Industry-Verified Manufacturing Data (2026)

Drive Coupling

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Drive Coupling used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Drive Coupling is characterized by the integration of Hub and Flexible Element. In industrial production environments, manufacturers listed on CNFX commonly emphasize Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A mechanical component that connects two rotating shafts to transmit torque while accommodating misalignment in the polishing spindle assembly.

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Product Specifications

Technical details and manufacturing context for Drive Coupling

Definition
In a polishing spindle assembly, the drive coupling is a critical component that connects the motor shaft to the spindle shaft, transmitting rotational power and torque while compensating for minor axial, radial, and angular misalignments between the two shafts. It ensures smooth power transmission and protects both the motor and spindle from vibration and shock loads during polishing operations.
Working Principle
The drive coupling transmits torque from the driving shaft (motor) to the driven shaft (spindle) through mechanical engagement of its components. It maintains connection while allowing for slight relative movement between shafts due to flexible elements (like elastomers, springs, or metallic discs) that absorb misalignment, vibration, and thermal expansion, ensuring continuous rotation without binding or excessive wear.
Common Materials
Steel, Aluminum alloy, Elastomer (e.g., polyurethane)
Technical Parameters
  • Bore diameter for shaft connection (mm) Per Request
Components / BOM
  • Hub
    Connects to the shaft via keyway or clamp, transmitting torque
    Material: steel
  • Flexible Element
    Absorbs misalignment and vibration between shafts
    Material: elastomer or metallic spring
  • Fasteners
    Secures the coupling to shafts and holds components together
    Material: steel
Engineering Reasoning
0-150 N·m torque transmission, ±0.5° angular misalignment tolerance, 0-6000 RPM rotational speed
Torque exceeding 180 N·m causes permanent deformation, angular misalignment beyond 1.2° induces cyclic bending stress exceeding 250 MPa, rotational speed above 7200 RPM creates centrifugal forces exceeding 15 kN
Design Rationale: Fatigue failure from cyclic bending stress due to misalignment-induced alternating loads, torsional shear stress exceeding yield strength of 4140 steel (415 MPa), resonance at critical speed of 6500 RPM causing amplitude amplification
Risk Mitigation (FMEA)
Trigger Shaft misalignment exceeding 0.8° during assembly
Mode: Cyclic bending fatigue at coupling flexing elements
Strategy: Laser alignment verification during installation with 0.1° tolerance, flexible element design with 10⁷ cycle fatigue life at 0.5° misalignment
Trigger Torque overload spike to 200 N·m during polishing wheel jam
Mode: Shear failure at coupling keyway interface
Strategy: Torque limiter with 160 N·m slip clutch, keyway design with 1.5 safety factor against 415 MPa shear yield strength

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Drive Coupling.

polishing spindle drive coupling flexible shaft coupling for machinery steel aluminum elastomer coupling torque transmission coupling manufacturing misalignment compensating drive component

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Polishing Spindle Assembly
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Rotary Spindle Head
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Agitator
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Eccentric Weight Assembly
View system integration details

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 10 bar
other spec: Max torque: 500 Nm, Max misalignment: ±3°, Max speed: 3000 rpm
temperature: -20°C to 120°C
Media Compatibility
✓ Water-based polishing slurry ✓ Ceramic abrasive media ✓ Stainless steel shafts
Unsuitable: High-concentration acidic or caustic chemical environments
Sizing Data Required
  • Shaft diameter (mm)
  • Required torque transmission (Nm)
  • Maximum allowable misalignment (degrees)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Misalignment fatigue
Cause: Angular, parallel, or axial misalignment between connected shafts causing cyclic stress, vibration, and premature material fatigue in coupling components
Lubrication failure
Cause: Insufficient, contaminated, or degraded lubricant in gear or grid couplings leading to increased friction, wear, overheating, and eventual seizure or tooth failure
Maintenance Indicators
  • Excessive vibration or audible knocking during operation indicating misalignment or component wear
  • Visible grease leakage or metallic particles around coupling housing suggesting seal failure or internal component degradation
Engineering Tips
  • Implement laser alignment during installation and periodic verification to maintain shaft alignment within manufacturer specifications
  • Establish and follow a lubrication schedule using correct lubricant type/quantity, and monitor lubricant condition for contamination

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems ANSI/AGMA 9002-C16 - Flexible Couplings - Keyless Fits DIN 740-2 - Flexible Shaft Couplings - Requirements and Testing
Manufacturing Precision
  • Bore Diameter: +/-0.025mm
  • Parallelism of Mounting Faces: 0.05mm
Quality Inspection
  • Hardness Testing (Rockwell C Scale)
  • Dynamic Balancing Test (ISO 1940-1 Grade G6.3)

Factories Producing Drive Coupling

Verified manufacturers with capability to produce this product in China

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✓ 92% Supplier Capability Match Found

P Procurement Specialist from United States Feb 24, 2026
★★★★★
"Testing the Drive Coupling now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
T Technical Director from United Arab Emirates Feb 21, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
P Project Engineer from Australia Feb 18, 2026
★★★★★
"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Drive Coupling meets all ISO standards."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

18 sourcing managers are analyzing this specification now. Last inquiry for Drive Coupling from Brazil (1h ago).

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Frequently Asked Questions

What materials are used in this drive coupling?

This drive coupling is constructed from steel for strength, aluminum alloy for lightweight durability, and elastomer (such as polyurethane) for flexibility to accommodate misalignment.

How does this coupling accommodate shaft misalignment?

The coupling uses a flexible elastomer element between hubs to absorb angular, parallel, and axial misalignment while maintaining efficient torque transmission in polishing spindle assemblies.

What are the main components in the BOM for this drive coupling?

The bill of materials includes fasteners for secure assembly, a flexible elastomer element for misalignment compensation, and precision hubs that connect to the rotating shafts.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

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