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Spline Shaft（Torque：Middle Torque）
A spline shaft is a mechanical component designed to transfer torque between two rotating parts while allowing for linear motion or axial displacement. It features a series of ridges or teeth, called splines, along its length. These splines mesh with corresponding grooves in a mating component, such as a gear or coupling, enabling efficient torque transmission while permitting movement along the shaft's axis. Spline shafts are commonly used in various applications requiring precise torque transmission and axial movement, including automotive transmissions, industrial machinery, robotics, and aerospace systems. They offer advantages such as improved power transmission efficiency, reduced backlash, and enhanced load-bearing capacity compared to other shaft coupling methods, making them essential components in many mechanical systems. To select a spline shaft from MISUMI, determine the required specifications such as length, diameter, spline type, material, and any additional features. Then, use MISUMI's online catalog or contact direct our MISUMI for assistance.
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Specification/Dimensions
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Spline Shaft Outer Dia. D(Ø)
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Type
- Solid
- Hollow
- Hollow (Thin)
- Polygonal
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Nut Length
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Nut Overall Length L1(mm)
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Nut Outer Dia. D1(Ø)
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Preload
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Accuracy Grade
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End Shape (Left)
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Standard -
Tapped -
Stepped -
Stepped and Tapped -
Stepped and Threaded
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End Shape (Right)
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Standard -
Tapped -
Stepped -
Stepped and Tapped -
Stepped and Threaded
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Torque
- High Torque
- Middle Torque
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Shaft material
- SCM415 Equivalent
- SUJ2
- SUS440C Equivalent
- SUS304
- SUJ2 Equivalent
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Number of Nuts(pc(s).)
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Nut Type
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- 15 items
- Sort By
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You can add up to 6 items per a category to the compare list.
MISUMI
This is the least expensive ball spline suitable for fixation using shaft holders, etc., or for incorporating into plates. This standard enables highly accurate linear motion and rotational torque transmission. In addition, the contact area between the ball groove machined into the shaft and the steel ball is large, resulting in a large load capacity and long life. Even a single axis can be used as a linear motion guide, allowing for a compact design.
A dustproof seal is attached to the nut, so the ball will not fall off even if the spline shaft is removed.Days to Ship: 
7 Day(s)
7 Day(s)
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You can add up to 6 items per a category to the compare list.
MISUMI
ball spline with a female thread on one end. This standard enables highly accurate linear motion and rotational torque transmission. In addition, the contact area between the ball groove machined into the shaft and the steel ball is large, resulting in a large load capacity and long life. Even a single axis can be used as a linear motion guide, allowing for a compact design.
A dustproof seal is attached to the nut, so the ball will not fall off even if the spline shaft is removed.Days to Ship:
7 Day(s)
7 Day(s)
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You can add up to 6 items per a category to the compare list.
Ball Splines - Both Ends Tapped
MISUMI
This is the least expensive ball spline suitable for fixation using shaft holders, etc., or for incorporating into plates. This standard enables highly accurate linear motion and rotational torque transmission. In addition, the contact area between the ball groove machined into the shaft and the steel ball is large, resulting in a large load capacity and long life. Even a single axis can be used as a linear motion guide, allowing for a compact design.
A dustproof seal is attached to the nut, so the ball will not fall off even if the spline shaft is removed.Days to Ship:
7 Day(s)
7 Day(s)
-
You can add up to 6 items per a category to the compare list.
Ball Splines - One End Stepped and Threaded, One End Tapped
MISUMI
A ball spline with a stepped male thread on one end and a female thread on the other end. This standard enables highly accurate linear motion and rotational torque transmission. In addition, the contact area between the ball groove machined into the shaft and the steel ball is large, resulting in a large load capacity and long life. Even a single axis can be used as a linear motion guide, allowing for a compact design.
A dustproof seal is attached to the nut, so the ball will not fall off even if the spline shaft is removed.Days to Ship:
7 Day(s)
7 Day(s)
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You can add up to 6 items per a category to the compare list.
Ball Splines - Both Ends Stepped
MISUMI
ball spline with stepped edges on both ends. This standard enables highly accurate linear motion and rotational torque transmission. In addition, the contact area between the ball groove machined into the shaft and the steel ball is large, resulting in a large load capacity and long life. Even a single axis can be used as a linear motion guide, allowing for a compact design.Days to Ship:
7 Day(s)
7 Day(s)
-
You can add up to 6 items per a category to the compare list.
Ball Spline Spline Outer Cylinder Without Cylindrical Key Grooves (PPM Series)
NIPPONBEARING
[Features]·It comes with 2 lock plates for fixing. [Materials]·It is SUJ2.Days to Ship:
Quote
Quote
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You can add up to 6 items per a category to the compare list.
