Precision Ball Screws Shaft Dia.12 Lead 4/10 Accuracy Grade C5

Brand :

MISUMI

Caution

Product Description

- Precision Ball Screws Shaft Dia.12 Lead 4/10 Accuracy Grade C5 from MISUMI.
- Precision Ball Screws have a shaft diameter of 12 mm and are available in two different lead sizes: 4mm or 10mm.
- The accuracy grade option for this product is C5.
- The overall length of the shaft screw can be customized to fit a range of configurations, from 150mm to 500mm, in 1mm increments.
- The lead twisting direction for this product is right-handed.
- The screw shaft is made of S55C while the nut is made of SCM420.

Economy Precision Ball Screws Shaft Dia.12

FA AutomationLong-lastingPrecision

- Precision Ball Screws with specified shaft diameter and available in multiple lead sizes

- High accuracy grade of C5 for precise and reliable performance

- Customizable overall length within a specified range in 1mm increments

- S55C screw shaft and SCM420 nut for long-lasting strength and wear resistance

- Ideal for high-precision FA automation equipment

Economy Precision Ball Screws Shaft Dia.12

MISUMI Standard

Cheaper Price

Product Variety

3D CAD
3D CAD Support

Product Overview

1. This series of products is the C5 Precision Ball Screw with the shaft diameter of 12 and lead of 4/10.
2. With small backlash of the nut, it has higher precision and lower noise than the rolled Ball Screw, but the motor starting torque will increase.
3. Ball Screw It is more suitable for positioning mechanisms in FA automation equipment.
4. The screw shaft end is machined according to standard specifications. If the shaft end requires alteration, it should be specified according to the catalog.

Product Comparison

	Model No./Specification Example
	Model No.	Accuracy	Shaft Dia.	Lead	Total Length
MISUMI Standard Product	BSS1210-300	C5	12	10	300
C-Value	C-BSSA1210-300
Economy Series	C-KBS1210-300	C5 equivalent^*1

*1 The Economy Series Ground Ball Screw accuracy class is equivalent to C5. See product comparison information for specification differences.

■ Lead Accuracy

【エコノミーシリーズ】中国製　研削ボールねじ　軸径φ12　リード 4/10:関連画像

■ Fluctuation Tolerances

Unit: μm

Accuracy Class	C3		C5
Item	Fluctuation (300) (2)	Fluctuation (2π) (3)	Fluctuation (300) (2)	Fluctuation (2π) (3)
Fluctuation Tolerance	8	6	18	8

(2) Fluctuation for an arbitrary length of 300mm within the effective thread length of the screw shaft
(3) Fluctuation for an arbitrary 1 rotation (2π rad) within the effective thread length of the screw shaft

■ Mounting Part Accuracy

【エコノミーシリーズ】中国製　研削ボールねじ　軸径φ12　リード 4/10:関連画像

Ground Ball Screw

Unit: mm

Model		Lead	Screw Length		(1)(2) Runout Tolerance (Max.)			(3) Runout Tolerance (Max.)			(4)(5) Perpendicularity Tolerance (Max.)			(6) Perpendicularity Tolerance (Max.)			(7) Perpendicularity Tolerance (Max.)			Axial Clearance
Type	Screw Shaft Outer Dia.		Min.	Max.	MISUMI Standard Product (BSS)	C-Value	Economy Series C-KBS	MISUMI Standard Product (BSS)	C-Value	Economy Series C-KBS	MISUMI Standard Product (BSS)	C-Value	Economy Series C-KBS	MISUMI Standard Product (BSS)	C-Value	Economy Series C-KBS	MISUMI Standard Product (BSS)	C-Value	Economy Series C-KBS	MISUMI Standard Product (BSS)	C-Value	Economy Series C-KBS
C-KBS	8	2	100	210	0.011		0.014	0.011		0.014	0.005		0.02 *Reference value	0.01		Not guaranteed	0.012		Not guaranteed	0.005 or less	0.008 or less	0.008 or less
	10	2/4	100	350
	12	4/10	150	500
	15	5/10/20	150	1100	0.012			0.012						0.011			0.015				0.015 or less	0.015 or less
	20	5/10/20	200	1500
	25	5/10/25	300	1500	0.013			0.013						0.013			0.019

(1)・(2) Radial Run-out of bearing mouting surface related to the centerline of screw groove.
　　　　 This measurement item is affected by Total Run-out (8) of the Screw Shaft, and so it must be corrected.
(3)　　　Radial runout of drive component interface surface in relation to screw shaft support axis.
(4)・(5) Perpendicularity of shaft's bearing shoulders in relation to screw shaft support axis.
(6)　　　Perpendicularity of ball nut mounting flange surface (datum) in relation to screw shaft axis.
(7)　　　Radial runout of ball nut body outer circumference in relation to screw shaft axis.

