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DPG Aluminum Jaw Spider Coupling – Clamping Hub, 98ShA PU/Hytrel, Zero Backlash
Model Number
Check below, custom
DPG23-30
DPG23-40
DPG23-55
DPG23-65
DPG23-80
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
DPG Aluminum Jaw Spider Coupling – Clamping Hub, 98ShA PU/Hytrel, Zero Backlash
Factory direct | Aluminum alloy or S45C steel | 98ShA PU/Hytrel spider | Zero backlash | Clamping hubs | Oil-resistant, wear-resistant | Maintenance-free | OEM/ODM/OBM
The Apexcoupling DPG series is a high-performance aluminum jaw spider coupling (also known as a plum coupling or curved jaw coupling) designed for reliable power transmission in demanding industrial applications. Featuring a 98 Shore A polyurethane or Hytrel spider element, this coupling delivers zero backlash operation, excellent vibration damping, and reliable torque transmission. Available in aluminum alloy or S45C steel with clamping hub design, it is the ideal solution for metallurgy, mining, petroleum, chemical, lifting, transportation, light industry, textile, pumps, fans, and other industrial workplaces.
✅ Simple, light, small radial dimensions, low moment of inertia – suitable for middle and high speeds. Torsionally flexible, compensates for angular, radial, and axial shaft offset.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Apexcoupling |
| Model Series | DPG (Jaw Spider / Plum Coupling – Clamping Type) |
| Type | Flexible / Elastomeric / Jaw / Spider |
| Structure | Curved jaw (spider type) |
| Body Material Options | Aluminum alloy (standard) or S45C carbon steel |
| Spider Material | Imported PU (polyurethane) or Hytrel from Bayer |
| Spider Hardness | 98 Shore A |
| Spider Color | Red or white (customizable) |
| Bore Type | Plain or with keyway |
| Fixed Type | Clamping screws |
| Backlash | Zero (zero rotational clearance) |
| Misalignment Compensation | Angular, radial, and axial deviations |
| Vibration Absorption | Yes (PU/Hytrel spider dampens shock and vibration) |
| Lubrication | None required – maintenance-free |
| Surface Treatment | Blackening (for steel) or anodizing (for aluminum) |
| Standard or Nonstandard | Standard with OEM/ODM/OBM support |
| Customized support | OEM, ODM, OBM |
| Applicable Industries | Building material shops, manufacturing plants, machinery repair shops, food & beverage factories/shops, farms, retail, printing shops, construction works, energy & mining |
| Certification | BV, RoHS & ISO9001 |
| Warranty | 1 Year |
| Place of Origin | Guangdong, China |
🔧 Custom bores, keyways, spider hardness, and special materials available. Contact us with your specifications.
Material Options
| Material | Properties | Best For |
|---|---|---|
| Aluminum Alloy | Lightweight, low inertia, corrosion-resistant, high strength-to-weight ratio | High-speed applications, precision motion, general industry |
| S45C Carbon Steel | High strength, high hardness, wear resistance, black oxide finish | Heavy-duty industrial, high torque, harsh environments |
Spider Material Options – Bayer Imported PU or Hytrel
| Spider Material | Properties | Best For |
|---|---|---|
| PU (Polyurethane) – 98ShA | High abrasion resistance, oil-resistant, wear-resistant, excellent damping, long lifespan | General industrial, metallurgy, mining, pumps, fans |
| Hytrel (Polyester Elastomer) – 98ShA | Higher temperature resistance, superior chemical resistance, excellent dynamic properties | High-temperature applications, chemical exposure, demanding environments |
💡 Both materials are imported from Bayer – ensuring premium quality, consistent performance, and long service life.