Ball Splines - One End Stepped and Threaded
MISUMI
ball spline with a stepped male thread on one end. This standard enables highly accurate linear motion and rotational torque transmission. In addition, the contact area between the ball groove machined into the shaft and the steel ball is large, resulting in a large load capacity and long life. Even a single axis can be used as a linear motion guide, allowing for a compact design.
A dustproof seal is attached to the nut, so the ball will not fall off even if the spline shaft is removed.Days to Ship:
7 Day(s)
7 Day(s)
-
You can add up to 6 items per a category to the compare list.
Ball Splines - Both Ends Stepped and Threaded
MISUMI
A ball spline with stepped male threads on both ends. This standard enables highly accurate linear motion and rotational torque transmission. In addition, the contact area between the ball groove machined into the shaft and the steel ball is large, resulting in a large load capacity and long life. Even a single axis can be used as a linear motion guide, allowing for a compact design.
A dustproof seal is attached to the nut, so the ball will not fall off even if the spline shaft is removed.Days to Ship:
7 Day(s)
7 Day(s)
-
You can add up to 6 items per a category to the compare list.
Ball Splines - Both Ends Stepped Tapped
MISUMI
ball spline with stepped female threads on both ends. This standard enables highly accurate linear motion and rotational torque transmission. In addition, the contact area between the ball groove machined into the shaft and the steel ball is large, resulting in a large load capacity and long life. Even a single axis can be used as a linear motion guide, allowing for a compact design.
A dustproof seal is attached to the nut, so the ball will not fall off even if the spline shaft is removed.Days to Ship:
7 Day(s)
7 Day(s)
-
You can add up to 6 items per a category to the compare list.
Ball Spline Spline Outer Cylinder with Flange (PPF Series)
NIPPONBEARING
[Features]·Shaft end processing can also be selected on the web. · Flanges are included.Days to Ship:
Quote
Quote
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You can add up to 6 items per a category to the compare list.
Ball Splines - One End Stepped
MISUMI
A ball spline with a stepped surface on one end. This standard enables highly accurate linear motion and rotational torque transmission. In addition, the contact area between the ball groove machined into the shaft and the steel ball is large, resulting in a large load capacity and long life. Even a single axis can be used as a linear motion guide, allowing for a compact design.
A dustproof seal is attached to the nut, so the ball will not fall off even if the spline shaft is removed.Days to Ship:
7 Day(s)
7 Day(s)
-
You can add up to 6 items per a category to the compare list.
Ball Spline Spline Outer Cylinder with Cylindrical Key Grooves (PSP Series)
NIPPONBEARING
[Features]·It comes with a dedicated key. · Shaft material is SUJ2. ·The accuracy class is an advanced class.Days to Ship:
Quote
Quote
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You can add up to 6 items per a category to the compare list.
Miniature Hexagonal Spline, Single Nut (HTK) / Double Nut (HTKW) Series
OZAK
Miniature sizes (hexagonal shaft 3, 4, 5) are now standardized[Features]· Achieve reduced weight and smaller sizer for the machinery and devices· The resin nut (PPS resin) can be combined with the stainless steel shaft (SUS304) to obtain excellent corrosion resistance, which allows it to be used in a wide variety of environments.· The line up also includes standard products with non-backlash specifications (W series).Days to Ship:
10 Day(s)
10 Day(s)
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You can add up to 6 items per a category to the compare list.
Medium-Torque Type, Flange Type Ball Spline, LF Type
THK
[Features]
· Easy to assemble because it can be fixed by bolts to the housing using the flange.
· Ideal for housings with small widths or where there are concerns of deformation associated with machining keyway into the housing.Days to Ship:
19 Day(s)
19 Day(s)
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You can add up to 6 items per a category to the compare list.
Ball Spline Double Chamfered Type Spline Outer Cylinder with Flange (PPT Series)
NIPPONBEARING
[Features]
· Shaft end machining can also be selected online.
· For machining that cannot be selected online, send drawings by FAX, and we will send an estimate.
*The model number for the CAD download link destination is as follows.
