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Product DetailSpecification/Dimensions
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type
- E-BSFS
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Shaft Outer Dia. D(Ø)
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Shaft Overall Length L(mm)
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Spline shaft Left end Tapping [M](mm)
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CAD
- 2D
- 3D
Days to Ship
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- All
- 11 Day(s) or Less
Specify Alterations
Ball Splines Key Provided Straight Nut, One End Tapped
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MiSUMi Economy
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Product Detail
When ③ is configured, there is no guarantee that the keyway positions of the 2 nuts are concentric.
When ④ is configured, the surface will be light yellow, and there may be a color difference.
Due to the surface treatment process, the following parts are more susceptible to rust.
-Cut section
-Groove part
-Cut section
-Tapped part
The relative positions of the grooves of spline shaft, the keyways and oil holes of nuts, and all the alterations (wrench flat, set screw flat, etc.) in the 3D model are for reference only and may differ from their actual positions.
Product Overview
1. Ball spline rolls along the spherical groove using the steel ball inside the spline nut, allowing even a single-axis mechanism to perform linear motion while keeping the nut undeviated in the rotation direction.
2. Compared to the combination of guide shaft and linear bushing, ball spline enables linear motion with high sensitivity and high precision, and can withstand higher loads.
3. Ball spline can safely transmit torque even under cantilever load and deliver high durability.
2. Compared to the combination of guide shaft and linear bushing, ball spline enables linear motion with high sensitivity and high precision, and can withstand higher loads.
3. Ball spline can safely transmit torque even under cantilever load and deliver high durability.
Product Features
1. Shipping within 5 days after placing an order.
2. Drawing-based machining is no longer required, saving the time for design.
3. Spline shaft length can be specified in 1mm increments.
4. Various alterations are available to meet different usage scenarios.
5. This product has a lower price compared to the MISUMI standard products (produced in Japan) and better performance compared to generic products on the market.
■We have professional testing equipment for guaranteed quality
■For this product and Generic Products on the Market, we have conducted a service life comparison using a traveling tester.
→Test conditions:
Load: 50kgf
Speed: 40cm/s
Travel distance: 100km
Spline shaft diameter: 8mm
→Test result:
* Generic products on the market are similar products randomly purchased by our company from online or offline markets.
* The test data are obtained through testing by our company, which are for reference only.
2. Drawing-based machining is no longer required, saving the time for design.
3. Spline shaft length can be specified in 1mm increments.
4. Various alterations are available to meet different usage scenarios.
5. This product has a lower price compared to the MISUMI standard products (produced in Japan) and better performance compared to generic products on the market.
■We have professional testing equipment for guaranteed quality
■For this product and Generic Products on the Market, we have conducted a service life comparison using a traveling tester.
→Test conditions:
Load: 50kgf
Speed: 40cm/s
Travel distance: 100km
Spline shaft diameter: 8mm
→Test result:
* Generic products on the market are similar products randomly purchased by our company from online or offline markets.
* The test data are obtained through testing by our company, which are for reference only.
