Custom Precision Shafts
Your Professional Custom Precision Shafts Supplier
KC is a high-tech enterprise that manufactures hardware products for stamping, machining, turning, and wire forming, especially in stamping and turning processes, wire forming and turning. Strict quality control is ensured & customization is welcomed.
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Splined ShaftSplined Shaft is a shaft product with splined tooth grooves, usually used to transmit torque and rotational motion. The design of the spline shaft allows it to cooperate with the spline sleeve to...read more
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Drive ShaftDrive Shaft is a mechanical device used to transmit power. It is usually used to connect the engine and the transmission system to transmit power from the engine to the wheels or other mechanical...read more
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Precision Metal ShaftCNC Form Turning is an advanced and efficient manufacturing technology designed for the shape processing of precision parts.read more
Why choose us
100% Satisfaction Guarantee
We're so confident you'll be happy with our services, we guarantee it.
Extensive Experience
Our team of professionals have been in the business for quite some time. Let us deliver solutions that work the first time!
Fair & Competitive Pricing
Our pricing structure is designed to make a modest profit so that we can continue to be a Hero another day.
Production Market
We export our products Domestic 50%;Overseas 50%(North America :40% ;Middle East:30%; South East Asia:20%)
A spline shaft is a cylindrical mechanical component that features a series of precisely machined ridges or grooves,referred to as splines,cut along its outer surface, parallel to the shaft's axis. These splines are designed to mate with corresponding internal grooves in another mechanical part, such as a gear, hub, bushing, or coupling. When properly engaged, the splines lock the two components together rotationally, allowing torque (rotational force) to be transmitted efficiently between them while maintaining accurate angular alignment.

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Material Option |
Splined Shaft |
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Wire Diameter |
Ø1.00-ø42.00mm |
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Customizable |
Can made your drawings ,sample and dimension |
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Surface Treatment |
Nickel plating, chrome plating, Color zinc plating, black, ball spraying, Apply oil , Passivating, paint ,electrophoresis, Silver plating etc. It also can be environmentally friendly or as customer's need |
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Application |
Hardware, Aviation, Motorbike, Bicycle, Furniture, Plastic parts, Toy, Automotive, Electro communication, Lamps and Lanterns, Clamp, Switch, Mirror, Gift, Medical equipments, Molds, Home appliances, Cameras, Printers and other industries |
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Processing Craft |
Material purchased→Production→Heat treatment→Surface treatment→Check→Package→Shipping |
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Heat treatment |
Stress relieving, Tempering, Quenching ,Carburizing |
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Certification |
ISO 9001, SGS, RoHS, TS14969, ISO13485,ISO14001 |
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Lead Time |
5-20 workdays based on MOQ |
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Package |
PE bags, Cartons, Pallets, Blister box, Customized designs and specifications are accepted |
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Type of shipping |
International express by DHL, UPS, FedEx etc, FOB HK or Shenzhen |
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Payment term |
Telegraphic Transfer(TT,T/T);Advance TT,T/T |
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Warranty |
100% return goods or refund payment if quality problem |
Advantages of Splined Shaft
Transmission: These parts ensure a secure connection between elements, allowing torque to be transferred effectively without slippage.
Distribution: The use of splines helps distribute loads evenly across the entire assembly, reducing stress and enhancing durability.
Alignment: With their interlocking design, these mechanisms guarantee precise positioning between rotating parts.
Capacity: Due to their robust construction, these systems are capable of handling substantial torque, making them suitable for heavy-duty applications.
Stability: The design prevents unwanted axial displacement, providing stability during operation by locking components securely in place.
Maintenance: Their construction allows for simple assembly and disassembly, which is beneficial for routine maintenance and repairs.
Versatility: Available in various forms and configurations, they are adaptable to a broad spectrum of applications across industries.
Types of Splined Shaft
Involute Splines
Similar to gears, these splines have teeth shaped in an involute profile.They provide even distribution of load and commonly find high-torque applications, such as in automotive and heavy machinery.
Parallel Key Splines
Features straight-sided teeth that are parallel to the shaft axis.These splines are typically easier to manufacture and are suitable for moderate load conditions.
Serrated Splines
Consists of triangular-shaped teeth that are more numerous than other spline types.These splines are used for smaller, more precise applications, often found in tools and smaller machinery.
Helical Splines
The teeth are cut at an angle, forming a helical shape.Helical splines provide smoother torque transmission and are ideal for transmission systems.
Crowned Splines
The teeth of crowned splines are curved or “crowned,” allowing for slight misalignment between the shaft and mating component.This type is often employed in systems with flexible or misaligned couplings.
Ball Spline Shafts
These feature linear grooves that allow for both rotational and linear motion.Commonly found in robotics, CNC machines, and other equipment where both motion types are required.

