Model Number Coding｜Model Number｜Ball Screw｜Product Information

The model number confi guration for ball screws diff ers depending on the type. Refer to the corresponding confi guration example shown in Table 1 to Table 3.
THK can also provide shaft end shapes matched to support units. These can also be denoted in the symbols, which should be used for this purpose.

Precision Ball Screw Types and Sample Model Number Confi gurations

Table 1

	Model No.		Shaft end shape	Model number coding
Precision	SBN-V, SBK, SBKN, SDAN-V, SDA-V, HBN-V/HBN-K/ HBN-KA/HBN, SBKH, BIF-V, BNFN-V/BNFN, MDK, MBF, BNF-V/BNF, DIK, DKN, BLW, DK, WHF, BLK, WGF, BNT		Fixed side: H, J Supported side: K	1
	Finished shaft ends	BNK	Y	2
	Unfi nished shaft ends A	MBF, MDK, BNF, BIF	Fixed side: H, J Supported side: K	3
	Unfi nished shaft ends B	BNF, BIF		3
	Rotary ball screw	BLR, DIR		4
	Ball screw/spline	BNS-V, BNS-A, BNS, NS-V, NS-A, NS	ー	5

Rolled Ball Screw Types and Sample Model Number Confi gurations

Table 2

	Model No.		Shaft end shape	Model number coding
Rolled	Ball screw nut and screw shaft combination products	JPF, BTK-V, MTF, BLK, WTF, CNF, BNT	Fixed side: H, J Supported side: K	6
	Rotary ball screw	BLR		7
	Standalone screw shafts	TS		8
	Standalone ball screw nuts	BTK-V, BLK, WTF, CNF, BNT, BLR	ー	8

Support Unit, Nut Bracket, and Lock Nut Types and Sample Model Number Confi gurations

Table 3

Model No.		Shaft end shape	Model number coding
Support unit	EK, BK, FK, EF, BF, FF	ー	9
Nut brackets for BNK	MC	ー
Lock nut	RN	ー

1. Precision Ball Screw

Model

● Models SBN-V, SBK, SBKN, SDAN-V, SDA-V, HBN-V/HBN-K/HBN-KA/HBN, SBKH, BIF-V, BNFN-V/BNFN, MDK, MBF, BNF-V/BNF, DIK, DKN, BLW, DK, WHF, BLK, WGF, and BNT

¹
The ball nut flange faces the fixed side unless otherwise specified.
If desiring the flange to face the supported side, add symbol G in the end of the ball screw model number when placing an order.
²
See Recommended Shapes of Shaft Ends-Shape H and J and Recommended Shapes of Shaft Ends- Shape K
³
See Contaminaton Protection

2. Precision Ball Screw Finished Shaft Ends

Model

● Model BNK

Note: Refer to the corresponding model number

3. Precision Ball Screw Unfi nished Shaft Ends

Model

● Models BIF, MDK, MBF, and BNF

Note: Refer to the corresponding model number

4. Rotary Ball Screw

Model

● Models BLR and DIR

5. Ball Screw/Spline

Model

● Models BNS-V, BNS-A, BNS, NS-V, NS-A, and NS

6. Rolled Ball Screw

Model

● Models BTK-V, MTF, BLK, WTF, CNF, and BNT (Rolled)

● Combination of the Ball Screw Nut and the Screw Shaft

¹
The ball nut flange faces the fi xed side unless otherwise specified.
If desiring the flange to face the supported side, add symbol G at the end of the ball screw model number when placing an order.