Product Drawings (Unit: mm)
| Accuracy grade | Spline shaft | Nut | ||||||
| Type |  Material |  Hardness |  Surface Treatment | Type | Material | Hardness | Surface Treatment | |
| Grade N | Solid | Equivalent to SUJ2 | 58HRC～ | － | Straight | Equivalent to SCR420 | 58HRC～ | － |
Specification Table
 Type |  Dh8 |  L1mm increments |  M (Coarse)Selection | D1 | L1 | L2 | L3 | bH8 | h | r | t | u | Basic Rated Torque | Basic Load Rating | Static Allowable Moment | |||||||||||
| Dynamic Ct (N·m) | Static C0t (N·m) | Dynamic C (kN) | Static C0 (kN) | M01 (N·m) | M02 (N·m) | |||||||||||||||||||||
| Tolerance | ||||||||||||||||||||||||||
| E-BSFS | 8 | 60~300 | 3 | 4 | 16 | 0 -0.027 | 27 | 15.7 | 10.5 | 2.5 | 2.5 | 1.25 | 1.2 | 1.5 | 3.3 | 6 | 0.8 | 1.4 | 3.5 | 25.2 | ||||||
| 10 | 60~400 | 3 | 4 | 5 | 21 | 0 -0.033 | 33 | 20 | 13 | 3 | 3 | 1.5 | 1.5 | 13.3 | 23.8 | 2.6 | 3.9 | 9.5 | 85.3 | |||||||
| 13 | 60~400 | 4 | 5 | 6 | 24 | 36 | 23 | 15 | 19.6 | 36.4 | 3.2 | 5.4 | 15 | 124.6 | ||||||||||||
| 16 | 70~600 | 4 | 5 | 6 | 8 | 31 | 0 -0.039 | 50 | 34 | 17.5 | 3.5 | 3.5 | 1.75 | 2 | 2 | 35.7 | 65.1 | 4.3 | 7.7 | 37.1 | 260 | |||||
| 20 | 80~700 | 5 | 6 | 8 | 10 | 35 | 56 | 39.7 | 29 | 4 | 4 | 2 | 2.5 | 59.5 | 107.8 | 5.9 | 10.7 | 55.3 | 380 | |||||||
| 25 | 90~900 | 5 | 6 | 8 | 10 | 12 | 42 | 71 | 50.3 | 36 | 3 | 135.1 | 243.6 | 10 | 15 | 103.5 | 685.9 | |||||||||
| 30 | 100~900 | 6 | 8 | 10 | 12 | 16 | 47 | 80 | 60 | 42 | 190.4 | 343 | 11 | 19.6 | 148.4 | 932.7 | ||||||||||
When ③ is configured, there is no guarantee that the keyway positions of the 2 nuts are concentric.When ④ is configured, the surface will be light yellow, and there may be a color difference.Due to the surface treatment process, the following parts are more susceptible to rust.
-Cut section
-Groove part
-Cut section
-Tapped part
The relative positions of the grooves of spline shaft, the keyways and oil holes of nuts, and all the alterations (wrench flat, set screw flat, etc.) in the 3D model are for reference only and may differ from their actual positions.
Unit: μm
| Max. Runout of Spline Axis Line | |||||||
| Shaft Dia. D | ~200 | 201~315 | 316~400 | 401~500 | 501~630 | 631~800 | 801~900 |
| 8 | 72 | 133 | 185 | 236 | － | － | － |
| 10 | 59 | 83 | 103 | 123 | 151 | 190 | － |
| 13 | 56 | 71 | 83 | 95 | 112 | 137 | 170 |
| 16 | |||||||
| 20 | |||||||
| 25 | 53 | 58 | 70 | 78 | 88 | 103 | 124 |
| 30 | |||||||
Related Products
Precautions
■Precautions for Selection and Use
1. The relative positions of the grooves of spline shaft, the keyways and oil holes of straight nuts, and all the alterations (wrench flat, set screw flat, etc.) in the 3D model are for reference only and may differ from their actual positions.
2. When re-inserting a nut into the spline shaft, be sure to insert it horizontally, otherwise the ball will fall off.
3. As resin parts are used inside the nuts, please use them at temperatures below 80℃.
4. Although the nuts are greased on the inside before leaving the factory, please re-grease them every 2~3 months or every 50km of traveling distance after receipt of the goods, otherwise their use will be impaired.
5. No guarantee is given for the noise level of this product.
6. No guarantee is given that the spline shaft or nuts of this product will fall freely.
7. This product is a machined type, so there will be knife patterns and color difference in its appearance. It is normal for the product to have some scratches or color changes. Please feel free to use.
8. The spline shaft is quenched, and annealed during machining.
Due to the annealing treatment, the hardness of the machined part + area about 15 mm before and after the part may be reduced (see the following example). And the annealed section is out of the guaranteed range of outer diameter dimensional tolerance.
Subtract the size of the annealed section when calculating the stroke.
