Precision Ball Screws Shaft Dia.20 Lead 5/10/20 Accuracy Grade C5
Brand :
MISUMI
Caution
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Product Description
- Precision Ball Screws Shaft Dia.20 Lead 5/10/20 Accuracy Grade C5 from MISUMI.
- Precision Ball Screws have a shaft diameter of 20 mm and are available in three different lead sizes: 5mm, 10mm or 20mm.
- 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 200mm to 900mm, 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 20 Lead
Precision Ball ScrewAccuracy Grade C5Customizable Lengths
- High accuracy grade C5 ensures superior precision
- Shaft diameter and lead options available in multiple sizes
- Customizable screw lengths within a specified range in 1mm increments
- Made of durable S55C screw shaft and SCM420 nut material
- Ideal for FA automation equipment positioning mechanisms
MISUMI Standard
Cheaper Price
Product Variety
3D CAD Support
Product Overview
1. This series of products is the C5 Precision Ball Screw with the shaft diameter of 20 and lead of 5/10/20.2. 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. 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 | BSS2010-300 | C5 | 20 | 10 | 300 |
| C-Value | C-BSSA2010-300 | ||||
| Economy Series | C-KBS2010-300 | C5 equivalent*1 | |||
■ Lead Accuracy
■ 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
Ground Ball Screw
| 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 | |||||||||||||||
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)
The Y dimension must be larger than the full length of the nut kgf=N×0.101972
Specification Table
| Type | Accuracy grade | Screw diameter | Lead | Screw shaft | Nut | ||||
 Material |  Hardness |  Surface Treatment | Material | Hardness | Surface Treatment | ||||
| C-KBS | C5 | 20 | 5·10·20 | Equivalent to S55C | High frequency quenching 58 to 62HRC | - | Equivalent to SCM420 | Carburized 58 to 62HRC | - |
| Part Number of Ball Screw |  L(1mm increments) | Y | 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 | 20 | 05 | 200 to 1500 | L-82 | 4 laps | 4.3 | 10.3 | 0.015 or Less | Right | Square Type | C-TEK15 | C-TEF15 |
| Round type | C-TFK15 | C-TFF15 | ||||||||||
| 10 | 3 laps | 4.9 | 10.6 | Square Type | C-TEK15 | C-TEF15 | ||||||
| Round type | C-TFK15 | C-TFF15 | ||||||||||
| 20 | 1.8 laps | 4.3 | 10.3 | Square Type | C-TEK15 | C-TEF15 | ||||||
| Round type | C-TFK15 | C-TFF15 | ||||||||||
Alterations
■ Ball Screw Detailed dimension of alteration KC··KLC keyway
| Shaft Dia. | b | t | ||
| Reference dimension | Tolerance (N9) | Reference dimension | Tolerance | |
| 6 to 7 | 2 | -0.004 -0.029 | 1.2 | +0.1 0 |
| 8 to 10 | 3 | 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
| 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) | ||||||||||
| ~125 | 126~200 | 201~315 | 316~400 | 401~500 | 501~630 | 631~800 | 801~1000 | 1001~1250 | 1251~1600 | 1601~2000 | |||
| E-TBS | 4 | 0.060 | 0.075 | - | - | - | - | - | - | - | - | - | 5 |
| 6 | 0.075 | 0.075 | - | - | - | - | - | - | - | - | - | ||
| 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 | ||
| 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 |
| 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 | - | - | ||
| 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 | - | ||
| 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. Ball Screw When 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.
Characterized by small runout, MISUMI standard products are suitable for machining equipment.
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 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
● 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 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 |
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Related Products
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".