Applications of Splined Shaft
Automobile Industry:
Splined shafts are integral to various automotive systems, ensuring smooth power transmission and precise alignment.
Aviation Industry:
In aerospace, splined shafts are pivotal in propeller and rotor assemblies.
Agricultural Equipment:
Farm machinery often uses splined shafts for power transmission and rotational tasks.
Marine Applications:
In marine environments, splined shafts are used in propulsion systems and other machinery.
Power Tools:
Many handheld and stationary power tools employ splined shafts for torque transmission and tool attachment.
Industrial Machinery:
Splined shafts are ubiquitous in manufacturing units, aiding in the smooth operation of various machines.
Construction of Splined Shafts
Material Selection:
Depending on application requirements, materials can range from steel and aluminum to titanium.
Machining:
The shaft is machined to the desired dimensions using turning, milling, or grinding processes. Splines are cut using broaching or hobbing tools.
Heat Treatment:
Improves strength, hardness, and wear resistance through quenching, tempering, or annealing.
Finishing:
Grinding or polishing achieves the required surface finish and dimensional accuracy.
Stainless Steel:
Known for its strength, corrosion resistance, and longevity, ideal for marine and aerospace applications.
Carbon Steel:
An economical option for industrial machinery and automotive applications.
Alloy Steels:
Such as chrome-molybdenum and nickel-chromium, used when higher strength and wear resistance are required.
Aluminum Alloys:
Lightweight and corrosion-resistant, suitable for aerospace and other weight-sensitive applications.
Other Materials:
Including brass, bronze, and titanium, depending on specific needs.
Manufacturing Processes for Spline Shafts
Broaching: Broaching uses a multi-tooth cutting tool to remove material from the workpiece, producing highly accurate spline profiles. It is ideal for high-volume production due to its precision and efficiency.
Hobbing: Hobbing involves a rotating tool called a hob that cuts the spline profile into the workpiece through continuous engagement. It is well-suited for producing complex spline shapes and is commonly used in gear and shaft manufacturing.
Shaping: Shaping employs a reciprocating cutting tool to create spline profiles by moving back and forth across the workpiece. This process is versatile and effective for both internal and external splines, making it suitable for custom and medium-sized production runs.
Milling: Milling utilizes a rotating cutter to remove material and form grooved profiles. It offers flexibility for creating various spline shapes and is used for prototypes and small to medium production runs.
Electrical Discharge Machining (EDM): EDM uses electrical discharges to erode material from the workpiece, allowing for high-precision and complex spline shapes, especially in hard materials. Moreover, it is commonly used in high-precision and aerospace applications.
Turning: Turning involves rotating the workpiece against a stationary cutting tool to form external splines and cylindrical shapes. It is effective for producing simple spline profiles and is used in both prototype and production environments.
Grinding: Grinding employs an abrasive wheel to achieve precise dimensions and smooth surfaces on spline shafts. It often acts as a finishing process for high-precision applications where tight tolerances and high-quality finishes are required.
Working Principle of Spline Shafts

Transmits Torque:
It transfers torque from one section to another. Slike are grooves or ridges punched on the internal parts of the shaft through which torque is transmitted from one part to the other.
Eliminates Noise:
By connecting parts sufficiently tight, splined shafts reduce unwanted vibrations and noises within the machines. This results in efficiency and less noise is made while the machines are in operation.
Handle Misalignment:
They handle small irregularities that may be experienced on parts that are in product lines. This may lower the stress and harm in the operation of the shaft and other related parts.
It transfers torque from one
Shaft Diameter: This determines the shaft’s load-carrying capacity and compatibility with mating components.
Spline Type: The design of the splines affects the shaft’s torque transmission and alignment properties.
Number and Size of Splines: These influence the shaft’s load distribution and torque capacity.
Shaft Length: The length should match the requirements of the application.
Material: The material should be chosen based on the expected load and environmental conditions.
Surface Treatment: Surface treatments can enhance the shaft’s durability and resistance to wear and corrosion.
Maintenance And Care For Splined Shafts
Cleaning Techniques for Longevity
Splined shafts, crucial for power transmission in diverse machinery, demand regular maintenance to ensure longevity and peak performance. Regular inspections can highlight signs of wear or damage, paving the way for timely interventions. Cleaning is paramount, with routine removal of dirt and debris using soft brushes or compressed air. Solvents or mild detergents are effective for deeper cleaning, especially when contaminants like grease accumulate. Post-cleaning, drying is essential to ward off corrosion, and rust inhibitors can benefit materials susceptible to rust.
Importance of Lubrication and Best Practices
Lubrication plays a pivotal role in the upkeep of splined shafts. The choice of lubricant should align with the shaft’s material and its application. Establishing a consistent lubrication routine minimizes friction and wear, ensuring smooth operations. However, it’s vital to ensure even lubricant distribution without over-lubricating, as excess can attract dirt, leading to potential complications.
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