DPG 45# Steel Split Spider Coupling – High Torque, H7 Bore, German Polyurethane Spider

Factory direct | 45# steel | Black oxide finish | H7 bore precision | German polyurethane spider | 12.9 grade screws | Split design

The Apexcoupling DPG series is a 45# steel split spider coupling (curved jaw / elastomeric type) designed for reliable power transmission in medium to high-speed applications. Featuring a split hub design for easy installation and maintenance, this coupling is constructed from high-strength 45# steel with a black oxide finish for corrosion resistance. The German imported polyurethane spider provides excellent wear resistance, oil resistance, and vibration damping, while the H7 bore tolerance ensures high concentricity and precision shaft fit.

✅ Simple structure, small radial size, light weight, low inertia – ideal for medium to high-speed applications.

Key Technical Specifications

🔧 Custom bores, keyways, and spider hardness available. Contact us with your specifications.

Product Features & Advantages

Product Structure

1. Two 45# Steel Hubs – High-strength carbon steel, precision-machined with curved jaws, black oxide finish.

2. German Polyurethane Spider – The elastic insert that transmits torque, absorbs shock, and compensates for misalignment.

3. Split Hub Design – Allows easy installation and removal without moving connected shafts.

4. 12.9 Grade Clamping Screws – High-strength screws for secure shaft fastening.

💡 The curved jaw profile ensures a press-fit with the spider, eliminating backlash and providing smooth, precise torque transmission. The split design allows for quick installation and maintenance.

Technical Data

Applications

• Metallurgical Equipment – Rolling mills, continuous casting lines

• Mining Machinery – Crushers, conveyors, feeders

• Petroleum & Chemical Equipment – Pumps, compressors, mixers

• Hoisting & Transportation Equipment – Cranes, conveyors, elevators

• Light Industry & Textile Machinery – Spinning, weaving, finishing equipment

• Pumps – Centrifugal, gear, screw, and diaphragm pumps

• Fans & Blowers – Industrial ventilation, air handling

• General Industrial Machinery – Medium to high-speed drives

Why Choose Apex Coupling for DPG Spider Couplings?

FAQ

Q: What is a spider coupling?
A: A spider coupling (also called a jaw coupling or curved jaw coupling) consists of two metal hubs with curved jaws and an elastomeric spider element. The curved jaw profile ensures zero backlash operation.

Q: What material is used for the hubs?
A: The DPG series uses 45# high-strength carbon steel – offering high hardness, high torque capacity, and reliable quality.

Q: What is the spider made of?
A: The spider is made of German imported polyurethane – offering excellent wear resistance, oil resistance, high load capacity, and long service life.

Q: What is the surface treatment?
A: Standard surface treatment is black oxide (blackening) for corrosion resistance.

Q: What is the bore tolerance?
A: Standard bore tolerance is H7 for precision shaft fit and high concentricity.

Q: What grade are the screws?
A: The clamping screws are 12.9 grade – high-strength, smooth, burr-free, and resistant to loosening under vibration.

Q: What does “split design” mean?
A: The split hub design allows the coupling to be installed and removed without moving the connected shafts – significantly reducing maintenance time.

Q: Does the coupling require lubrication?
A: No. The DPG series is maintenance-free – no lubrication required.

Q: What misalignment can the coupling compensate for?
A: The polyurethane spider compensates for radial, angular, and axial deviations.

Q: What are the main applications?
A: Metallurgy, mining, petroleum, chemical, hoisting, transportation, light industry, textile, pumps, fans, and general industrial machinery.

Request a Quote

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