Economical CNC Plum Coupling | Aluminum Alloy, Clamping, OEM Wholesale

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Economical CNC Plum Coupling – Aluminum Alloy, Clamping Structure, Flexible Shaft Coupling

Model Number
Check below, custom

DFC-14*22
DFC-20*25
DFC-20*30
DFC-25*30
DFC-25*34
DFC-30*35
DFC-30*40
DFC-35*32
DFC-35*50
DFC-40*50
DFC-40*55
DFC-40*66
DFC-45*55
DFC-50*55

DFC-55*49
DFC-55*78
DFC-65*80
DFC-65*90
DFC-105*140
DFC-120*160

Product Description

Economical CNC Plum Coupling – Aluminum Alloy, Clamping Structure, Flexible Shaft Coupling

The Apexcoupling CNC Plum Coupling is a cost-effective flexible shaft coupling designed for precision power transmission in CNC machines, servo motors, stepper motors, and general industrial applications. Featuring a clamping structure for secure shaft fixation and constructed from high-strength aluminum alloy with an anodized surface treatment, this coupling delivers excellent corrosion resistance, lightweight durability, and reliable performance. The plum (spider/jaw) design provides vibration damping, misalignment compensation, and zero backlash operation – making it the ideal choice for building material shops, manufacturing plants, machinery repair shops, construction works, energy & mining, and metallurgy.

✅ Best-selling economical solution – high quality at wholesale price. Customizable OEM/ODM/OBM support available.

Key Technical Specifications

Parameter	Value
Brand	Apexcoupling
Product Name	Shaft Coupling / Plum Coupling / Flexible Spline Shaft Coupling
Type	Flexible / Elastomeric / Jaw / Spider / Plum
Structure	Clamping structure
Body Material	High-strength aluminum alloy
Surface Treatment	Anodizing (optional – custom color available)
Standard or Nonstandard	Standard with OEM/ODM/OBM support
Flexible or Rigid	Flexible
Backlash	Zero (zero rotational clearance)
Misalignment Compensation	Angular, radial, and axial
Vibration Absorption	Yes (elastomeric spider element)
Customized support	OEM, ODM, OBM
Applicable Industries	Building material shops, manufacturing plants, machinery repair shops, retail, construction works, energy & mining, metallurgy
Feature	High accuracy
Warranty	1 Year
Certification	ISO9001, BV Certificate
Place of Origin	Guangdong, China

🔧 Custom bore sizes, outer diameters, lengths, anodizing colors, and spider hardness available. Contact us with your specifications.

Product Features & Advantages

Advantage	Benefit
High-Strength Aluminum Alloy	Lightweight, corrosion-resistant, excellent strength-to-weight ratio – reduces inertia for faster response
Clamping Structure	Secure shaft fixation, easy installation, even clamping force – no shaft damage
Anodized Surface Treatment	Enhanced corrosion resistance, improved wear resistance, professional appearance
Plum (Spider/Jaw) Design	Zero backlash, excellent vibration damping, compensates angular, radial, and axial misalignment
High Accuracy	Precision machining ensures accurate shaft alignment and smooth operation
Cost-Effective	Economical solution without compromising quality – best-selling choice for budget-conscious buyers
Flexible Operation	Absorbs shocks and vibrations – protects connected equipment
Maintenance-Free	No lubrication required – reduces operating costs
OEM/ODM/OBM Support	Custom bores, sizes, colors, and branding available
Wholesale Price	Factory direct – competitive pricing for bulk orders
ISO9001 & BV Certified	Quality assured for international buyers

Product Structure

Two Aluminum Hubs – High-strength aluminum alloy, precision-machined, anodized finish.
Elastomeric Spider Element – Polyurethane/rubber insert that transmits torque, absorbs shock, and compensates for misalignment.
Clamping Screws – Secure shaft fastening with even clamping force.

💡 The clamping structure uses tightening screws to compress the hub onto the shaft, providing secure fixation without damaging the shaft surface. The plum (spider/jaw) design ensures zero backlash and smooth torque transmission.

Applications

CNC Machines – Spindle drives, feed axes, precision positioning
Servo Motors – High-precision motion control, zero backlash requirement
Stepper Motors – Accurate step transmission, no lost motion
3D Printers – Lightweight, precise shaft connections
Building Material Shops – Material handling equipment
Manufacturing Plants – General power transmission
Machinery Repair Shops – Replacement and upgrade parts
Construction Machinery – Reliable drives in demanding environments
Energy & Mining – Conveyors, feeders, light drives
Metallurgical Equipment – Rolling mills, continuous casting lines
Printing Machinery – Register control, high-speed operation

Why Choose Apex Coupling for CNC Plum Couplings?

Advantage	Description
Factory Direct	Competitive wholesale pricing – no middlemen
Premium Aluminum Alloy	Lightweight, corrosion-resistant, high strength
Clamping Structure	Secure shaft fixation, easy installation
Anodized Finish	Enhanced durability and professional appearance
Zero Backlash	Precision performance for servo and stepper motors
Cost-Effective	Best-selling economical solution
OEM/ODM/OBM Support	Custom bores, sizes, colors, and branding
ISO9001 & BV Certified	Quality assured for international buyers

FAQ

Q: What is a plum coupling?
A: A plum coupling (also called a spider coupling, jaw coupling, or flexible shaft coupling) consists of two metal hubs with curved jaws and an elastomeric spider element. The design provides zero backlash, vibration damping, and misalignment compensation.

Q: What material is used?
A: The hubs are made of high-strength aluminum alloy with an anodized surface treatment for corrosion resistance and durability.

Q: What is a clamping structure?
A: A clamping structure uses tightening screws to compress the hub onto the shaft, providing secure fixation without damaging the shaft surface. It ensures even clamping force and easy installation.

Q: Does the coupling have backlash?
A: No. The plum coupling features zero backlash – no rotational clearance, suitable for servo motors, stepper motors, and precision positioning.

Q: Can the coupling compensate for misalignment?
A: Yes. The elastomeric spider compensates for angular, radial, and axial deviations.

Q: Is the coupling maintenance-free?
A: Yes. No lubrication required – reduces operating costs and maintenance schedules.

Q: Can I get a custom coupling?
A: Yes. We offer OEM, ODM, and OBM support – custom bores, sizes, anodizing colors, and branding available.

Q: What industries is this coupling suitable for?
A: CNC machines, servo motors, stepper motors, 3D printers, building material shops, manufacturing plants, machinery repair shops, construction, energy & mining, and metallurgy.

Q: What is the warranty?
A: 1 Year – quality assured.

Request a Quote

Send us your bore size, outer diameter, length, and application details. Our engineers will recommend the optimal model and provide a quotation within 24 hours.