· PSP → SSP
· PPF → SSPF
· PPT → SSPT
· PPM → SSPM SSPMDays to Ship:
Quote
Quote
| Brand |
|---|
| Product Series |
| CAD |
| From |
| Days to Ship |
| Nut Type |
| Spline Shaft Outer Dia. D(Ø) |
| Type |
| Nut Length |
| Nut Overall Length L1(mm) |
| Nut Outer Dia. D1(Ø) |
| Preload |
| Accuracy Grade |
| End Shape (Left) |
| End Shape (Right) |
| Torque |
| Shaft material |
| Number of Nuts(pc(s).) |
You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | |
| Brand | MISUMI | MISUMI | MISUMI | MISUMI | MISUMI | NIPPONBEARING | MISUMI | MISUMI | MISUMI | NIPPONBEARING | MISUMI | NIPPONBEARING | OZAK | THK | NIPPONBEARING |
| Product Series | Ball Spline Spline Outer Cylinder Without Cylindrical Key Grooves (PPM Series) | Ball Spline Spline Outer Cylinder with Cylindrical Key Grooves (PSP Series) | Miniature Hexagonal Spline, Single Nut (HTK) / Double Nut (HTKW) Series | Ball Spline Double Chamfered Type Spline Outer Cylinder with Flange (PPT Series) | |||||||||||
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| Days to Ship | 7 Day(s) | 7 Day(s) | 7 Day(s) | 7 Day(s) | 7 Day(s) | Quote | 7 Day(s) | 7 Day(s) | 7 Day(s) | Quote | 7 Day(s) | Quote | 10 Day(s) | 19 Day(s) | Quote |
| Nut Type | Key Provided Type / Flanged Type | Key Provided Type / Flanged Type | Key Provided Type / Flanged Type | Key Provided Type / Flanged Type | Key Provided Type / Flanged Type | Block Type | Key Provided Type / Flanged Type | Key Provided Type / Flanged Type | Key Provided Type / Flanged Type | Flanged Type | Key Provided Type / Flanged Type | Key Provided Type | Flanged Type | Flanged Type | Flanged Type |
| Spline Shaft Outer Dia. D(Ø) | 6 ～ 30.8 | 6 ～ 30.8 | 6 ～ 30.8 | 6 ～ 30.8 | 6 ～ 30.8 | 6 ～ 10 | 6 ～ 30.8 | 6 ～ 30.8 | 8 ～ 30.8 | 6 ～ 40 | 6 ～ 30.8 | 6 ～ 40 | - | - | 6 ～ 10 |
| Type | Solid | Solid | Solid | Solid | Solid | Solid / Hollow | Solid | Solid | Solid | Solid / Hollow | Solid | Solid / Hollow | Polygonal | Solid / Hollow / Hollow (Thin) | Solid / Hollow |
| Nut Length | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard | Standard |
| Nut Overall Length L1(mm) | 25 ～ 80 | 25 ～ 80 | 25 ～ 80 | 25 ～ 80 | 25 ～ 80 | 25 ～ 33 | 25 ～ 80 | 25 ～ 80 | 25 ～ 80 | 25 ～ 100 | 25 ～ 80 | 25 ～ 100 | 11.5 ～ 17.5 | 125 | 25 ～ 33 |
| Nut Outer Dia. D1(Ø) | 14 ～ 47 | 14 ～ 47 | 14 ～ 47 | 14 ～ 47 | 14 ～ 47 | 14 ～ 21 | 14 ～ 47 | 14 ～ 47 | 16 ～ 47 | 14 ～ 64 | 14 ～ 47 | 14 ～ 64 | 10 | 80 | 14 ～ 21 |
| Preload | Standard | Standard | Standard | Standard | Standard | Standard / Light Preload / Medium Preload | Standard | Standard | Standard | Standard / Light Preload / Medium Preload | Standard | Standard / Light Preload / Medium Preload | Standard | Standard / Light Preload / Medium Preload | Standard / Light Preload / Medium Preload |
| Accuracy Grade | Standard Grade | Standard Grade | Standard Grade | Standard Grade | Standard Grade | High Grade | Standard Grade | Standard Grade | Standard Grade | High Grade | Standard Grade | High Grade | Standard Grade | Standard Grade / High Grade / Precision Grade | High Grade |
| End Shape (Left) | Standard | Tapped | Tapped | Stepped and Threaded | Stepped | Standard / Tapped | Stepped and Threaded | Stepped and Threaded | Stepped and Tapped | Standard / Tapped | Stepped | Standard / Tapped | Standard | Standard | Standard / Tapped |
| End Shape (Right) | Standard | Standard | Tapped | Tapped | Stepped | Standard / Tapped | Standard | Stepped and Threaded | Stepped and Tapped | Standard / Tapped | Standard | Standard / Tapped | Standard | Standard | Standard / Tapped |
| Torque | Middle Torque | Middle Torque | Middle Torque | Middle Torque | Middle Torque | Middle Torque | Middle Torque | Middle Torque | Middle Torque | Middle Torque | Middle Torque | Middle Torque | Middle Torque | Middle Torque | Middle Torque |
| Shaft material | SUS440C Equivalent / SUJ2 Equivalent | SUS440C Equivalent / SUJ2 Equivalent | SUS440C Equivalent / SUJ2 Equivalent | SUS440C Equivalent / SUJ2 Equivalent | SCM415 Equivalent / SUS440C Equivalent | SUJ2 | SUS440C Equivalent / SUJ2 Equivalent | SUS440C Equivalent / SUJ2 Equivalent | SUS440C Equivalent / SUJ2 Equivalent | SUJ2 | SUS440C Equivalent / SUJ2 Equivalent | SUJ2 | SUS304 | - | SUJ2 |
| Number of Nuts(pc(s).) | 1 ～ 2 | - | - | - | - | 1 ～ 2 | - | - | - | 1 ～ 2 | - | 1 ～ 2 | - | 1 ～ 5 | 1 ～ 2 |
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Application example related to this category
Related Categories to Spline Shaft
-
- Linear Shafts
- Shaft Supports
- Shaft Collars
- Linear Bushings
- Ball Guides
- Spline Shaft
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- Linear Guides
- Cable Carriers
- Ball Screw
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- Cross Roller
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- Actuators
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-
FAQ Spline Shaft
- Question: What are spline shafts and their primary function in linear motion?
