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Internal circulation screw

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Internal circulation screw SFU България

Internal circulation design saves space

No gap, high rigidity, small driving torque, and can control micro feed within 0.1μm

ominal Model Threading Direction Number of Turns (Turn-Row) Product Code
S S:Single nut R:Right Turn:T:1 G:Ground
D:Double nut L:Left A:15(or 1.7/1.8) F: Rolled
O: OFF set double nut B:25/2.8
F F:With flange C:3.5
C:Without flange Nominal Diameter D:4.8 Accuracy Grade
U NI:NI type nut Unit:mm ex:(25x2=B2) CO,C1,C2,C3,C5,C7,C10
NU:NU type nut
H:H type nut
A:A type nut Lead Flange Type Overall Length of Shaft
NH:NH nut(A solution for slide table) Unit:mm N:Not cutting Unit:mm
Y:Ytype nut S:Single cutting
V:V type nut D: Double cutting
U:DIN nut
M:M type nut
K:K type nut
Axial Clearance and Preload Value Number of Nut
PO,P1,P2, P3,P4 (Leave blank if only one nut is required)Ex:Install two nuts on a shaft B2
Nut Surface Treatment Shaft Surface Treatment
S:Standard S:Standard
B1:Black Oxidation B1:Black Oxidation
N1:Hard Chrome Plating N1:Hard Chrome Plating
P:Phosphating P:Phosphating
N3:Nickel Plating N3: Nickel Plating
N4: Raydent N4:Raydent
N5:Chrome Plating N5:Chrome Plating

Internal circulation screw SFU supplier

Internal circulation screw SFU details

Model No. d I Da Dimension Load Rating K kgf/um
D A B L W H X Q n Ca(kgf) Coa(kgf)
YS-SFNU01605-4 16 5 3.175 28 48 10 45 38 40 5.5 M6 1x4 1380 3052 32
YS-SFNU01610-3 10 3.175 28 48 10 57 38 40 5.5 M6 1x3 1103 2401 26
YS-SFNU02005-4 20 5 3.175 36 58 10 51 47 44 6.6 M6 1x4 1551 3875 39
YS-SFNU02505-4 25 5 3.175 40 62 10 51 51 48 6.6 M6 1x4 1724 4904 45
YS-SFNU 02510-4 10 4.762 40 62 12 80 51 48 6.6 M6 1x4 2954 7295 50
YS-SFNU03205-4 32 5 3.175 50 80 12 52 65 62 9 M6 1x4 1922 6343 54
YS-SFNU 03210-4 10 6.35 50 80 12 85 65 62 9 M6 1x4 4805 12208 61
YS-SFNU04005-4 40 5 3.175 63 93 14 55 78 70 9 M8 1x4 2110 7988 63
YS-SFNU04010-4 10 6.35 63 93 14 88 78 70 9 M8 1x4 5399 15500 73
YS-SFNU05010-4 50 10 6.35 75 110 16 88 93 85 11 M8 1x4 6004 19614 85
YS-SFNU06310-4 63 10 6.35 90 125 18 93 108 95 11 M8 1x4 6719 25358 99
YS-SFNU08010-4 80 10 6.35 105 145 20 93 125 110 13.5 M8 1x4 7346 31953 109
YS-SFU01204-4 12 4 2.5 24 40 10 40 32 30 4.5 1x4 902 1884 26
YS-SFU01604-4 16 4 2.381 28 48 10 40 38 40 5.5 M6 1x4 973 2406 32
YS-SFU02004-4 20 4 2.381 36 58 10 42 47 44 6.6 M6 1x4 1066 2987 38
YS-SFU02504-4 25 4 2,381 40 62 10 42 51 48 6.6 M6 1x4 1180 3795 43
YS-SFU02506-4 6 3.969 40 62 10 54 51 48 6.6 M6 1x4 2318 6057 47
YS-SFU02508-4 8 4.762 40 62 10 63 51 48 6.6 M6 1x4 2963 7313 49
YS-SFU03204-4 32 4 2.381 50 80 12 44 65 62 9 M6 1x4 1296 4838 51
YS-SFU03206-4 6 3.969 50 80 12 57 65 62 9 M6 1x4 2632 7979 57
YS-SFU03 208-4 8 4.762 50 80 12 65 65 62 9 M6 1x4 3387 9622 60
YS-SFU04006-4 40 6 3.969 63 93 14 60 78 70 9 M6 1x4 2873 9913 66
YS-SFU04 008-4 8 4.762 63 93 14 67 78 70 9 M6 1x4 3712 11947 70
YS-SFU05020-4 50 20 7.144 75 110 16 138 93 85 11 M8 1x4 7142 22588 94
YS-SFU06 320-4 63 20 9.525 95 135 20 149 115 100 13.5 M8 1x4 11444 36653 112
YS-SFU08020-4 80 20 9.525 125 165 25 154 145 130 13.5 M8 1x4 12911 47747 138
YS-SFU10020-4 100 20 9.525 150 202 30 180 170 155 17.5 M8 1x4 14303 60698 162

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