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Custom Spline Shafts

Elimold provides custom precision spline shaft manufacturing services for global drive systems. We can customize splines and spline shafts to your specifications, whether internal or external splines, metal or plastic, we can perfectly manufacture them to meet demanding application requirements. Simply provide 2D drawings, 3D models, or even a single worn part, and we can transform it into a precision spline that meets your requirements. No drawings? Our engineers will design according to your application needs. Contact us now for a quote.

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Precision Spline Shaft Manufacturer

Elimold is a professional manufacturer of precision spline shafts, with products widely used in various fields. We possess professional spline shaft manufacturing capabilities, enabling us to provide customized spline shafts for our clients, from single-piece prototyping to mass production, ensuring products with tight tolerances, superior durability, and precise gear alignment. We customize spline shafts for original equipment manufacturers (OEMs) and industrial applications, designed for complex meshing, achieving smooth torque delivery, high strength, and reliable performance in harsh environments. We are committed to consistently high quality for all orders.

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Spline Types We Manufacture

Splines come in various shapes and sizes, each designed for a specific application. Below are some of the most common types of spline shafts manufactured by Elimold:

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Involute Splines

Curved tooth profile based on involute geometry providing self-centering characteristics and optimal load distribution. Ideal for high-speed, high-torque applications.
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Straight Sided Splines

Parallel-sided teeth with flat or fillet root forms offering simple manufacturing and reliable performance. Commonly used in automotive and industrial machinery.
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Helical Splines

Angled spline teeth providing gradual engagement for smoother operation and higher load capacity. Ideal for high-performance transmission systems.
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Crowned Splines

Modified tooth profile with longitudinal crown allowing angular misalignment compensation. Perfect for applications requiring shaft deflection tolerance.
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Internal Involute Spline

This design helps evenly distribute the load, making it ideal for high-speed and light loads applications.
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Serrations

Serrated spline consist of parallel grooves cut into male and female components, which engage when mated together.
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Elimold's spline shaft manufacturing capability

  • Splines, shafts, and gears are strictly manufactured according to your drawing requirements.
  • Shaft outer diameter: 15mm – 280mm.
  • Meeting the tightest tolerance of +/-0.002mm.
  • Total length: up to 3600mm.
  • Manufacturing in both imperial and metric units.
  • Meeting any pressure angle requirements.
  • Milling, hobbing, wire cutting, gear rolling, broaching, grinding, electrical discharge machining (EDM), polishing.
  • Heat-treated surface hardness: 58HRC – 62HRC.
  • Gear shaft types: spur gear shaft, helical gear shaft, bevel gear shaft, and combination gear shaft.

Customized Engineering and Technical Collaboration

We have a highly qualified, skilled, and experienced team of engineers who meticulously design and dimension splined shafts by drawing up blueprints. When you work with us, our engineering team collaborates closely with clients to optimize shaft design based on application requirements, including material selection, structural design, and surface treatment processes. This approach enables us to provide customized precision shaft engineering and technical support solutions for industrial applications throughout the entire product development cycle.

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Custom Spline Shaft Manufacturing Factory

Elimold is a leading global manufacturer and supplier of spline shafts. We are equipped with modern production facilities suitable for machining spline shafts of all types and sizes. This allows us to employ various manufacturing methods to meet diverse customer needs for spline shafts, including CNC milling, CNC turning, broaching, gear hobbing, wire EDM, polishing, grinding, and more. At Elimold, we can both customize and produce high-quality spline shafts using efficient and precise CNC machine tools and achieve flexible, detailed control through manual operation of traditional equipment. Our spline shafts are widely acclaimed for their high performance, superior quality, perfect surface finish, exceptional durability, and excellent corrosion resistance.

Comprehensive Spline Shaft Manufacturing Capabilities

Our production system covers a wide range of spline shafts. These shafts are manufactured using techniques such as forging, investment casting, die casting, and precision CNC machining. This enables us to provide comprehensive precision spline shaft manufacturing capabilities for customized industrial applications, with the flexibility to meet both prototyping and mass production needs.