- Answer: Spline shafts are cylindrical rods with ridges or teeth along their length, known as splines. Their primary function in linear motion is to convert rotational motion into smooth and precise linear movement. These splines engage with complementary components to transmit torque efficiently, ensuring controlled motion without slipping or backlash. Spline shafts are crucial in various machinery applications where accurate linear motion is required, such as moving heavy loads or guiding tools with precision, providing reliable and efficient motion control.
- Question: Can you explain the key characteristics of square splines?
- Answer: Square splines feature square-shaped ridges and slots, offering efficient torque transmission and precise alignment. Their design allows for high torque capacity and compatibility with various mating components. Due to their simplicity of manufacture, they are cost-effective for many applications. Additionally, the even distribution of wear along the mating surfaces enhances durability. Square splines are widely used in industrial and mechanical systems where accurate motion control and reliable torque transmission are essential.
- Question: What role do spline shafts play in automotive transmissions?
- Answer: Spline shafts are essential in automotive transmissions for transferring power from the engine to the wheels. They connect parts like the clutch and gears, ensuring smooth power transmission. By enabling the engine's rotational motion to move the wheels with precision, they allow the vehicle to accelerate, decelerate, and shift gears seamlessly. Essentially, spline shafts ensure that your car moves smoothly and efficiently, contributing to its overall performance and driving experience.
- Question: What factors should be considered when choosing a spline shaft?
- Answer: When selecting a spline shaft, it's important to consider factors like the application's torque, speed, and precision requirements. Choose a spline profile and dimensions that match mating components to ensure efficient power transmission. Material selection is key for strength and corrosion resistance. The surface finish impacts durability, while manufacturing methods and costs should be evaluated. Supplier reliability is also crucial. By carefully considering these factors, you can choose a spline shaft that meets your application's needs effectively, ensuring optimal performance and longevity.
- Question: What materials are commonly used for manufacturing spline shafts?
- Answer: Spline shafts are commonly made from materials like steel, aluminum, brass, bronze, titanium, and plastics. Steel offers strength and durability, while aluminum is lightweight. Brass and bronze provide corrosion resistance. Titanium is strong and corrosion-resistant, ideal for demanding environments. Plastics offer benefits like low friction and electrical insulation. The choice depends on factors such as strength, corrosion resistance, weight, and cost.
- Question: What are the maintenance requirements for spline shafts?
- Answer: Maintaining spline shafts involves regular checks for wear, damage, and corrosion. Keep them lubricated to reduce friction and ensure smooth operation. Clean them regularly to prevent dirt buildup. Properly align mating components to avoid unnecessary stress on the shafts. Promptly replace any worn or damaged shafts to prevent further issues. Protect spline shafts from harsh environments and store them correctly when not in use. Following these steps will help ensure the longevity and efficient performance of spline shafts in machinery and equipment.
- Question: How do nut types of influence spline shaft functionality?
- Answer: The type of nut used can significantly affect spline shaft functionality. Slotted nuts provide anti-rotation, ensuring the nut and shaft move together for enhanced torque transmission. Hex nuts offer stability with six sides but lack anti-rotation features. Lock nuts prevent unintentional loosening, employing mechanisms like nylon inserts or serrations. Flange nuts distribute load over a wider area with a built-in washer-like flange. Self-locking nuts have integrated locking features to prevent loosening due to vibrations or external forces. Each type suits specific applications based on torque requirements, environmental conditions, and space constraints.
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