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Splined Steel Tube

Splined Steel Tube Manufacturer | Internal & External Splined Tube Supplier | Baokun Steel

Precision Splined Steel Tubes for Reliable Torque Transmission

Baokun Steel manufactures high-precision splined steel tubes designed for efficient torque transmission and accurate shaft positioning. Our splined tubes are produced through precision cold drawing and profile forming processes, providing excellent dimensional accuracy, wear resistance and mechanical strength.

We supply both internal splined tubes and external splined shafts according to customer drawings or international standards. Whether for agricultural machinery, PTO drive systems, hydraulic equipment or industrial transmissions, our engineering team can provide customized solutions tailored to your application.

Key Benefits

✓ Internal & External Splines

✓ High Torque Capacity

✓ Excellent Concentricity

✓ Precision Cold Drawn

✓ OEM & Custom Profiles

✓ Drawing-Based Manufacturing

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Splined Steel Tube Manufacturer

What Is a Splined Steel Tube?

A splined steel tube is a precision mechanical tube featuring internal or external spline profiles that enable efficient torque transmission while ensuring accurate shaft alignment.

Compared with traditional keyway connections, splined tubes provide:

Higher torque transmission
Better load distribution
Reduced backlash
Longer service life
Easier assembly and disassembly

Splined steel tubes are widely used in agricultural machinery, hydraulic equipment, construction machinery, industrial gearboxes and power transmission systems.

Splined Tubes Technical Specifications

Item	Specification
Product Name	Splined Steel Tube
Type	Internal Splined / External Splined
Manufacturing Process	Cold Drawn
Material	Carbon Steel, Alloy Steel
Steel Grades	SAE 1020, SAE 1045, ST52, CK45, SAE4140,4340,Custom
Outside Diameter	Customized
Inside Diameter	Customized
Wall Thickness	Customized
Length	Up to 6000 mm
Surface	Black, Oiled, Phosphated, Zinc Plated (Optional)
Heat Treatment	Optional
Tolerance	According to Drawing
Inspection	100% Dimensional Inspection

PTO Splined Tube Applications

Agricultural Machinery

PTO Drive Shafts
Tractors
Rotary Tillers
Harvesters
Seeders

Hydraulic Equipment

Hydraulic Cylinders
Hydraulic Pumps
Hydraulic Power Units

Industrial Transmission

Gearboxes
Drive Shafts
Couplings
Power Transmission Systems

Construction Machinery

Excavators
Loaders
Cranes
Road Machinery

Mining Equipment

Heavy-duty transmission components for harsh operating conditions.

Automotive Industry

Transmission components and custom mechanical parts.

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Why Choose Baokun Steel

Precision Manufacturing

Advanced cold drawing equipment ensures excellent dimensional consistency.

Custom Engineering Support

Our engineering team can manufacture products according to your technical drawings or samples.

Stable Material Quality

High-quality seamless steel tubes provide excellent mechanical performance and long service life.

Strict Quality Inspection

Every production batch undergoes comprehensive inspection before delivery.

Flexible Production

Support for both prototype development and volume production.

Global Export Experience

Products supplied to customers in the hydraulic, agricultural and industrial equipment sectors.

Custom Manufacturing Service

We support customization for:

Spline Profile
Tooth Number
Tooth Height
Tooth Width
Outside Diameter
Inside Diameter
Length
Steel Grade
Heat Treatment
Surface Finish

Just send us your drawing, sample or technical requirements.

FAQ

What types of splined tubes do you manufacture?

We manufacture internal splined tubes, external splined shafts and custom spline profiles according to customer drawings.

Can you manufacture based on technical drawings?

Yes. OEM production according to customer drawings or samples is our primary service.

What steel grades are available?

Common grades include SAE 1020, SAE 1045, ST52, CK45 and other carbon or alloy steels according to customer requirements.

Is heat treatment available?

Yes. Heat treatment can be provided upon request to improve hardness and wear resistance.

Can you provide material certificates?

Yes. Material certificates and inspection reports can be supplied when required.

What industries use splined steel tubes?

Our products are widely used in agricultural machinery, PTO systems, hydraulic equipment, construction machinery, industrial transmission systems and other power transmission applications.