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Rolled Ball Screws Shaft Dia.8 Lead 2 Accuracy Grade C7

Rolled Ball Screws Shaft Dia.8 Lead 2 Accuracy Grade C7

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Product Description

- Rolled Ball Screws Shaft Dia.8 Lead 2 Accuracy Grade C7 from MISUMI.
- The Rolled Ball Screws have a shaft diameter of 8 mm and lead size is 2mm.
- The accuracy grade option for this product is C7.
- The overall length of the shaft screw can be customized to fit a range of configurations, from 100mm to 400mm, 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.

Product Overview of Ball Screw

1. The product is an Economy series C7 rolled Ball Screw without pre-pressure suitable for a feeding mechanism requiring multi-point positioning.
2. Standard nuts are adopted to meet the requirement of space saving.
3. The shaft end of Ball Screw is processed in accordance with standard specifications, so it can be used directly with the support unit without reprocessing. If the shaft end requires alteration, which should be specified according to the catalog.
4. When used in combination with MISUMI’s Economy series support unit, it has a better effect.

Product Feature of Ball Screw

1. Even if it is MISUMI economy series, the inspection standard is the same as that of MISUMI standard products of Ball Screw, which implements quality inspection before leaving the factory to provide users with products that meet the specifications of the catalog.
2. It no longer needs drawing processing, saving drawing time, min. shipped in 6 day at the earliest.
3. With a rich shaft end specifications, it has specified additional processing to meet a variety of occasions.

Dimensional Drawing of Ball Screw

Product Drawings of Ball Screw (Unit: mm)
Dimension 1

Dimension 2

Dimension 3

Related Products of Ball Screw

Usage Method 1
(Economy series) support unit Standard square type(Economy series) support unit Round type
Fixed side modelSupport side modelFixed side modelSupport side model
C-TEK6C-TEF6C-TFK6C-TFF6
Economic type rolled ball screw Shaft dia.8 Lead 2 Precision C7 Related ProductsEconomic type rolled ball screw Shaft dia.8 Lead 2 Precision C7 Related ProductsEconomic type rolled ball screw Shaft dia.8 Lead 2 Precision C7 Related ProductsEconomic type rolled ball screw Shaft dia.8 Lead 2 Precision C7 Related Products


Screw Shaft Runout Tolerance


 

TypeScrew
Shaft
O.D.
Runout tolerance G (Max.)Incomplete
Hardened
Area (ℓ)
~125126~200201~315316~400401~500501~630631~800801~10001001~12501251~16001601~2000
E-TBS40.0600.075---------5
60.0750.075---------
C-TBSE
C-TBSB
80.1000.1400.2100.270-------10
10-0.1200.1600.2100.2700.350-----
12-0.1200.1600.2100.2700.3500.480----
15-0.1100.1300.1600.2000.2500.3200.4200.550--
20-0.1100.1300.1600.2000.2500.3200.4200.5500.7300.73015
25-0.1100.1100.1300.1600.1900.2300.3000.3800.5000.690
32--0.1100.1300.1600.1900.2300.3000.3800.5000.69020
E-KBS40.050----------5
60.0500.050---------
C-KBS80.0600.0750.100--------
100.0550.0650.0800.100-------
12-0.0650.0800.1000.120------10
15-0.0600.0700.0800.0950.1100.1400.1700.210--
20-0.0600.0700.0800.0950.1100.1400.1700.2100.270-15
25--0.0600.0700.0800.0900.1000.1300.1700.210-
E-KLR40.0500.050---------5
80.0650.0750.100--------
100.0650.0650.0800.100-------


Precautions of Ball Screw

■ Selection and Precautions for Use of Ball Screw
● Rotating the nut by hand may not feel smooth, but does not affect the positioning precision, so this product is suitable for multi-point positioning feeding mechanism. Please feel free to use.
● If the operation requires low runout (e.g. machining equipment), please use MISUMI standard products.
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.
● Lithium soap grease. SHC32 (red) has been applied.
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 Screw 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 (Figure 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 (Figure 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
Precaution 1Precaution 2Precaution 3
   
·Checking for reverse action·Pay attention to intrusion of foreign objects·Nut overstroke is prohibited
Precaution 4Precaution 5Precaution 6
   
Precaution 7

Example Use of Ball Screw

Automatic feeder (the workpiece feeds by the moving and positioning of the slider driven by the Ball Screw via the stepping motor)
Example of Use 1

 

Specification Table of Ball Screw

Specification drawing 1

 

Part Number 

  • Incomplete part number.
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Part Number
C-TBSE0802-[100-400/1]
Part NumberPriceMinimum Order Qty.Volume DiscountDays to ShipShaft Screw Overall Length L
(mm)

-

1 Piece(s) 11 Day(s) 100 ~ 400

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  1. 1

Basic Information

Type Rolled Flange Shape Round Shape, 2 Set Screw Flats at both ends Accuracy Grade C7
Screw Shaft O.D.(Ø) 8 Lead(mm) 2 Shaft End Type EK Type
Fixed Side of Square Bearing Assembly (Purchase Separately) C-TEK6 Square Support Component Support Side (Purchase Separately) C-TEF6 Fixed Side of Round Bearing Assembly (Purchase Separately) C-TFK6
Support Side of Circular Support Assembly (Purchase Separately) C-TFF6

Frequently asked question (FAQ)

Question: What is the operating temperature limit for the economy series rolled ball screw?
Answer: The operating temperature limit for the economy series rolled ball screw is 80°. Exceeding this limit will cause damage to the circulating parts and seals, as well as the deformation of the screw shaft and nut, affecting the life.
Question: How to do if there is abnormal noise heard in use?
Answer: MISUMI does not guarantee there is no abnormal noise during use. If abnormal noise occurs, please check the installation accuracy and the correct selection of surrounding parts. Please loosen the parts before re-adjustment. Please refer to "Precautions" for details.
Question: Is it normal to feel stuck when rotating the nut by hand?
Answer: It is a normal phenomenon, because this product is a rolled ball screw, and there is no run-and-fit test before leaving the factory. The sticking will disappear after running for a period of time under the condition of ensuring the installation accuracy If the sticking reaches the point where the motor can not drive, please contact MISUMI.