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REXNORD OMEGA Coupling
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Flexible Elastomeric REX VIVA Coupling For Industrial Water Treatment Pump
Product Details
Model NO.:
Coupling
Torque:
62-6500
Bore Diameter:
10-165
Speed:
1000-5400
Structure:
Flexible
Material:
Carbon Steel+Plastic
Type:
Coupling
Pump Model:
APP/Npp/Wpp/EPP/Aup/Zpp/CPT/Ohhl
Pump Package:
Carton And Wooden Cases
Testing:
Dynamic Balancing
Types Of Welding Parts:
OEM/ODM
Material Standard:
ASTM, ANSI, SAE, Uns, DIN, En, ISO, Toct
Material 1:
Cast Iron, Wear-Resistant Cast Iron, Cast Steel
Material 2:
Stainless Steel, Duplex Ss, Cast Alloy Steel
Certificate:
ISO9001:2015, ISO14001:2004, API Specification Q1
Mould:
Investment Casting Mould, Sand Casting Mould
Pump Model.:
Mc/MD/G Sg/CD8/Bbtd/Msd/Mca/Mce/Mcv
Transport Package:
Carton And Wooden Cases
Specification:
According To The Drawings
Origin:
China
HS Code:
84139100
Production Capacity:
10, 000 Tons Per Year
Highlight:
165mm submersible water pump
,industrial water treatment pump
,auto coupling submersible pump
Payment & Shipping Terms
Minimum Order Quantity
1
Price
35
Product Description
REXNORD Pump Coupling – Material Selection, Sizing & Service Conditions
About Dongguan HydroBlue Co., Ltd.
DONGGUAN HydroBlue CO.,LTD. is a technology-driven enterprise delivering integrated solutions in fluid machinery, fluid engineering, industrial automation, and variable frequency drive systems. Our team of 8 professionals specializes in fluid engineering, electrical engineering, and electronic engineering, bridging applied research and practical manufacturing. Close collaboration with Jiangsu University, Chinese Academy of Sciences, and Guangdong University of Technology keeps our capabilities at the leading edge in hydraulic development, specialty coating applications, and intelligent industrial drive technologies. Jiangsu University National Research Center of Pumps provides pump-drive coupling torsional stiffness matching and critical speed avoidance analysis for REXNORD coupling applications across multiple pump types; Chinese Academy of Sciences contributes advanced metallurgical process research for through-hardened gear coupling alloy steels and corrosion-resistant hub materials; Guangdong University of Technology supports precision spline cutting and spline gauge verification for close-tolerance coupling drive connections.
Provide your pump model and coupling specifications — our team will assess compatibility and come back with a detailed technical proposal.
OUR BRANDS & SERVICES
Our brand delivers complete technical solutions within the fluid machinery and engineering sectors. Through our range of specialized technologies and product brands, we equip our clients with high-level technical advisory, commercial support, and integrated product solutions — covering pumps, frequency converters, servo drives, PLC-HMI, industrial control cabinets, motors, mechanical seals and assemblies, couplings, gearboxes, and turnkey engineering services (overseas on-site 3D scanning reverse molding of pump replacement parts and equipment debugging by our engineers deployed overseas).
Material Selection Guide for Coupling Hubs
|
Material |
Tensile Strength (MPa) |
Hardness (HB) |
Corrosion Resistance |
Recommended Coupling Service |
|---|---|---|---|---|
|
Forged steel 1045 |
585 |
170–210 |
Low |
Standard industrial, water, wastewater, oil |
|
Alloy steel 4140 |
830 (Q&T) |
225–310 |
Low (can be plated) |
High-torque, heavy-duty, mining, marine |
|
SS 304 |
515 |
140–180 |
Good |
Food processing, water treatment, mild chemical |
|
SS 316 |
485 |
145–195 |
Excellent |
Chemical, pharmaceutical, marine, corrosive env. |
|
Ductile iron |
415 |
150–220 |
Low |
Cost-sensitive, light to moderate duty, jaw couplings |
Elastomer Flex Element Selection
|
Elastomer Type |
Temperature Range |
Hardness (Shore D) |
Oil Resistance |
Dynamic Load Capability |
|---|---|---|---|---|
|
NBR (Buna-N) |
-30°C to +90°C |
50–65 |
Good |
Light–Moderate shock, general service |
|
Urethane (PU) |
-20°C to +70°C |
55–75 |
Moderate |
Higher stiffness, good for reversing loads |
|
Hytrel (TPE-E) |
-40°C to +120°C |
60–80 |
Good |
High dynamic load, high cycle fatigue resistance |
|
FKM (Viton) |
-15°C to +200°C |
65–85 |
Excellent |
High-temperature, aggressive chemical service |
Coupling Sizing Factors
- Torque = Power × 9550 / Speed — Calculate the nominal torque from pump power (kW) and operating speed (RPM); apply the service factor
- Service Factor — Centrifugal pumps: 1.0–1.5; Gear/screw pumps: 1.5–2.0; PCP/AODD/slurry pumps: 2.0–3.0; Reciprocating pumps: 3.0–4.0
- Bore Capacity — Verify that the coupling selected can accommodate both the motor shaft diameter and the pump shaft diameter within its maximum bore range
- Speed Limit — The coupling's maximum safe operating speed must exceed the pump operating speed; disc and grid couplings have higher speed limits than gear and jaw couplings
- Space Envelope — The coupling selected must fit within the available shaft gap (distance between motor shaft end and pump shaft end) and guard clearance
- Misalignment Tolerance — Select a coupling with misalignment capacity that exceeds the expected alignment capability at installation
Environmental & Service Condition Considerations
- High Ambient Temperature — For pump rooms with temperatures above 70°C, use all-steel couplings (grid or gear) or disc couplings; avoid elastomeric spider couplings unless Hytrel or FKM type is specified
- Corrosive Atmosphere — In coastal, chemical, or marine environments, specify SS 316 hubs and stainless disc packs; apply shaft anti-corrosion coating between hub bore and shaft
- Cyclic & Shock Loads — For pumps with heavy cyclic loading (sludge, slurry, mining) use grid or gear couplings with their higher energy absorption capacity; disc couplings are less tolerant of shock
- Submerged Service — For submersible pump couplings, specify fully sealed gear coupling or stainless disc coupling with barrier coating; standard elastomeric elements degrade underwater
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Room 1904, Building 1, Zhongtang Tianan Digital City, No.89 Jinyuan Road, Zhongtang Town,Dongguan City, Guangdong Province, China.
