Square tube
Key Design Features:
1. Precision Spline Engagement
Hardened Spline Profiles – Precision-machined internal and external splines (HRC 58-62) ensure zero-backlash torque transmission and smooth sliding action
Multiple Spline Standards – Available in DIN 5480, DIN 5482, SAE J498, JIS D 2001, or custom involute/straight profiles to match your driveline requirements
Optimized Tooth Geometry – Pressure angles of 30° or 37.5° for maximum load distribution and minimal stress concentration at tooth roots
High-Torque Capacity – Optimized spline length-to-diameter ratios enable torque transmission up to 30% higher than conventional keyed connections
2. Integrated Sleeve-Shaft Configuration
Telescopic Length Adjustment – Internal spline sleeve allows axial travel from 50mm to 500mm for driveline length compensation and misalignment absorption
Precision-Ground Bearing Surfaces – CNC-machined outer diameter surfaces (h6 tolerance) serve as bearing races or sealing surfaces
Solid Forged Construction – One-piece sleeve body manufactured from 20CrMnTi or 42CrMo alloy steel for superior torsional strength
Multiple End Connections – Choose from flange yoke, welded yoke, threaded, or bearing-supported end fittings to suit various assembly requirements
3. Superior Torque Transmission
Precision-ground splines with hardened tooth surfaces (HRC 58-62)
Phosphated or coated splines for reduced friction and extended wear life
Operating angles up to 3° (single sleeve) with minimal efficiency loss
Dynamic load capacity up to 5000 Nm for heavy-duty industrial applications
4. Industrial-Grade Durability
Sleeve and shaft manufactured from 20CrMnTi, 20CrNiMo, or 42CrMo alloy steel
Carburizing and hardening heat treatment (case depth 0.8-1.2mm) for superior wear resistance
Sealed grease lubrication with multi-lip nitrile rubber seals (NBR) or Viton for high-temperature applications
Corrosion-resistant coating options: black oxide, zinc phosphate, or electroless nickel plating
Surface finish Ra 0.8-1.6 μm on critical sealing and bearing surfaces
5. Versatile Configuration Options
Sliding Spline Sleeve – For applications requiring continuous axial movement and length adjustment
Fixed Spline Coupling – For rigid connections with precise torque transmission and zero end play
Double Sleeve Assembly – For parallel offset compensation or extended telescopic travel requirements
Combination Designs – Spline sleeve paired with universal joint yoke, flange, or constant velocity joint ends
Custom Stroke Lengths – Axial travel customized from 50mm to 1000mm based on application specifications
Why Choose Hangzhou Ocean Industry Co., Ltd.?
20+ Years Manufacturing Experience in automotive driveline components
Global Export Network – Serving customers in 50+ countries
Advanced Production Facilities – CNC machining, heat treatment, dynamic balancing
Reliable Lead Times – 15-30 days for standard products, 45-60 days for custom orders
Professional Technical Support – Engineering team with automotive industry expertise
Long-term Partnership Approach – Dedicated account management for strategic clients
Hangzhou Ocean Industry Co., Ltd. is a professional manufacturer, and most of our goods have been exported to Europe since 2005. The Square tube from Hangzhou Ocean Industry Co., Ltd. is a precision-engineered power transmission component designed for axial sliding engagement, torque transfer with length compensation, and dynamic driveline applications requiring smooth reciprocating motion. Featuring an integrated internal spline sleeve and external shaft configuration, this assembly offers exceptional load distribution, precise axial guidance, and reliable performance across automotive transmissions, industrial gearboxes, agricultural PTO systems, and heavy-duty mobile equipment.
Crafted with high-grade alloy steel and precision machining, this Square tube ensures zero-backlash torque transmission, minimal friction during axial movement, and extended service life even under high-load, high-speed operating conditions.
