SFM

Nominal Model Code of Ball Screw :

SFU R 025 05 T4 D G C5 - 600 - P1 - B2 + N3 N3

【SFU】Nominal Model

S:

• S: Single nut
• D: Double nut
• O: OFF set double nut

F

• F: With Flange
• C: Without Flange

U

• NI : NI type nut
• NU : NU type nut
• H : H type nut
• A : A type nut
• NH : NH nut (A solution for slide table)
• Y : Y type nut
• V : V type nut
• U : DIN nut 
• M : M type nut
• K : K type nut

【R】Threading Direction

• R: Right
• L: Left

【025】Nominal Diameter

• Unit : mm

【05】Lead

• Unit : mm

【T4】Number of Turns

• Turn : T : 1
• A : 1.5 ( or 1.7/1.8 )
• B : 2.5/2.8
• C : 3.5
• D : 4.8
• ex : ( 2.5 ╳ 2 = B2 )

【D】Flange Type

• N: Not cutting
• S: Single cutting
• D: Double cutting

【G】Product Code

• G: Ground
• F: Rolled

【C5】Accuracy Grade

• C0, C1, C2, C3, C5, C7, C10

【600】Overall Length of Shaft

• Unit : mm

【P1】Axial Clearance and Preload Value

• P0, P1, P2, P3, P4

【B2】Number of Nut

(Leave blank if only one nut is required)

Ex : Install two nuts on a shaft B2

【N3】Nut Surface Treatment:

• S: Standard
• N5: Chrome
• N1: Hard Chrome Plating
• P: Phosphating
• N3: Nickel Plating
• N4: Raydent
• N5: Chrome Plating

【N3】Shaft Surface Treatment:

• S: Standard
• B1: Black Oxidation
• N1: Hard Chrome Plating
• P: Phosphating
• N3: Nickel Plating
• N4: Raydent
• N5: Chrome Plating

※No symbol required when plating is not needed.