Dimensional Drawing

Dimensional Drawing of Ball Screw (Unit: mm)
Dimensional Drawing 1

Specification Table

Type	Accuracy grade	Screw diameter	Lead	Screw shaft			Nut
Type	Accuracy grade	Screw diameter	Lead	Material	Hardness	Surface Treatment	Material	Hardness	Surface Treatment
C-KBS	C5	12	4·10	Equivalent to S55C	High frequency quenching 58 to 62HRC	-	Equivalent to SCM420	Carburized 58 to 62HRC	-

Part Number of Ball Screw

L
(1mm increments)

Number of cycles

Basic Rated Load

Axial Clearance

Twisting
Direction

Screw support unit (Sold separately)

Type

Screw Shaft O.D.

Lead

C (Dynamic)
kN

C (Static)
kN

Shape

Fixed side model

Support side model

C-KBS

150 to 500

L-61

3 laps

1.8

4.1

0.008
or Less

Right

Square Type

C-TEK10

C-TEF10

Round type

C-TFK10

C-TFF10

2.8 laps

3.5

Square Type

C-TEK10

C-TEF10

Round type

C-TFK10

C-TFF10

The Y dimension must be larger than the full length of the nut kgf=N×0.101972

Alterations

■ Ball Screw Detailed dimension of alteration KC··KLC keyway

Shaft Dia.	b		t
Shaft Dia.	Reference dimension	Tolerance (N9)	Reference dimension	Tolerance
6 to 7	2	-0.004 -0.029	1.2	+0.1 0
8 to 10	3	-0.004 -0.029	1.8
11 to 12	4	0 -0.03	2.5
13 to 17	5		3.0
18 to 20	6		3.5

■ Ball Screw Detailed dimension of incomplete quenching range
Dimensional Drawing 5

Screw diameter	Incomplete quenching range ℓ (max)
φ8, φ10	5mm
φ12, φ15	10mm
φ20, φ25	15mm

Screw Shaft Runout Tolerance

Type	Screw Shaft O.D.	Runout tolerance G (Max.)											Incomplete Hardened Area (ℓ)
Type	Screw Shaft O.D.	~125	126~200	201~315	316~400	401~500	501~630	631~800	801~1000	1001~1250	1251~1600	1601~2000	Incomplete Hardened Area (ℓ)
E-TBS	4	0.060	0.075	-	-	-	-	-	-	-	-	-	5
E-TBS	6	0.075	0.075	-	-	-	-	-	-	-	-	-	5
C-TBSE C-TBSB	8	0.100	0.140	0.210	0.270	-	-	-	-	-	-	-	10
	10	-	0.120	0.160	0.210	0.270	0.350	-	-	-	-	-
	12	-	0.120	0.160	0.210	0.270	0.350	0.480	-	-	-	-
	15	-	0.110	0.130	0.160	0.200	0.250	0.320	0.420	0.550	-	-
	20	-	0.110	0.130	0.160	0.200	0.250	0.320	0.420	0.550	0.730	0.730	15
	25	-	0.110	0.110	0.130	0.160	0.190	0.230	0.300	0.380	0.500	0.690	15
	32	-	-	0.110	0.130	0.160	0.190	0.230	0.300	0.380	0.500	0.690	20
E-KBS	4	0.050	-	-	-	-	-	-	-	-	-	-	5
E-KBS	6	0.050	0.050	-	-	-	-	-	-	-	-	-
C-KBS	8	0.060	0.075	0.100	-	-	-	-	-	-	-	-
	10	0.055	0.065	0.080	0.100	-	-	-	-	-	-	-
	12	-	0.065	0.080	0.100	0.120	-	-	-	-	-	-	10
	15	-	0.060	0.070	0.080	0.095	0.110	0.140	0.170	0.210	-	-	10
	20	-	0.060	0.070	0.080	0.095	0.110	0.140	0.170	0.210	0.270	-	15
	25	-	-	0.060	0.070	0.080	0.090	0.100	0.130	0.170	0.210	-	15
E-KLR	4	0.050	0.050	-	-	-	-	-	-	-	-	-	5
	8	0.065	0.075	0.100	-	-	-	-	-	-	-	-
	10	0.065	0.065	0.080	0.100	-	-	-	-	-	-	-

Product Features

1. Drawing-based machining is no longer required, saving the time for drawing.
2. When Ball Screw used in combination with Economy series support unit, it has a better effect.
3. The total length of screw shaft can be specified in 1 mm increments. With abundant shaft end specifications, it is possible to specify alterations for different applications.