1. The relative positions of the grooves of spline shaft, the keyways and oil holes of straight nuts, and all the alterations (wrench flat, set screw flat, etc.) in the 3D model are for reference only and may differ from their actual positions.
2. When re-inserting a nut into the spline shaft, be sure to insert it horizontally, otherwise the ball will fall off.
3. As resin parts are used inside the nuts, please use them at temperatures below 80℃.
4. Although the nuts are greased on the inside before leaving the factory, please re-grease them every 2~3 months or every 50km of traveling distance after receipt of the goods, otherwise their use will be impaired.
5. No guarantee is given for the noise level of this product.
6. No guarantee is given that the spline shaft or nuts of this product will fall freely.
7. This product is a machined type, so there will be knife patterns and color difference in its appearance. It is normal for the product to have some scratches or color changes. Please feel free to use.
8. The spline shaft is quenched, and annealed during machining.
Due to the annealing treatment, the hardness of the machined part + area about 15 mm before and after the part may be reduced (see the following example). And the annealed section is out of the guaranteed range of outer diameter dimensional tolerance.
Subtract the size of the annealed section when calculating the stroke.
The parts that may be reduced in hardness due to annealing are:
·Threaded parts
·Stepped parts
·Tapped parts
·Alterations of wrench flats, set screw flat, retaining ring grooves, and tapped holes
·Threaded parts
·Stepped parts
·Tapped parts
·Alterations of wrench flats, set screw flat, retaining ring grooves, and tapped holes
Example of Use
Part Number
- Incomplete part number.
Please use left hand selections to complete a part number.
Loading...
| Part Number |
|---|
| E-BSFS8-[60-300/1]-M[3,4] |
| E-BSFS10-[60-400/1]-M[3,4,5] |
| E-BSFS13-[60-400/1]-M[4,5,6] |
| E-BSFS16-[70-600/1]-M[4,5,6,8] |
| E-BSFS20-[80-700/1]-M[5,6,8,10] |
| E-BSFS25-[90-900/1]-M[5,6,8,10,12] |
| E-BSFS30-[100-900/1]-M[6,8,10,12,16] |
| Part Number | Price | Minimum Order Qty. | Volume Discount | Days to Ship | Shaft Outer Dia. D (Ø) | Shaft Overall Length L (mm) | Spline shaft Left end Tapping [M] (mm) |
|---|---|---|---|---|---|---|---|
- | 1 Piece(s) | 11 Day(s) | 8 | 60 ～ 300 | 3 ～ 4 | ||
- | 1 Piece(s) | 11 Day(s) | 10 | 60 ～ 400 | 3 ～ 5 | ||
- | 1 Piece(s) | 11 Day(s) | 13 | 60 ～ 400 | 4 ～ 6 | ||
- | 1 Piece(s) | 11 Day(s) | 16 | 70 ～ 600 | 4 ～ 8 | ||
- | 1 Piece(s) | 11 Day(s) | 20 | 80 ～ 700 | 5 ～ 10 | ||
- | 1 Piece(s) | 11 Day(s) | 25 | 90 ～ 900 | 5 ～ 12 | ||
- | 1 Piece(s) | 11 Day(s) | 30 | 100 ～ 900 | 6 ～ 16 |
Loading...