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Forging

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Investment casting

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Die casting

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CNC machining

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CNC Turning

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Swiss CNC Machining

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Advanced Spline Shaft Manufacturing Process

Our engineers highly value collaboration and effective communication with our clients. We have extensive experience in meeting the most challenging form factors and stringent tolerance requirements. We customize tools and fixtures for different types of splines to perfectly tailor spline shafts to your needs. Furthermore, our engineering team can assist in analyzing or improving existing designs and provide suggestions for new designs. Our engineering team is able to produce a wide variety of involute splines, sawtooth splines, and straight-edge splines to meet your specific requirements by employing different pressure angle designs such as 30º, 37.5º, and 45º. Elimold splines are manufactured using the highest quality materials and are meticulously designed and engineered to meet each customer’s specifications, such as tight tolerances, dynamic form factors, and custom tooth counts and dimensions.

OEM Custom Spline Shaft Manufacturing Capabilities

Elimold provides customized spline shaft manufacturing solutions for Chinese OEMs and industrial clients, focusing on precision geometry, stable performance, and scalable production capabilities. Our spline shaft manufacturing services for global OEM applications cover a wide range of sizes to meet diverse engineering needs. We are capable of producing spline shafts with outer diameters from 0.25 inches to 18 inches, lengths from 0.50 inches to 48 inches, and module specifications from 0.5 to 12. This flexibility ensures compatibility with a variety of mechanical systems, including power transmission units, axles, gearboxes, and motion control components.

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Custom Spline Shaft Manufacturing Capabilities and Solutions

Elimold is your trusted supplier of custom spline shafts, offering comprehensive spline shaft manufacturing solutions covering prototyping, small/medium-batch production, and high-volume production. Our robust production capabilities ensure high precision, durability, and repeatability for all spline shaft projects. Our manufacturing capabilities include:

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Rapid Prototyping

Rapidly produce functional prototypes of custom spline shafts for design validation and performance verification before mass production.
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Small to Large Batch Production

Efficient production of custom spline shafts in small to large batches, meeting stringent tolerance and quality standards.
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Complex Geometry and Multi-Step Machining

Manufacturing complex geometries, such as splined gear shafts and motor spline shafts. Combining milling, turning, and grinding processes to achieve optimal surface finish and dimensional accuracy.
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Highly Competitive Custom Spline Shaft Manufacturing Services

Elimold offers highly competitive prices for custom spline shaft manufacturing. Splines in spline shafts are typically used in rotary drive mechanisms and any machine that transmits rotary motion from an input shaft to an output shaft. One or more spline structures are usually used. A spline shaft is a shaft with regularly spaced teeth arranged around its perimeter in the direction of rotational motion. These teeth can be straight or sharp. The difference between external and internal spline shafts is that there is a gap between the teeth of an internal spline shaft. The rotational motion of a spline shaft is transmitted to internal spline components, such as gears or other rotating mechanisms. Spline drives can distribute the load evenly across the sides of the teeth. This weight distribution method results in a longer service life than keyway drives.

Elimold's Custom Splined Shaft Projects

These custom splined shafts we recently completed are masterpieces of craftsmanship. From the meticulously machined external splines to the broached internal splines, every detail is critical. Learn how Elimold can help you with your next custom splined shaft manufacturing project.

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Available Materials

We can manufacture spline shafts in a variety of materials, from surface-hardened alloy steels and lightweight titanium alloys to various high-temperature alloys and nickel-based high-temperature alloys, to meet your application requirements. The materials listed above are our most commonly used, but not exhaustive. If you require other materials, please contact us, and we will manufacture suitable spline shaft products for your specific application needs.

