The plum coupling represents a high-efficiency transmission component, consisting of metallic claw segments and an elastomeric material, tailored for medium-speed and medium-torque transmission setups. Its distinctive plum-shaped resilient component proficiently rectifies shaft misalignment, dampens vibrations, and guarantees seamless functioning of the equipment.
Core Structure
High Torque Transmission: Made of 45# steel or cast steel, with strong load-bearing capacity, torque range 25-12500 N·m.
Vibration and Noise Reduction: Polyurethane or nylon elastomer absorbs vibrations and reduces noise, extending equipment lifespan.
Maintenance-Free Design: Simple structure, no lubrication required, low maintenance cost.
Shaft Misalignment Compensation: Compensates for axial, radial, and angular misalignment, requiring low installation precision.
Resistant to Harsh Environments: Operating temperature range -35℃ to +80℃, oil-resistant and corrosion-resistant.
Structural Features
- Split Design: Composed of two metal claw plates and an intermediate elastomer, easy to install and replace.
- Strong misalignment compensation capability
- Elastic Element: Optional number of plum petals (4/6/8/10/12 petals) with adjustable hardness for different working conditions
- Multiple Connection Methods: Supports keyway, expansion sleeve, clamping screw, etc., flexibly adapting to shaft diameters.
Technical Parameters
Product Parameter Information
Application Scenarios
Installation & Maintenance
Installation & Maintenance
Installation Steps:
- Clean the shaft end and coupling bore, apply grease.
- Align the axes and tighten the bolts evenly to the specified torque.
Maintenance Tips
- Regularly check elastomer wear and replace promptly.
- Avoid overload operation to ensure equipment safety.
Customization Services
Support non-standard design, customizable shaft diameter, material, elastomer hardness, and special installation methods.
Warranty & After-Sales
Warranty Period: 1 year (under normal use).
After-Sales Service: Provide technical support, parts replacement, and troubleshooting solutions.
FAQ
Q: How do I select the right model of plum coupling?
A:Choose based on the following parameters:
Nominal torque (must be greater than the actual working torque);
Shaft diameter (matching the shaft diameters of the motor and equipment);
Speed requirement (not exceeding the allowable speed of the coupling);
Shaft misalignment type (compensation needs for axial, radial, or angular misalignment);
Working environment (temperature, corrosion, vibration frequency, etc.).
Q: Does the plum coupling require strict shaft alignment? What should I note during installation?
A:The coupling can compensate for a certain range of shaft misalignment (axial ±1-5mm, radial ±0.2-1.5mm, angular ±1°-3°, specific to the model). However, basic alignment is still required to reduce elastomer wear.
Installation Notes:
Ensure the shaft end and coupling bore are clean and free of debris;
Use a torque wrench to tighten the connecting bolts to the specified torque;
Avoid striking the elastomer to prevent damage.
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