coupling for water pump
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- jaw coupler
- flexible shaft coupler
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NM Series Jaw Coupling - Cast Iron Water Pump Coupling with Rubber Spider Element
Model Number
NM
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
Our NM series jaw coupling represents the ultimate solution for water pump applications requiring reliable power transmission and exceptional durability. This robust water pump coupling features a precision-engineered jaw design with a specialized rubber spider element that provides superior vibration damping and misalignment compensation. Manufactured from high-grade cast iron and 45# steel with carburizing or blackening surface treatments, this flexible coupling delivers impressive torque transmission from 25 to 12,500 N.m while accommodating shaft sizes from 12-140mm. Specifically designed for pump industry applications with standard code BI104, this water pump coupling ensures smooth operation, minimal maintenance, and long service life even in demanding industrial environments.
Key Features
Heavy-Duty Construction: Cast iron and 45# steel materials for maximum durability
Rubber Spider Element: Excellent vibration absorption and shock damping
High Torque Capacity: 25-12,500 N.m range for various pump applications
Wide Size Range: 12-140mm shaft holes with 50-400mm dimensions
Multiple Surface Treatments: Carburizing and blackening for corrosion resistance
Compact & Lightweight: Easy installation and space-saving design
Pump Industry Standard: BI104 code compliance for reliable performance
Technical Specifications
Parameter | Specification |
---|---|
Body Material | Cast Iron & 45# Steel |
Structure Type | Jaw/Spider |
Shaft Hole Size | 12-140 mm |
Dimensions | 50-400 mm |
Torque Range | 25-12,500 N.m |
Speed Range | 1,500-8,500 RPM |
Surface Treatment | Carburizing, Blackening |
Industry Standard | BI104 |
Advantages & Benefits
Feature | Benefit |
---|---|
Robust Construction | Withstands harsh pump operating conditions |
Vibration Damping | Protects pump and motor from shock loads |
High Torque Transmission | Suitable for various pump power requirements |
Corrosion Resistant | Extended service life in wet environments |
Easy Installation | Simple design reduces maintenance time |
Industry Compliance | Guaranteed compatibility with pump systems |
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Product Show




🚀 Upgrade Your Machinery with Our NM Pump Coupling! 🚀
Product Highlights:
✅ Model: NM50 / 67 / 82 / 97 / 148 / 168 / 194 / 214
✅ Material: Cast Iron Jaw + Rubber Spider
✅ Max Torque: Up to 850 N.m
✅ Shaft Diameter: 12–140 mm
✅ RPM: 1500–8500 r/m
✅ Application: Ideal for pumps, manufacturing plants, and machinery repairs
Why Choose Our NM Coupling?
Compact, lightweight, and easy to install
Excellent for high-speed, high-torque applications
Reduces vibration and shock — no lubrication needed!
Affordable without compromising quality
Perfect for industrial use, repair shops, and OEM support. Get yours today and keep your systems running smoothly! ⚙️💧

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