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Dongguan HydroBlue Co., Ltd.

  • China,Dongguan ,Guangdong
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China Flexible REX OMEGA Coupling for Agricultural Irrigation Water Pump
China Flexible REX OMEGA Coupling for Agricultural Irrigation Water Pump

  1. China Flexible REX OMEGA Coupling for Agricultural Irrigation Water Pump
  2. China Flexible REX OMEGA Coupling for Agricultural Irrigation Water Pump
  3. China Flexible REX OMEGA Coupling for Agricultural Irrigation Water Pump
  4. China Flexible REX OMEGA Coupling for Agricultural Irrigation Water Pump
  5. China Flexible REX OMEGA Coupling for Agricultural Irrigation Water Pump
  6. China Flexible REX OMEGA Coupling for Agricultural Irrigation Water Pump
  7. China Flexible REX OMEGA Coupling for Agricultural Irrigation Water Pump

Flexible REX OMEGA Coupling for Agricultural Irrigation Water Pump

  1. MOQ: 1
  2. Price: 35
  3. Get Latest Price
Torque 62-6500
Pump Model. Mc/MD/G Sg/CD8/Bbtd/Msd/Mca/Mce/Mcv
Material Carbon Steel+Plastic
Material 1 Cast Iron, Wear-Resistant Cast Iron, Cast Steel
Pump Model APP/Wpp/EPP/Aup/Zpp/CPT/Ohhl
Types of Welding Parts OEM/ODM
Material 2 Stainless Steel, Duplex Ss, Cast Alloy Steel
Type Coupling
Material Standard ASTM, ANSI, SAE, Uns, DIN, En, ISO, Toct
Certificate ISO9001:2015, ISO14001:2004, API Specification Q1
Structure Flexible
Pump Package Carton and Wooden Cases
Mould Investment Casting Mould, Sand Casting Mould
Speed 1000-5400
Origin China
Testing Dynamic Balancing
HS Code 84139100
Specification According to the drawings
Bore Diameter 10-165
Model NO. Coupling
Transport Package Carton and Wooden Cases
Production Capacity 10, 000 Tons Per Year

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  1. Product Details
  2. Company Details

Product Specification

Torque 62-6500 Pump Model. Mc/MD/G Sg/CD8/Bbtd/Msd/Mca/Mce/Mcv
Material Carbon Steel+Plastic Material 1 Cast Iron, Wear-Resistant Cast Iron, Cast Steel
Pump Model APP/Wpp/EPP/Aup/Zpp/CPT/Ohhl Types of Welding Parts OEM/ODM
Material 2 Stainless Steel, Duplex Ss, Cast Alloy Steel Type Coupling
Material Standard ASTM, ANSI, SAE, Uns, DIN, En, ISO, Toct Certificate ISO9001:2015, ISO14001:2004, API Specification Q1
Structure Flexible Pump Package Carton and Wooden Cases
Mould Investment Casting Mould, Sand Casting Mould Speed 1000-5400
Origin China Testing Dynamic Balancing
HS Code 84139100 Specification According to the drawings
Bore Diameter 10-165 Model NO. Coupling
Transport Package Carton and Wooden Cases Production Capacity 10, 000 Tons Per Year
High Light carbon steel flexible shaft couplingplastic coupling for water pumpagricultural irrigation pump coupling
REXNORD Pump Coupling – Installation, Alignment & How to Order

About Dongguan HydroBlue Co., Ltd.

DONGGUAN HydroBlue CO.,LTD. operates as a technology-focused enterprise offering full-spectrum technical solutions across fluid machinery, fluid engineering, industrial automation, and power conversion systems. Our 8-strong engineering team brings together expertise in fluid mechanics, electrical engineering, and electronic engineering to bridge the gap between R&D and commercial production. Ongoing joint development with Jiangsu University, Chinese Academy of Sciences, and Guangdong University of Technology ensures our processes and products stay ahead of industry requirements worldwide. Jiangsu University National Research Center of Pumps contributes to coupling torsional stiffness analysis and pump-drive train natural frequency evaluation for optimized REXNORD coupling selection; Chinese Academy of Sciences develops advanced surface hardening technologies and corrosion-resistant coatings for coupling hub and sleeve service life extension; Guangdong University of Technology integrates laser alignment verification and thermal growth compensation into our coupling installation support tools.

Let us know the pump model and coupling specifications you require — our engineers will cross-reference compatibility and respond with a professional technical assessment.

OUR BRANDS & SERVICES

Our proprietary brand provides complete technical solutions across the fluid machinery and engineering spectrum. Supported by our suite of proprietary technologies and product brands, we provide clients with premium technical consultation, sales assistance, and bundled system solutions — covering pumps, frequency converters, servo drives, PLC-HMI, industrial control cabinets, motors, mechanical seals and systems, couplings, gearboxes, and comprehensive engineering project services (overseas on-site 3D scanning reverse molding of pump replacement parts, and field debugging by our dispatched engineers internationally).

