Shafts
Your Professional 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 Shaft]()
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 -
![Drive Shaft]()
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 -
![Precision Metal Shaft]()
Precision Metal ShaftCNC Form Turning is an advanced and efficient manufacturing technology designed for the shape processing of precision parts.read more -
![Metal Custom Shafts]()
Metal Custom ShaftsPrecision Metal Shaft is a high-precision shaft product manufactured through precision machining. It is usually used to transmit power or signals and connect various mechanical components. These...read more -
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Shafts ProductsShafts Products are one of the key components used to transmit power or signals and connect various mechanical components. These shaft products play an important role in various industrial and...read more -
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Automated Lathe PartsAutomated Lathe Parts are key components for automated lathe equipment. They are manufactured with high-precision processing and high-quality materials to ensure stability, reliability and...read more -
![Custom Shafts]()
Custom ShaftsCustom Shafts are shaft products custom-made to meet customer specific needs and are suitable for a variety of industrial and commercial applications. Theseread more -
![Precision Shafts]()
Precision ShaftsPrecision Shafts are high-precision mechanical parts used to transmit power or signals and connect various mechanical components to ensure their normal operation.read more -
![Electronic Part Shafts]()
Electronic Part ShaftsElectronic Part Shafts are one of the key components used in electronic equipment. Their function is to transmit power or signals, connect various electronic components and ensure their smooth...read more
Why choose us
100% Satisfaction Guarantee
We're so confident you'll be happy with our services, we guarantee it.
Production Market
Domestic 50%;Overseas 50%(North America :40% ;Middle East:30%; South East Asia:20%)
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.
A simple shaft definition is that they are essential mechanical components whose primary purpose is to transfer power and motion between various elements within a system while maintaining a strong, durable, and safe interface.Therefore, their geometric appearance is cylindrical. Typically, there are mounting structures at the ends as well to allow assemblage with other mechanical components via appropriate fasteners.Shafts, while seemingly basic in terms of design, are quite complex, requiring a strong conceptual understanding of various engineering disciplines like design, heat transfer, stress analysis, and manufacturing.
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Material Option |
Custom shafts |
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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 |
- They are less likely to jam.
- They need less maintenance in comparison to chain system.
- They have high torsional strength.
- They have high value of polar moment of inertia.
- They are very strong and less likely to be failure.
- Internal shape of a hollow shaft is hollow therefore they require less material.
- Hollow shaft have low weight in comparison with solid shaft for same value of torque transmission.
- They have high radius of gyration.
Types Of Shafts
Transmission Shaft
Transmission shafts transmit power between components in mechanical systems. These systems include engines, gearboxes, drive assemblies, etc. Typically, a transmission shaft transfers rotary motion and torque from one part of a machine to another.
Machine Shaft
Machine shafts are ubiquitous in mechanical devices. Mainly, machine shaft is a general term for the all-purpose mechanical shaft. They are very similar to transmission shafts but with the additional purpose of being an integral structural and functional component of the machine.
Flexible Shaft
Flexible shafts are useful for applications where a rigid shaft is impractical or impossible to use. This can be due to space or motion constraints. Their flexibility comes from their unique construction featuring coiled or braided metal wires, like a rope. Owing to this build, a flexible mechanical shaft can bend and twist without losing the ability to transmit rotational motion.
Axle
Axles are automotive shafts that support and drive critical components wheels. They transmit power from the engine to the wheels while also bearing the vehicle’s weight. Due to this, they are subject to intense loading conditions, which require them to be highly durable and resistant to bending forces.
Propeller Shaft
Propeller shafts are special-purpose transmission shafts with the sole purpose of transmitting rotational power to propellers, primarily in marine applications such as ships.
Stub Shaft
Stub shafts are short shafts that primarily serve as interfacing devices in mechanical devices rather than load-bearing components. Generally, their use is in gearboxes. A stub shaft usually has just enough material that it extends a bit from a larger shaft or housing. Its free, cantilever end features splines or keyways to attach other coupling components for power transmission.
Dimensioning
At the basic level, a shaft with incorrect dimensions may not assemble with other components. For instance, an oversized shaft would not fit well with other components like gears or sleeves, potentially damaging them.