Example of Use

This series of Ball Screw products is more suitable for positioning mechanisms in FA automation equipment.
Example of Use 1

Characterized by small runout, MISUMI standard products are suitable for machining equipment.
Example of Use 2

Precautions

■ Selection and Precautions for Use of Ball Screw
● The noise value of the Ball Screw after assembly is not guaranteed.
● Although lithium soap-based grease has been applied at the factory, it is required to apply new grease every 2~3 months as standard after receiving the goods, otherwise the normal use will be affected. For details, see Catalog P687.
● In operation, if there is too much noise or sharp and harsh sound, please make sure that the installation accuracy of the Ball Screw and the specifications of peripheral components such as motors and couplings are appropriate.
Do not let the nut exceed the movement range of the Ball Screw nut, or screw out of the screw shaft, otherwise the ball will fall off and the ball cycling parts will be damaged.
● Ball Screws and nuts placed with an inclination may fall due to weight. Please be careful.
● This product is a machined type, so there will be knife patterns and color difference in its appearance. Small scratches or color changes without affecting the use and main function are of a normal phenomenon. Please feel free to use.

■ Precautions of the Ball Screw and peripheral parts design and assembly
The Ball Screw is a component that only bears axial load. If it is subjected to radial load or moment load, poor sliding, vibration or abnormal noise may occur, shortening its service life.
The reason that the Ball Screw bears radial load and moment load is the axis deviation and parallelism error of the surrounding parts. Therefore, it is necessary to correctly design and assemble the peripheral parts of the Ball Screw to prevent errors.
● Axis deviation of Ball Screw and support unit (Fig. 1)
- Axis deviation is the deviation of the Ball Screw fixed by the fixed side support unit and the bearing of the supporting side support unit.
-The allowable value of the axis deviation is 20μ or less (reference value)
●Parallelism between Ball Screw and linear guide (Diagram 2)
- Parallelism error refers to the inclination of the Ball Screw in the up-down or left-right direction with respect to the reference of the linear guide.
-The allowable value of inclination is below 1/2000 (Diagram 3)
●Precautions of assembly
If you notice abnormal noises during the operation of the Ball Screw or jamming during movement after assembly, please loosen the connections of the parts before proceeding. Adjust and reassemble after moving smoothly.
- Error in the left and right direction of the support unit (Fig. 1)
- Parallel error of linear guide and Ball Screw (Fig. 2)
- Fixing of workbench and nut bracket
- Fixing of Ball Screw nut and nut bracket

・Removal of nut is prohibited	・No impact on the nut	・Be careful of falling due to weight


・Checking for reverse action	・Pay attention to intrusion of foreign objects	・Nut overstroke is prohibited

Related Products

Square support unit
Fixed side Ball Screw model	Support side Ball Screw model
C-TEK10	C-TEF10

Round support unit
Fixed side model	Support side model
C-TFK10	C-TFF10

Brand Introduction

MISUMI, the head office company, has been providing customers with various high-quality parts such as automation parts, mold parts, electronic parts, tool• consumables, etc. quickly and accurately since its establishment in Japan in 1963. By compiling product catalogs independently and establishing a marketing system for direct sales of products, a low-cost business operation mode has been created, and by making annual product plans according to customers' opinions and requirements, MISUMI brand-name products with high quality level have been continuously developed. MISUMI established MISUMI Precision Machinery Co., Ltd. in China in June 2003, and then changed its name to MISUMI (China) Precision Machinery Trading Co., Ltd. in June 2007, with its headquarters in Shanghai. Since the beginning of the stamping die standard parts business, the businesses of FA standard parts, plastic die standard parts and machining tools have been officially started successively, and the rapid development of MISUMI in China has won the full support of customers. China's manufacturing industry has unlimited prospects, which is why China's manufacturing industry market has become one of the most competitive industries in the world. MISUMI's business philosophy came into being - the key to the future development of China's manufacturing industry lies in cost competitiveness, "quality" and "time".