Changzhou Tiangong Forging Co., Ltd.
                                                                                                           
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Customized Forging Blank Spline Shaft Low Speed Shaft High Speed Shaft Spindle

Price Negotiable
Price: USD1000-USD2000/piece
MOQ: 1
Delivery Time: 30days
Brand: Tiangong
Product Description

Steel Forging Blank Spline Shaft Low Speed Shaft High Speed Shaft Spindle. Our steel forging blanks are the robust starting materials for critical rotating components: spline shafts, low-speed shafts, high-speed shafts, and spindles. Precision-forged, these blanks achieve superior internal grain structure and enhanced mechanical properties. This ensures the final machined parts offer exceptional strength, durability, and fatigue resistance for reliable power transmission and precise rotational control in demanding industrial uses.


Product Features

  • Optimized Internal Grain Flow: Forging enhances strength, toughness, and fatigue resistance, crucial for dynamic loads.
  • Superior Mechanical Integrity: Offers increased tensile strength, yield strength, and resistance to torsional/bending stresses.
  • Ideal for Precision Machining: Dense, homogeneous microstructure provides an excellent foundation for tight tolerances and intricate geometries.
  • Enhanced Durability: Leads to extended service life and reduced maintenance due to inherent resistance to wear and cracking.
  • Customizable Material & Dimensions: Available in various steel grades and customizable to meet specific application needs.

Application Scenarios

These steel forging blanks are essential precursors for key shafts and spindles across many industries:

  • Spline Shafts: Used in automotive drivetrains, industrial gearboxes, and agricultural machinery for torque transmission and precise meshing.
  • Low Speed Shafts: Critical for wind turbines (main shafts), heavy industrial mixers, and mining/conveyor systems handling high torque at low RPMs.
  • High Speed Shafts: Essential for wind turbines (generator output), pumps and compressors, and turbochargers requiring high rotational speeds.
  • Spindles: Core components in machine tools (CNC, lathes), automotive wheel hubs, and textile machinery demanding high precision and rigidity.
Item Details
Product Name Steel Forging Blank Spline Shaft Low Speed Shaft High Speed Shaft Spindle
Material Grades - High-strength alloy steel: 42CrMo / 42CrMo4 / AISI 4140 - Excellent hardenability, toughness, and fatigue resistance - Engineered for long service life in high-torque, high-cycle applications
Forging Equipment - Hydraulic hammers: 5T / 8T / 12T, large open-die forging press - Designed for large-diameter, long-length shafts - Ensures axial fiber orientation and internal structural integrity
Manufacturing Process Hot Forging → Heat Treatment → Rough or Semi-Finish Machining → Straightness Correction → Dimensional & UT Inspection
Forging Ratio ≥ 3.0 — Promotes grain refinement and axial strength, critical for wind turbine load cycles
Applications - Wind turbine main shafts, generator shafts, and pitch/yaw drive shafts - Suitable for 1MW–6MW wind turbine systems - Withstands torsional stress, variable wind load, and start-stop fatigue
Heat Treatment Options - Normalizing and tempering for high tensile strength and core toughness - Optional pre-machining stress relief
Testing & Inspection - Chemical: Spectrometer-controlled alloy composition - Mechanical: Hardness, tensile, yield, impact  - Ultrasonic: Full-length UT  - Dimensional: Shaft length, straightness, concentricity, machining allowance verification
Value-Added Services - Custom diameter & length  - Pre-machining - Protective painting, rust-prevention coating - Export packaging with wood crating, steel banding, and shaft end protection


Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Changzhou Tiangong Forging Co., Ltd.
Location Wangxia Village, Luoxi Town, Xuejia Town, Xin Bei District, Changzhou City, Jiangsu Province, China
Contact Person Mia Liu

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