Tolerancing
Since all types of shafts are parts of a larger assembly, defining the correct tolerances in the engineering drawing is a critical factor. An effective assembly between shafts and components like hubs, bearings, sleeves, etc. is highly dependent on the tolerances.
Form
The form of a mechanical shaft refers to qualities like cylindricity, coaxiality, and runout. A shaft must be as close as possible to a perfect cylinder, otherwise, it will have an uneven mass distribution about its axis, which can damage components like bearings and decrease efficiency. Similarly, if a shaft has different features with variable diameters, all of them should be coaxial to avoid similar issues.
Surface Finish
Surface finish is another consideration for mechanical shaft manufacturing. The most important factor is frictional forces between the shaft and mating components. If the surface is rough, there is high friction at the mating interface, which can cause uneven mounting pressure, damage, and wear.
Balancing
Shafts transmit rotary power. Since they rotate in the process, mass balancing is a critical issue. If a mechanical shaft has a mass imbalance, it adds extra imbalance loads to load-bearing components like bearings, decreases mechanical efficiency, and increases the chances of failure.
Stresses in Shafts
Shear stress caused by torque transmission (due to twisting loads induced by torque);
Bending stress, either compressive or tensile, caused by forces acting on mechanical components such as pulleys and gears, as well as the weight of the shaft; Combined stresses induced by bending and twisting loads.
The maximum allowable design shear stress is:
Shaft with keyway allowance: 56,000 kN/m^2.
Shaft without keyway allowance: 42,000 kN/m^2.
The maximum allowable bending stress is:
Shaft with keyway allowance: 112,000 kN/m^2.
Shaft without keyway allowance: 84,000 kN/m^2.
Manufacturing of Shafts
Shafts are manufactured using the hot rolling process. Compared to hot rolling, cold rolling results in higher strength of the shaft, but cold rolling can lead to high residual stresses, causing deformation of the shaft during machining. For manufacturing larger diameter shafts, the forging process is utilized.
After rolling, the shaft undergoes end machining, with one end of the shaft mounted on a fixture and the other end supported by the turret of a lathe. For precision machining of the shaft, the tool holder is fixed, and when the power is turned on, the chuck begins rotating the shaft.
Dial indicators are used to check the concentricity of the shaft before machining, and various operations such as turning, facing, grooving, taper turning, etc., are performed according to the requirements. The final machining process is best suited for mass production, CNC applications, etc. Alternatively, CNC double-ended machines with the shaft clamped between rotating tools and fixtures can be used for machining.
To achieve concentricity and roundness, rotating tools should be aligned on the centerline. This process is commonly employed for manufacturing transmission shafts and motors.
Shaft Power Transmission
As we know, shafts are used for power transmission, so the formula for calculating power transmission is: P=2πnT/60. Where P is the transmitted power (W); n is the speed in revolutions per minute (rpm); T is the torque in N·m.
Mechanical: 100~200;
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Woodworking machinery: 250~700;
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Textiles: 300~800;
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Light machinery workshops: 150~300;
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Auxiliary shafts: 200~600
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Shaft Design
Strength-based shaft design: Transmission shafts are typically subject to bending moments, torques, axial tension, and combinations thereof. Generally, the shaft bears a combination of torsional and bending stresses.
Axial tension on the shaft: Tensile stress = P/A Where A = (π/4) x D^2, and D is the diameter of the shaft in mm.
Bending stress on the shaft: Bending stress = (Mb x Y) / I Where Mb = bending moment, Y = D/2, and I = polar moment of inertia = (π x D^4) / 64
Torsional stress on the shaft: Torsional stress = (Mt x R) / J Where Mt = torsional moment, R = D/2, and J = polar moment of inertia = (π x D^4) / 32
Stiffness-based shaft design: If the shaft does not twist too much, the transmission shaft is referred to as rigid based on torsional stiffness.
{Mt / J} = {(G x θ) / L} Where Mt = torque in N·mm, J = polar moment of inertia = (π x D^4) / 32, D = diameter of the shaft (mm), θ = torsional angle, and G = modulus of rigidity in N/mm².
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FAQ
We're well-known as one of the leading shafts manufacturers and suppliers in China. Please rest assured to buy high quality shafts for sale here and get quotation from our factory. For customized service, contact us now.
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