  • Carbon Steel
  • Alloy Steel
  • Stainless Steel
  • Aluminum
  • Brass
  • Bronze
  • Ductile Iron
  • Nickel Alloy
  • Titanium
  • Invar Alloy
  • Kova Alloy
  • High-temperature Alloy
  • Nickel-based high-temperature Alloy

Heat Treatments

We offer various thermal and surface treatments for custom gears. Selection should be based on your requirements for surface hardness, wear resistance, or corrosion protection. Below are our commonly used gear heat and surface treatments.

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Carburizing / Case Hardening

Applicable to low-carbon steels. It creates a hard, wear-resistant outer layer (case) while maintaining a tough, ductile core to absorb shock loads.
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Induction Hardening

Used to harden specific areas, typically the gear teeth, without affecting the entire component. Suitable for medium to high-carbon steels and alloy steels.
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Through Hardening

Increases hardness uniformly throughout the gear. Will cause slight dimensional distortion that requires post‑treatment grinding.
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Nitriding

A low-temperature surface hardening process that provides high wear resistance with minimal dimensional distortion.

Surface Coatings & Finishes

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As Machined

The standard finish straight from the CNC machine or gear hob. No additional protective layer is applied.
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Black Oxide

Provides mild corrosion resistance and a uniform black appearance for ferrous metals. Dimensional changes are negligible. Requires regular oiling to maintain rust protection.
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Passivation

Applicable to stainless steel. Removes free iron from the surface and promotes the formation of a protective oxide layer. Does not alter dimensions.
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Zinc Plating

Provides a protective zinc barrier against corrosion for steel gears. Available with clear (blue) or yellow chromate conversion. Adds measurable thickness.
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Quality Assurance and Precision Control

Elimold’s spline shaft manufacturing focuses on quality and precision. Every spline shaft is inspected using a coordinate measuring machine (CMM), laser measurement, and functional measurement to ensure tolerances are strictly controlled within ±0.002 mm. All processes comply with ISO standards and have complete material traceability. Furthermore, for complex or hard-to-reach splines and harder materials, a full suite of gauge measurements is especially important. For small-batch production or reverse-engineered parts, gauge measurement may be impractical. We can use your supplied mating parts as a standard, or develop male and female assemblies as needed, ensuring the durability of every precision spline shaft.

Quality Assurance Inspection Equipment & Capabilities

Our quality management system is structured to verify dimensional accuracy, gear geometry, and material compliance at every stage of production. Inspection protocols are defined based on customer requirements and industry standards. The following is the quality inspection equipment we use to test spline shafts.

Coordinate Measuring Machines (CMM)

Used for verifying overall dimensions, hole locations, true position, and geometric dimensioning and tolerancing (GD&T) callouts.

Gear Analytical Testers

Dedicated equipment to measure specific gear characteristics including profile (involute), lead, pitch deviation, and radial runout.

Hardness Testers

Rockwell and Brinell testing methods used to verify material hardness before and after heat treatment processes.

Surface Roughness Testers (Profilometers)

Utilized to measure the micro-irregularities of machined and ground surfaces to ensure compliance with specified Ra/Rz values.

Optical Comparators

Used for inspecting 2D profiles, chamfers, and small features that are difficult to measure with tactile probes.

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Elimold Spline Shaft Manufacturing Order Processing Advantages

We encourage customers to place 12-month bulk purchase orders to meet annual needs. This allows us to reserve materials specifically for our customers, and typically, we can ship within one business day.

  • Bulk orders for custom spline shafts eliminate lead times.
  • A single spline shaft purchase order is significantly more economical than multiple purchase orders.
  • Our customers can avoid costs associated with shelf space or storage space.
  • We want to help you ensure cost certainty, as product prices remain constant throughout the entire period.

Applications & Industries

Our spline shafts manufacturing serve diverse industries and applications, providing reliable power transmission solutions for automotive, industrial, and motion control systems.

