22.5
22.5
4-through hole 4-through hole
2-Rc1/8 (for coolant) (for coolant)
(for coolant)
PCD W2
Rc1/8
(oil hole)
22.5 L3 22.5 45
L2 L4 L3 45
L1 Unit: mm
G
Model No. Shaft dia. Lead Nut dimensions
dl
D1 D2 L1 L2 L3 L4 G W1 X Y Z W2
113 11 17.5 11 73
DFT5010-7.5 10 93 135 303 275 10 18 51
122 14 20 13 78
DFT5012-5 50 12 100 146 279 245 12 22
DFT5016-5 16 100 146 344 306 122 11 17.5 11 80
16 22 55 130 14 20 13 88
137 14 20 13 91
DFT5020-3 20 100 146 327 279 20 28 150 18 26 17.5 93
152 14 20 13 108
DFT5510-5 55 10 102 144 243 215 10 18 54 158 14 20 13 110
172 18 26 17.5 112
DFT6310-7.5 10 108 154 307 275 10 22 58 188 18 26 17.5 134
205 22 32 21.5 136
DFT6312-5 63 12 115 161 279 245 12 22 61
DFT6316-5 16 122 180 350 306
16 28 69
DFT6320-5 20 122 180 407 359 20 28
DFT8010-5 10 130 176 247 215 10 22 66
DFT8012-5
DFT8016-5 80 12 136 182 279 245 12 22 68
DFT8020-5 16 143 204 350 306 16 28 77
28
20 143 204 407 359 20
DFT10012-5 12 160 220 285 245 12 28 82
DFT10016-5
DFT10020-5 100 16 170 243 354 306 16 32 91
20 170 243 411 359 20 32
• Option symbols "NC" are included in the assembly part number. (Example : W5012-123DNC-C5Z10)
nOperating suggestions
If heat impact from the bearing is too great, separate cooling for bearing and surrounding areas is recommended.
For details, please contact NSK.
