Pin Bush Flexible Coupling
- Typical Applications : Medium load scenarios such as general machinery, water pumps, fans, etc.
- Material : Polyurethane or rubber, oil and chemical corrosion resistant, working temperature -35℃~80℃.
- Permissible torque : 100 N·m ~ 50,000 N·m, elastic element life ≥ 50,000 hours.
-
Permissible speed :
≤6000 r/min, high speed requires dynamic balancing.
- INTRODUCTION
- SPECIFICATION
- RELATED
- INQUIRY
Pin Bush Flexible Coupling Technical Specifications
1. Overview
Designed to GB/T 4323-2017 standard, pin bush couplings provide vibration damping and misalignment compensation for medium-duty applications. Ideal for pumps, fans, and light industrial machinery with torque capacities up to 10,000 N·m.
2. Structure & Operation
Hubs: Cast iron/steel with keyway options
Elastic Pins: Nylon/PU material (PA66/PU)
Retainer Plate: Prevents axial displacement
3. Technical Features
| Parameter | Specification |
|---|---|
| Torque Absorption | 10-20% shock load reduction |
| Misalignment | Axial: ±5mm Radial: 2mm Angular: 1° |
| Temperature Range | -20℃~80℃ |
4. Technical Parameters
| Model | Torque | Speed | Shaft Bore |
|---|---|---|---|
| LX1 (HL1) | 16 N·m | 8,500 RPM | 12-30mm |
| LX10 (HL10) | 10,000 N·m | 1,500 RPM | 100-140mm |
5. Applications
HVAC Systems: Fan drives
Food Processing: Conveyor systems
Agriculture: Irrigation pumps
6. Selection & Installation
Torque Formula: T = 9550 × P/n
Alignment: ≤0.2mm radial deviation
Speed Limit: 80% of rated RPM
7. Maintenance Protocol
Inspect pins every 3 months (10% wear limit)
Replace cracked/deformed pins immediately
8. Product Comparison
| Feature | Pin Bush | Gear Coupling |
|---|---|---|
| Maintenance | None | Regular lubrication |
| Cost | Low | High |
9. Compliance Standards
GB/T 4323-2017 (Flexible Pin Couplings)
HG/T 3079-2008 (Plastic Components)
10. Summary
Pin bush couplings offer economical vibration damping for medium-duty applications (≤400kW). Not recommended for heavy shock loads or high-precision alignment requirements. Consider gear couplings for extreme conditions.
| Model | Rated Torque (kN·m) | Max Speed (r/min) | Bore Range (mm) | Allowable Offset | Weight (kg) |
|---|---|---|---|---|---|
| LX1 | 0.25 | 6000 | 12-30 | ±0.5° 0.3mm | 3.2 |
| LX3 | 1.6 | 4500 | 25-55 | ±1.0° 0.5mm | 8.7 |
| LX5 | 6.3 | 3600 | 40-85 | ±1.5° 0.8mm | 18.5 |
Technical Specifications:
Pin Material: Nylon 6.6 with stainless steel core
Flange Material: 45# steel with zinc plating
Temperature Range: -30℃ to +80℃
Protection Class: IP54
Standards: ISO 14691, DIN 740-2
Lubrication: Maintenance-free design
Key Features:
Vibration damping capacity: 30-40%
Shock load absorption: 200% rated torque
Electrically insulated version available
Quick-release design for easy maintenance
* Allowable offset includes angular/radial misalignment
** Torque values based on 20℃ ambient temperature
† Standard bore tolerance: H7/k6