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Automotive

Automotive spline shaft applications including drivetrain systems, differentials, and power transmission components.
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Aerospace

High-precision spline shafts for aerospace applications requiring exceptional reliability and performance in demanding environments.
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Construction

Robust spline shafts for construction equipment and machinery requiring durability and reliability in harsh working conditions.
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Defense

Military-grade spline shafts for defense applications requiring superior performance, reliability, and compliance with strict specifications.
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Electrical

Spline shafts for electrical equipment and power generation systems requiring precision and reliability for continuous operation.
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Electronics

Precision spline shafts for electronic equipment and instruments requiring high accuracy and smooth operation in sensitive applications.
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Heavy Equipment

Heavy-duty spline shafts for industrial machinery and equipment requiring exceptional strength and durability in demanding applications.
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Industrial Manufacturing

Spline shafts for industrial manufacturing equipment and machinery requiring precision and reliability for continuous production.
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Marine

Corrosion-resistant spline shafts for marine applications requiring durability and reliability in harsh seawater environments.
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Medical Devices

Precision spline shafts for medical equipment and instruments requiring high accuracy and reliability to ensure patient safety.
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Off-Highway Vehicles

Spline shafts for off-highway vehicles and equipment requiring exceptional durability and performance in harsh environments.
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Robotics

Precision spline shafts for robots and automation systems requiring high accuracy and reliability for precise motion control.

FAQ

We have the capability to handle a wide range of needs, from prototyping and small-batch to medium-batch and even high-volume CNC spline shaft custom manufacturing, ensuring consistent quality at every step.

Elimold's engineering team can provide custom spline shaft designs based on your specific requirements, including CAD modeling, engineering analysis, and performance verification to ensure optimal performance and compatibility.

We can produce spline shafts with outer diameters from 0.25 inches to 18 inches, lengths from 0.50 inches to 48 inches, and modules from 0.5 to 12. We offer flexible size options to meet diverse application needs.

Elimold's manufacturing process allows for tolerance control within ±0.002 mm. Each gearbox spline shaft, motor spline shaft, and pump spline shaft must be machined to ensure proper fit and function.

The production lead time depends on order quantity, product complexity, and raw material availability. Typically, standard products take 2-4 weeks, while custom products take 4-8 weeks. We will provide an accurate delivery schedule based on your specific requirements.

We use advanced CNC equipment and precision measuring tools, combined with rigorous quality control procedures, to ensure that the dimensional accuracy of our spline shafts is ±0.01mm and the surface finish is Ra 0.4-1.6μm.

We manufacture spline shafts according to international standards, including DIN 5480 (involute spline), ANSI B92.1 (involute spline), ANSI B92.2M (straight-edge spline), SAE standards, and ISO 4156 standards. We also manufacture custom splines according to customer specifications and drawings.

We use a coordinate measuring machine (CMM) to inspect the gear geometry, a spline analyzer to check the profile and lead accuracy, gauge pins to measure the effective clearance width, and perform surface roughness testing and hardness verification. We provide a complete first-piece inspection report including dimensional data.

Carburizing, induction hardening, quenching and tempering, and nitriding are all commonly used processes, but they produce different requirements for the depth of the nitrided layer, core strength, deformation, and surface finish. The drawings must clearly specify the desired machining results.

Elimold offers precision spline grinding services for machined hardened shafts to correct heat treatment deformation and achieve tight tolerances (IT6-IT7). Our CNC spline grinding equipment can machine involute and straight-edge profiles, achieving excellent surface finishes.

Start A Custom Spline Shafts Manufacturing Project Today

Our custom spline shaft manufacturing service provides tailored solutions for precise motion transmission. Submit your drawings. Receive an evaluation of your custom spline shaft manufacturing solution. Please provide drawings and revisions, materials, critical dimensions and tolerances, surface and heat treatment requirements, annual usage, batch size, inspection or PPAP documentation, packaging, and delivery targets.

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