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DFCG Series SUS304 Stainless Steel Flexible Clamp Plum Coupling | Zero Backlash Precision Motor Shaft Connector

Model Number
Check below, custom

D14-L22-Bore(3~6)
D20-L25-Bore(3~10)
D20-L30-Bore(3~10)
D25-L30-Bore(4~14)
D25-L34-Bore(4~14)
D30-L35-Bore(5~16)
D30-L40-Bore(5~16)
D35-L32-Bore(5~18)
D35-L50-Bore(5~19)
D40-L50-Bore(6~24)
D40-L55-Bore(6~24)
D40-L66-Bore(6~24)
D45-L55-Bore(8~25)
D45-L66-Bore(8~25)
D50-L55-Bore(8~25)

D55-L49-Bore(12~32)
D55-L78-Bore(12~32)
D65-L80-Bore(14~40)
D65-L90-Bore(14~40)
D80-L114-Bore(14~45)
D95-L126-Bore(14~45)

Product Description

DFCG Series SUS304 Stainless Steel Precision Clamp Plum Coupling

Zero-Backlash Flexible Shaft Coupler with Polished SUS304 Hubs & Imported PU Spider

The DFCG Series Stainless Steel Clamp Plum Coupling is a high-precision, zero-backlash flexible shaft coupling specifically engineered for high-performance motion control, servo motor systems, and cleanroom automation equipment. Constructed with polished SUS304 stainless steel hubs and high-grade imported polyurethane (PU) elastomer spiders, this coupling delivers exceptional dynamic balancing, high torque delivery, superior vibration absorption, and multi-axis misalignment compensation. Featuring a split detachable clamp-screw locking arrangement and H7 precision bore manufacturing, the DFCG series ensures secure shaft retention, high concentricity, and corrosion-resistant reliability.


Key Advantages & Features

  • Premium Polished SUS304 Stainless Steel: Hubs are manufactured from high-grade SUS304 stainless steel with a polished surface finish, offering high torque capacity, outstanding corrosion resistance, and long-term mechanical stability.
  • Zero Rotational Clearance: High-precision jaw tooth design eliminates angular backlashes, rendering it perfect for high-frequency forward and reverse positioning control.
  • German Imported Polyurethane (PU) Spider: High-resilience PU spider element offers superior resistance to wear, oil, and chemical breakdown while insulating electrical currents and absorbing motor shock vibration.
  • H7 Precision Shaft Bore Tolerance: Inner bore tolerance is strictly controlled within H7 precision standards, delivering maximum shaft concentricity, reduced dynamic runout, and high clamping force.
  • Multi-Directional Displacement Compensation: Efficiently cushions mechanical impacts while compensating for radial, angular, and axial shaft misalignments.
  • Detachable Clamp Screw Structure: Non-destructive clamping configuration ensures easy assembly and disassembly without scarring drive shafts, even in compact machine spaces.
  • Wide Thermal Operational Range: Operates reliably across ambient temperatures ranging from -35°C to 80°C without loss of elastic properties.

Technical Specifications

ParameterSpecification Details
Product Series / NameDFCG Series Stainless Steel Clamp Plum Flexible Coupling
Hub MaterialRegular Premium SUS304 Stainless Steel
Hub Surface FinishPrecision Polished / Anti-Corrosion Surface Finish
Elastomer Spider MaterialGerman Imported Polyurethane (PU) Cushion Pad
Rotational ClearanceZero Backlash (Suitable for Rapid Reversing & Dynamic Motion)
Bore Precision ToleranceH7 Standard Bore Tolerance Grade
Fastening MethodSplit Detachable Clamp-Screw Style Locking
Operating Temperature Range-35°C to +80°C
Maintenance & LubricationMaintenance-Free Design (No Lubrication Required)
Applicable Drive MotorsServo Motors, Stepper Motors, CNC Spindles, Linear Actuators

Applications & Machinery Compatibility

Owing to its high mechanical accuracy, cleanroom suitability, and corrosion resistance, the DFCG stainless steel plum coupling is widely deployed across automated and specialized industrial drive systems:

  • Precision Automation Drives: Servo motor shaft connections, stepping motors, optical encoders, and CNC ball screws.
  • CNC & Woodworking Equipment: CNC machine tools, precision engraving machinery, and automated woodworking lines.
  • Food & Pharmaceutical Packaging: Food processing machinery, sanitary packaging equipment, and medical cleanroom systems.
  • Semiconductor & Solar Energy: Photovoltaic power equipment, semiconductor handling machinery, and electronic PCB lines.
  • Heavy & Processing Machinery: Printing machinery, metallurgical equipment, chemical machinery, and rail transit systems.

Customization Options & Direct Manufacturer Benefits

At ApexCoupling, as a direct source manufacturer, we maintain extensive semi-finished inventory to support fast lead times, sample testing, and OEM/ODM customizations according to customer technical drawings.

Our Service & Customization Offerings:

  • Custom metric and inch inner shaft bore diameter combinations.
  • Standard DIN / JIS shaft keyway machining upon request.
  • Custom spider hardness levels and color coding.
  • Private logo laser etching, customized catalog selection support, and volume tier pricing discounts.

To obtain technical catalogs or request a quick price quotation, please contact our engineering support team with your required model specifications, bore dimensions, and order volume.


How to Order / Get a Fast Quote

Looking for reliable DFCG stainless steel clamp plum couplings or OEM custom motor shaft connectors? Contact our sales engineering team today!

polished stainless steel jaw coupling, H7 inner bore tolerance shaft coupling, imported PU spider flexible coupling, servo motor clamp shaft connector

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DFCG stainless steel coupling, SUS304 clamp plum coupling, zero backlash precision motor coupler

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