Dimensional Drawing
| Accuracy grade | Spline shaft | Nut | ||||||
| Type | Material | Hardness | Surface Treatment | Type | Material | Hardness | Surface Treatment | |
| Grade N | Solid | Equivalent to SUJ2 | 58HRC～ | － | Straight | Equivalent to SCR420 | 58HRC～ | － |
Specification Table
| Type | Dh8 | L 1mm increments | M (Coarse) Selection | D1 | L1 | L2 | L3 | bH8 | h | r | t | u | Basic Rated Torque | Basic Load Rating | Static Allowable Moment | |||||||||||
| Dynamic Ct (N·m) | Static C0t (N·m) | Dynamic C (kN) | Static C0 (kN) | M01 (N·m) | M02 (N·m) | |||||||||||||||||||||
| Tolerance | ||||||||||||||||||||||||||
| E-BSFS | 8 | 60~300 | 3 | 4 | 16 | 0 -0.027 | 27 | 15.7 | 10.5 | 2.5 | 2.5 | 1.25 | 1.2 | 1.5 | 3.3 | 6 | 0.8 | 1.4 | 3.5 | 25.2 | ||||||
| 10 | 60~400 | 3 | 4 | 5 | 21 | 0 -0.033 | 33 | 20 | 13 | 3 | 3 | 1.5 | 1.5 | 13.3 | 23.8 | 2.6 | 3.9 | 9.5 | 85.3 | |||||||
| 13 | 60~400 | 4 | 5 | 6 | 24 | 36 | 23 | 15 | 19.6 | 36.4 | 3.2 | 5.4 | 15 | 124.6 | ||||||||||||
| 16 | 70~600 | 4 | 5 | 6 | 8 | 31 | 0 -0.039 | 50 | 34 | 17.5 | 3.5 | 3.5 | 1.75 | 2 | 2 | 35.7 | 65.1 | 4.3 | 7.7 | 37.1 | 260 | |||||
| 20 | 80~700 | 5 | 6 | 8 | 10 | 35 | 56 | 39.7 | 29 | 4 | 4 | 2 | 2.5 | 59.5 | 107.8 | 5.9 | 10.7 | 55.3 | 380 | |||||||
| 25 | 90~900 | 5 | 6 | 8 | 10 | 12 | 42 | 71 | 50.3 | 36 | 3 | 135.1 | 243.6 | 10 | 15 | 103.5 | 685.9 | |||||||||
| 30 | 100~900 | 6 | 8 | 10 | 12 | 16 | 47 | 80 | 60 | 42 | 190.4 | 343 | 11 | 19.6 | 148.4 | 932.7 | ||||||||||
Alterations
When ③ is configured, there is no guarantee that the keyway positions of the 2 nuts are concentric.When ④ is configured, the surface will be light yellow, and there may be a color difference.Due to the surface treatment process, the following parts are more susceptible to rust.
-Cut section
-Groove part
-Cut section
-Tapped part
The relative positions of the grooves of spline shaft, the keyways and oil holes of nuts, and all the alterations (wrench flat, set screw flat, etc.) in the 3D model are for reference only and may differ from their actual positions.Unit: μm
| Max. Runout of Spline Axis Line | |||||||
| Shaft Dia. D | ~200 | 201~315 | 316~400 | 401~500 | 501~630 | 631~800 | 801~900 |
| 8 | 72 | 133 | 185 | 236 | － | － | － |
| 10 | 59 | 83 | 103 | 123 | 151 | 190 | － |
| 13 | 56 | 71 | 83 | 95 | 112 | 137 | 170 |
| 16 | |||||||
| 20 | |||||||
| 25 | 53 | 58 | 70 | 78 | 88 | 103 | 124 |
| 30 | |||||||
Basic Information
| Nut Type | Compact Flange | Type | Solid Shaft | End Shape (Left) | Tapped |
|---|---|---|---|---|---|
| End Shape (Right) | Standard | Shaft material | SUJ2 Equivalent | Nut Material | SCR420 Equivalent |
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Frequently asked question (FAQ)
- Question: Do the 3D model on the official website and the actual product have the same positional relationships between the grooves of the spline shafts, the keyways and oil holes of the straight cylinder nuts, and all alterations (wrench slots, planes, etc.)?
- Answer: They may be different.
- Question: Can it be used in high-temperature or special environments?
- Answer: The ball spline uses resin parts. Please use it in environments below 80° C and avoid using it under high temperature conditions or in special environments.
- Question: Can the nut be removed from the spline shaft?
- Answer: As there is a retainer inside the nut, even if removed, the steel ball is less likely to fall. However, it is recommended not to remove it. If it must be removed, please be careful to prevent the steel ball from falling.
Payment Method
- Credit Card
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- Debit Cart
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- Net Banking
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- UPI
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- Cheque on delivery
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- Online payment
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