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Fixed Pin Type High Precision Universal Joint Coupling | 42CrMo Alloy Steel | OEM Custom
Model Number
Check below, custom
D20-L42
D23-L52
D25-L59
D32-L74
D36-L87
D20-L67.5
D23-L83
D25-L94.5
D32-L117.5
D36-L139
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
Fixed Pin Type High Precision Universal Joint Coupling – 42CrMo Alloy Steel, OEM Custom
Factory direct | 42CrMo alloy steel | Pin fixing | Torque 4.5–280 N·m | Single or double joint
The Apexcoupling Fixed Pin Type Universal Joint is a high‑precision mechanical coupling designed for reliable torque transmission between misaligned shafts. Featuring a robust pin and block design and constructed from 42CrMo alloy steel, it offers excellent strength, fatigue resistance, and durability. Available in single or double joint configurations, it is ideal for stepper motors, servo motors, and general industrial applications.
✅ OEM/ODM/OBM support – custom bores, lengths, and finishes available.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Apexcoupling |
| Type | Fixed pin type (pin & block) |
| Structure | Universal joint (single or double) |
| Material | 42CrMo alloy steel |
| Shaft fixing method | Pin |
| Bore Diameter | Customizable (consult sales) |
| Rated Torque Range | 4.5 – 280 N·m |
| Maximum Speed | 0 – 4000 rpm (above 1000 rpm requires dynamic balancing) |
| Flexible or Rigid | Flexible |
| Standard or Nonstandard | Standard with custom support |
| Customized support | OEM, ODM, OBM |
| Applicable Industries | Manufacturing plants, machinery repair shops, food & beverage, farms, home use, retail, printing shops, construction, energy & mining |
| Warranty | 1 Year |
| Certificate | ISO9001, BV Certificate |
| MOQ | 1 piece |
| Packaging | Standard export packaging |
| Origin | Guangdong, China |
🔧 Custom bores, lengths, joint angles, and surface finishes available. Contact us with your specifications.
Product Features & Advantages
| Advantage | Benefit |
|---|---|
| 42CrMo Alloy Steel | High strength and toughness after heat treatment; excellent fatigue resistance and impact strength |
| Fixed Pin Design | Simple, reliable construction with secure pin locking; easy maintenance |
| High Precision | Precision‑machined components ensure low backlash and smooth operation |
| Single or Double Joint | Single joint for angular misalignment; double joint for angular + parallel offset |
| Wide Torque Range | 4.5 – 280 N·m covers light to medium‑duty applications |
| High Speed Capability | Up to 4000 rpm with dynamic balancing (over 1000 rpm) |
| Flexible Design | Accommodates angular misalignment, reduces stress on connected equipment |
| OEM/ODM Support | Custom bores, lengths, materials, and branding available |
| ISO9001 & BV Certified | Quality assured for international B2B buyers |
| Low MOQ | 1 piece minimum – ideal for prototyping and small batches |
Product Structure
Two Yokes (Forks) – Precision‑machined from 42CrMo alloy steel.
Center Block with Fixed Pins – The “pin and block” design forms the cross‑shaped joint.
Pin Fixing – Secure locking method for reliable torque transmission.
Single Joint – One universal joint for angular misalignment only.
Double Joint – Two universal joints connected for angular + parallel offset.
Applications
Stepper Motors & Servo Motors – Ideal for precision motion control
CNC Machines – Spindle drives, feed axes
3D Printers & Robotics – Compact, precise power transmission
Encoders & Resolvers – Low‑backlash connections
Packaging Machinery – Reliable, flexible drives
Printing Equipment – Smooth, high‑speed operation
Food & Beverage Processing – With appropriate material options
Construction & Mining Equipment – Durable, shock‑resistant
General Industrial Machinery – Pumps, conveyors, mixers
Why Choose Apex Coupling for Fixed Pin Universal Joints?
| Advantage | Description |
|---|---|
| Factory Direct | Competitive B2B pricing – no middlemen |
| Premium Material | 42CrMo alloy steel – heat treated for strength and durability |
| Precision Manufacturing | High accuracy, low backlash, smooth operation |
| Flexible Configurations | Single or double joint, custom lengths and bores |
| OEM/ODM/OBM Support | Custom designs, materials, and branding |
| ISO9001 & BV Certified | Quality assured manufacturing |
| Fast Delivery | Stock for standard sizes; custom orders 7‑10 days |
| Technical Support | Free sizing and selection assistance |
FAQ
Q: What is a fixed pin type universal joint?
A: It is a universal joint where the cross‑shaped center is formed by a block with fixed pins (pin and block design). This design is simple, reliable, and easy to maintain.
Q: What is the difference between single and double joint?
A: Single joint compensates for angular misalignment only. Double joint (two single joints connected) compensates for both angular misalignment and parallel offset, providing smoother motion.
Q: What is the maximum operating angle?
A: Standard single joint can operate up to 45°. For continuous operation, we recommend ≤30° to maximize service life.
Q: What is the maximum speed?
A: Up to 4000 rpm. For speeds above 1000 rpm, dynamic balancing is required to ensure smooth operation.
Q: What torque range is available?
A: The series covers 4.5 – 280 N·m. Custom sizes for higher torque are available on request.
Q: Can I get a custom bore size?
A: Yes. We offer custom bores, lengths, and keyways. Please provide your shaft diameter and drawing.
Q: Is this coupling suitable for servo motors?
A: Absolutely. The high precision and low backlash design makes it ideal for servo and stepper motor applications.
Request a Quote
Send us your shaft sizes, torque, speed, angle, and joint configuration (single or double). Our engineers will recommend the optimal model and provide a quotation within 24 hours.
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