Product Features & Advantages
| Advantage | Benefit |
|---|---|
| Zero Rotational Clearance | No backlash – ideal for positive and negative rotation, frequent starting, and reversing drives |
| 98ShA PU/Hytrel Spider | High torsional rigidity with excellent damping, oil/water resistance, and wear resistance |
| Clamping Hub Design | Secure shaft locking, easy installation and adjustment, no keyway required (plain bore option) |
| Lightweight Aluminum Alloy | Low moment of inertia, small radial dimensions – suitable for middle and high speeds |
| Torsional Flexibility | Compensates for angular, radial, and axial shaft offset – protects bearings and seals |
| High-Strength Elastomer | Big load carrying capacity, long lifespan, safe and reliable |
| Maintenance-Free | No lubrication required – reduces operating costs and maintenance schedules |
| Multiple Material Options | Aluminum alloy or S45C steel – choose based on your environment and load |
| Bayer Imported Spider | Premium quality polyurethane or Hytrel – consistent performance, long service life |
| OEM/ODM/OBM Support | Custom bores, keyways, spider hardness, and materials available |
| BV, RoHS & ISO9001 Certified | Quality assured for international buyers |
Product Structure
Two Hubs – Precision-machined from aluminum alloy or S45C steel with curved jaws.
98ShA PU/Hytrel Spider – Red or white elastomer that transmits torque, absorbs shock, and compensates for misalignment.
Clamping Screws – Secure fastening to shafts.
💡 The clamping hub design allows for easy installation and removal without special tools. The curved jaw profile ensures a press-fit with the spider, eliminating backlash and providing smooth, precise torque transmission.
Technical Data
| Parameter | Value |
|---|---|
| Material | Aluminum Alloy or S45C Steel |
| Spider Material | Bayer Imported PU or Hytrel (98ShA) |
| Backlash | Zero |
| Lubrication | None Required |
| Spider Color | Red or White |
| Bore Type | Plain or Keyway |
| Fixed Type | Clamping Screws |
| Surface Treatment | Blackening (steel) or Anodizing (aluminum) |
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
Building Material Shops – Material handling equipment
Food & Beverage Processing – With appropriate spider material
Construction Machinery – Reliable drives in harsh environments
Energy & Mining – Conveyors, feeders, crushers
General Industrial Machinery – Middle to high-speed drives
Why Choose Apex Coupling for DPG Aluminum Jaw Spider Couplings?
| Advantage | Description |
|---|---|
| Factory Direct | Competitive B2B pricing – no middlemen |
| Premium Materials | Aluminum alloy or S45C steel – choose based on your needs |
| Bayer Imported Spider | PU or Hytrel – premium quality, long service life |
| 98ShA Hardness | Optimal balance of torsional rigidity and damping |
| Zero Backlash | Precision performance for reversing and frequent start/stop applications |
| Clamping Hub Design | Secure fastening, easy installation |
| Maintenance-Free | No lubrication required – reduces operating costs |
| OEM/ODM/OBM Support | Custom bores, keyways, materials, and branding |
| BV, RoHS & ISO9001 Certified | Quality assured for international buyers |
FAQ
Q: What is a jaw spider coupling?
A: A jaw spider coupling (also called a plum 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 does “98ShA” mean?
A: 98ShA refers to the Shore A hardness of the spider. 98 Shore A provides high torsional rigidity while still offering excellent vibration damping and misalignment compensation.
Q: What spider materials are available?
A: We offer imported PU (polyurethane) and Hytrel from Bayer – both premium-quality elastomers with excellent wear resistance, oil resistance, and long service life.
Q: What materials are available for the hubs?
A: We offer aluminum alloy (lightweight, low inertia) and S45C carbon steel (high strength, high hardness).
Q: Does the coupling have backlash?
A: No. The DPG series features zero backlash – no rotational clearance, suitable for positive and negative rotation, frequent starting, and reversing drives.
Q: Is the coupling maintenance-free?
A: Yes. The DPG series requires no lubrication – the PU/Hytrel spider is self-lubricating, reducing operating costs and maintenance schedules.
Q: Can the coupling compensate for misalignment?
A: Yes. The spider compensates for angular, radial, and axial deviations.
Q: What is the clamping hub design?
A: The clamping hub uses clamping screws to secure the coupling to the shaft – providing even clamping force, easy installation, and simple adjustment.
Q: Can I get a custom coupling?
A: Yes. We offer OEM, ODM, and OBM support – custom bores, keyways, spider hardness, materials, and branding available.
Q: What certifications do you have?
A: We are BV, RoHS & ISO9001 certified – quality assured for international buyers.
Request a Quote
Send us your bore size, material preference, torque, speed, and application details. Our engineers will recommend the optimal model and provide a quotation within 24 hours.
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