Precision Ball Screws - Shaft Dia. 4; Lead 1 / 2 - Accuracy Grade C5

Caution
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Product Description
Precision Ball Screws are an economy item, The price is cheaper than the MISUMI standard product.They offer a wide variety of sizes to choose from.
[Feature]
● Lead(mm) : 1 and 2
● Screw Diameter (mm) : 4
● Shaft Screw Overall Length L (mm.): 60 to 125, incrementing by 1 mm.
● Accuracy grade : C5
● Material :
Screw Shaft - S55C equivalent
Nut - SCM415H equivalent
[Application]
Precision Ball Screws are commonly used in various applications in factory automation systems
Product Overview of Ball Screw
1. This series of products is the C5 Precision Ball Screw with the shaft diameter of 4 and lead of 1/2.2. It is more suitable for positioning mechanisms in FA automation equipment.
3. The Ball Screw end is machined according to standard specifications. If the shaft end requires alteration, it should be specified according to the catalog.
Dimensional Drawing of Ball Screw
| Accuracy grade | Ball Screw Dia. | Lead | Ball Screw | Nut | ||||
Material of Ball Screw | Hardness | Surface Treatment | Material of Ball Screw | Hardness | Surface Treatment | |||
| C5 | 4 | 1·2 | S55C equivalent | Induction hardening 58~62HRC | - | SCM415H equivalent | Carburized 58~62HRC | - |

Specification Table of Ball Screw

| Part Number of Ball Screw | L(1mm increments) | Y | Number of Circuits | Basic Load Rating | Axial Play | Twisting Direction | |||
Type of Ball Screw | Ball Screw O.D. | Lead | C (Dynamic) kN | C (Static) kN | |||||
| E-KBS | 04 | 01 | 60~125 | L-32 | 3 turns | 0.42 | 0.57 | 0.005 or Less | Right |
| 02 | 2.7 turns | ||||||||
Alterations of Ball Screw
![]() | Part Number ( Type of Ball Screw· Ball Screw O.D.· Lead) | - | L | - | (RLC·TFC…etc.) | |
| E-KBS0401 | - | 80 | - | RLC |
| Alterations of Ball Screw | Code | Spec. | ||||||||
①Ball Screw Nut Orientation Reversed![]() | RLC | Changes the Ball Screw direction. Ordering CodeRLC | ||||||||
②Machining on Support Side Ball Screw End![]() | TFC | Machining added on the support side Ball Screw end. Ordering Code TFC
When specified, Y dimension will become shorter. |
Ball Screw Runout Tolerance
| Type of Ball Screw | Ball 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 of Ball Screw
1. Drawing-based machining is no longer required, saving the time for drawing.2. The total length of Ball Screw can be specified in 1 mm increments. With abundant shaft end specifications, it is possible to specify alterations for different applications.
Example Use of Ball Screw

Precautions 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.
●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 touse.
·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![]() |
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 Screwto 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

Material of Ball Screw
Hardness
Surface Treatment
L
Type of Ball Screw
Ball Screw O.D.
Lead

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When specified, Y dimension will become shorter.