Coupling Installation Guide
  1. Inspect Shaft Ends — Clean both the motor shaft and pump shaft end faces; remove burrs, corrosion, and old keyway debris
  2. Fit Hubs on Shafts — Slide the coupling hubs onto their respective shafts; for interference-fit hubs, heat the hub evenly before mounting — never hammer a coupling hub onto a shaft
  3. Align the Shafts — Rough-align the motor and pump using a straight edge across the hub faces, then fine-align using a dial indicator or laser alignment tool. Achieve both angular and parallel alignment within the coupling's rated misalignment capacity
  4. Install Flex Element — Mount the flex element (grid spring, elastomer spider, or disc pack) between the hub flanges or sleeves; ensure it is centered and not pinched between the hubs
  5. Install Guards & Coupling Cover — Install the coupling guard before operating; rotating couplings are a serious pinch-point hazard
  6. Operate & Re-check Alignment — Run the pump at operating speed and temperature, then verify alignment again; thermal expansion often shifts the relative position of motor and pump
Pump Shaft Alignment Tolerance

Pump Speed (RPM)

Angular Misalignment (mm/100mm)

Parallel Offset (mm)

≤ 1,000

≤ 0.10

≤ 0.10

1,000 – 2,000

≤ 0.07

≤ 0.07

2,000 – 4,000

≤ 0.05

≤ 0.05

> 4,000

≤ 0.03

≤ 0.03

Common Coupling Failure Signs
  • Elastomer spider wear / cracking — Visible wear on spider legs; pump vibration increases; replace spider without removing hubs
  • Grid spring fatigue — Broken or deformed grid springs; coupling rattle at low speed; replace grid and lubricant
  • Disc pack cracking — Lamination separation or through-cracks in disc pack; replace disc pack; check alignment before restart
  • Gear tooth wear — Tooth profile wear on gear coupling; vibration and backlash increase; replace gear coupling; investigate lubrication
  • Hub bore wear — Fretting or galling inside hub bore on shaft; hub keyway wallowed; replace hub; inspect shaft for damage
How to Order
  1. Pump & Motor Make/Model — Identify the pump model and motor frame to determine shaft sizes, speed, and torque requirements
  2. Coupling Type Required — Grid, jaw, disc, or gear coupling; specify if replacing an existing REXNORD coupling
  3. Shaft Sizes — Pump shaft diameter and motor shaft diameter; specify bore tolerance and keyway size (metric or inch)
  4. Service Factor — Duty cycle information for correct coupling sizing (continuous, intermittent, shock load)
  5. Flex Element Material — Standard NBR, Hytrel/urethane, FKM, or stainless disc pack
  6. Hub Material — Forged steel (standard), SS 304, SS 316, or ductile iron
  7. Quantity — Single replacement or multiple couplings for pump fleet standardization
  8. Delivery — 10–25 days after deposit; standard sizes in stock

Payment: 70% T/T deposit, balance against copy of B/L. Small orders via PayPal or Western Union.

FAQ

Q1: Can I replace only the flex element of a REXNORD coupling without replacing the hubs?

A: Yes, the flex element (elastomer spider, grid spring, or disc pack) is a replaceable wear component. The hubs can remain on the shafts unless the hub bore, keyway, or engagement surface is damaged. For grid couplings, also replace the grid lubricant when changing the grid spring.

Q2: What is the most common cause of coupling failure in pump drives?

A: Shaft misalignment is the most frequent cause. Even minor alignment deviation accelerates flex element wear, generates vibration, and overloads pump bearings and seals. Misalignment can be caused by incorrect initial installation, thermal growth, pipe strain on the pump casing, or foundation settlement. Regular alignment checks at each installation event and after pump maintenance are the best prevention.

Q3: Do you supply coupling guards compatible with REXNORD couplings?

A: Yes. We can supply sheet metal or mesh coupling guards to the dimensions of your coupling assembly, compliant with ISO 13857 and OSHA guarding standards. Provide the installed coupling OD and guard length (distance between motor and pump hubs) and we will quote the appropriate guard.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer,Trading Company

  • Year Established:

    2006

  • Total Annual:

    $10 Million-US$50 Million

  • Employee Number:

    50~100

  • Ecer Certification:

    Verified Supplier

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Get in touch with us

  • Reach Us
  • Dongguan HydroBlue Co., Ltd.
  • Room 1904, Building 1, Zhongtang Tianan Digital City, No.89 Jinyuan Road, Zhongtang Town,Dongguan City, Guangdong Province, China.
  • https://www.pumpsparesparts.com/

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