|
Home
>
Products
>
REXNORD OMEGA Coupling
>
REXNORD Flexible CNC Machining Stainless Steel Pump Coupling Hub
Product Details
Model NO.:
Rexnord Coupling Hub
Torque:
62-6500
Bore Diameter:
10-165
Speed:
1000-5400
Structure:
Flexible
Material:
Stainless Steel
Type:
Coupling Hub
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
Transport Package:
Carton And Wooden Cases
Specification:
According To The Drawings
Origin:
China
HS Code:
84139100
Production Capacity:
10, 000 Tons Per Year
Highlight:
Flexible CNC machining coupling hub
,Stainless steel Rexnord coupling
,CNC machined coupling with warranty
Payment & Shipping Terms
Minimum Order Quantity
1
Price
35
Product Description
REXNORD Coupling Hub – Pump Shaft Drive Hub for Power Transmission Couplings
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 hub-to-shaft shrink fit stress analysis and fatigue life evaluation for REXNORD coupling hub applications in centrifugal and positive displacement pump drives; Chinese Academy of Sciences contributes advanced heat treatment process optimization for hub alloy steel case hardening and core toughness balance; Guangdong University of Technology supports automated hub bore CMM verification and keyway broaching quality control for precision hub manufacturing.
Provide your pump model and hub bore/keyway 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).
Product Overview
REXNORD Coupling Hub is the shaft-mounting component of a flexible or rigid shaft coupling that transmits torque between a pump shaft and the coupling's flex element, disc pack, or gear sleeve. The hub is the interface between the rotating machine shaft and the coupling assembly — one hub mounts on the pump shaft, the other on the motor or drive shaft, and they are joined by the coupling's flex element or gear engagement.
The coupling hub is a precision-machined component characterized by its bore diameter and keyway (for keyed shaft connections), or its tapered bore and split bushing (for quick-mount applications). The hub also features the engagement surface for the specific coupling type: grid hub slots for grid spring engagement, jaw coupling hub legs for spider element capture, disc pack bolt holes for diaphragm-style connections, or gear hub teeth for gear coupling engagement with a mating sleeve.
REXNORD coupling hubs are manufactured from forged steel, cast steel, or ductile iron, with hubs for corrosive service available in stainless steel. The hub bore is machined to H7 tolerance, the keyway to P9, and each hub is mill-balanced as a minimum standard, with dynamic balancing available for high-speed applications.
Our REXNORD replacement coupling hubs are manufactured to the original REXNORD hub dimensions, engagement profiles, and bore configurations. Hubs can be supplied with custom bore and keyway dimensions to match existing shaft sizes, eliminating on-site machining at installation.
Technical Specification
|
Category |
Details |
|---|---|
|
Product |
Coupling Hub (Shaft Hub, Coupling Half) – REXNORD brand specification |
|
Application |
Grid, jaw, disc, gear couplings for pump, motor, and drive shafts |
|
Hub Type (by coupling) |
Grid hub (slot type), Jaw hub (spider leg type), Disc hub (bolt flange type), Gear hub (tooth type) |
|
Bore Type |
Straight bore + keyway, Tapered bore + split bushing, Splined bore |
|
Bore Tolerance |
H7 standard; custom tolerances available |
|
Bore Range |
10 mm to 250 mm standard; larger sizes through custom order |
|
Keyway Standard |
DIN 6885 metric, ANSI B17.1 inch; P9 tolerance |
|
Material |
Forged steel 1045 (standard), Alloy steel 4140, SS 304, SS 316, Ductile iron |
|
Surface Hardening |
Induction hardening on gear teeth (gear hub); through-hardened (alloy steel hubs) |
|
Balance Grade |
Mill-balanced (standard), G6.3, G2.5 dynamic balance |
|
Standards |
ISO 1940 (balance), AGMA 9000, API 610 (option) |
|
Inspection |
Bore CMM, Keyway gauge, Flange face runout, Hardness, Material cert, MPI (option) |
|
Certificate |
ISO9001:2015, ISO14001:2004 |
|
Delivery |
10–20 days after deposit; custom boring and keyway available |
|
Payment |
70% TT in advance, balance against copy of B/L |
REXNORD Hub Types by Coupling Series
|
Hub Type |
Coupling Series |
Engagement Feature |
Typical Service |
|---|---|---|---|
|
Grid hub |
Grid coupling (elastomeric) |
Radial slots around hub OD for spring grid |
General pump, slurry, high-torque, shock load |
|
Jaw hub |
Jaw coupling (elastomeric spider) |
Axial legs on hub face interlock with spider |
Light-duty, close-coupled, small centrifugal |
|
Disc hub |
Disc coupling (metallic flex) |
Bolt holes on flange for disc pack |
High-speed, precision, API, turbine-driven |
|
Gear hub |
Gear coupling (tooth engagement) |
Crowned gear teeth on OD engage mating sleeve |
Heavy-duty, large centrifugal, steel mill |
Why Choose Our REXNORD Coupling Hubs
- H7 Bore Accuracy — Bore diameter machined to H7 tolerance with CMM verification, ensuring consistent shaft-to-hub fit without fretting
- P9 Keyway Precision — Keyway width, depth, and side wall parallelism verified with keyway gauges to P9 tolerance
- Custom Bore & Keyway — Hubs can be supplied bored and keyed to your specific shaft dimensions, ready for direct installation
- Material Selectable — Forged steel standard; upgrade to alloy steel 4140, SS 304, or SS 316 for corrosive or high-strength needs
- Hub Interchangeability — Hub engagement geometry matches REXNORD original dimensions for direct replacement with existing flex elements
Recommended Products
Contact Us at Any Time
Room 1904, Building 1, Zhongtang Tianan Digital City, No.89 Jinyuan Road, Zhongtang Town,Dongguan City, Guangdong Province, China.
