Support Units for Ball Screw, Support Side Square Type

Brand :

MISUMI

Caution

Product Description

This is an economy item, The price is cheaper than the MISUMI standard product.

Product Overview

Dimensional Drawing

■Material Table

Type	Material	Surface treatment
Type	①	①
C-TEF	S45C equivalent	Black oxide
*C-TEFHR	S45C equivalent	Low Temperature Black Chrome Plating

(*)Marked Low Temperature Black Chrome Plating is under preparation. Currently special order request can be accepted under the condition of MOQ.

Support Unit Rated Load

Bearing No.	Basic Dynamic Rated Load (N)	Basic Static Rated Load (N)
3	440	150
4	910	340
5	910	340
6	1580	580
8	1580	580
10	2310	960
12	3190	1380
15	3920	1980
20	8960	4620
25	9800	5500

Specification Table

Part Number		Axis Diameter d	L	B	H	Shaft Height h	B₁	H₁	P	V	d₁	d₂	ℓ	Retaining ring
Type	No.
C-TEF (Black oxide) *C-TEFHR (Low Temperature Black Chrome Plating)	3	3	10	34	19	10	18	7	26	10	4.5	-	-	Thickness 0.25
	4	4								13				Thickness 0.25
	5			36	21	11	20	8	28
	6	6	12	42	25	13	18	20	30	17	5.5	9.5	11	STWN6
	8		14	52	32	17	25	26	38		6.6	11	12
	10	8	20	70	43	25	36	24	52	22	9	－	－	STWN8
	12	10								26				STWN10
	15	15		80	49	30	41	25	60	32				STWN15
	20	20	26	95	58		56		75	47	11			STWN20

(1), (2), and (3) are separate components. Please keep them properly.

(*)Marked Low Temperature Black Chrome Plating is under preparation. Currently special order request can be accepted under the condition of MOQ.

Product Feature

Suface treatment comparison:
The black oxide type is cost-effective and can resist corrosion if protective oil is applied regularly.
If it is used in a high-humidity environment or requires less maintenance, it is recommended to use the low-temperature black chrome type.

Specification	Black Oxide	Low-Temperature Black Chrome
Method	Chemical conversion on steel surface forming black oxide layer	Electroplating black chrome at low temperature, usually with Ni underlayer.
Surface Quality	Matte black, prone to fading with abrasion.	Deep black, smooth, durable color, high aesthetics.
Coating Thickness	Very thin, ~0.5–1.5 μm, almost no dimensional change.	0.3–2 μm, thicker if Ni underlayer is applied.
Corrosion Resistance	Moderate, depends on oil layer; not suitable for long-term outdoor use.	Very high, withstands humid/salty environments, long coating life.
Advantages	Low cost, fast, no dimensional change, easy to reprocess.	Superior corrosion resistance, hard, durable color, high aesthetics.
Disadvantages	Poor corrosion resistance without maintenance, easy fading.	Complex process, higher cost.

Usage Method

Precautions

Example of Use