Flexible Flanged Shaft Coupling
Flexible flanged shaft couplings are designed to transmit torque between two rotating shafts while accommodating limited misalignment and reducing the transmission of shock and vibration.
These couplings are commonly used in marine propulsion systems, pumps, compressors, generators and industrial machinery where reliable power transmission and equipment protection are required.
Key Features
- Reliable transmission of rotational torque
- Accommodates limited angular, parallel and axial misalignment
- Helps absorb shock loads and torsional vibration
- Reduces stress on shafts, bearings and connected equipment
- Compensates for minor installation inaccuracies
- Durable construction for demanding operating conditions
- Replaceable flexible elements available for selected models
- Standard and customised configurations available
Typical Applications
- Marine propulsion shafting
- Main and auxiliary engines
- Generator sets
- Pumps and pumping systems
- Air compressors
- Gearboxes and reduction gears
- Electric motors
- Fans and blowers
- Hydraulic power units
- Conveyors and industrial machinery
Available Types
| Coupling Type | Typical Application |
|---|---|
| Rubber-Element Flange Coupling | Vibration and shock absorption |
| Tyre Coupling | High flexibility and easy element replacement |
| Pin-and-Bush Coupling | General industrial torque transmission |
| Disc Coupling | High-speed and precision machinery |
| Gear Coupling | High-torque heavy machinery |
| Grid Coupling | Shock-loaded and reversing applications |
| Torsionally Flexible Coupling | Engines, generators and marine drive systems |
| Spacer Coupling | Equipment requiring maintenance clearance |
Typical Construction
A flexible flanged shaft coupling may comprise:
- Driving and driven flanges
- Flexible rubber or elastomeric element
- Steel hubs
- High-tensile mounting bolts
- Retaining plates or rings
- Spacers or adaptors, where required
- Protective coupling guard, where applicable
Available Options
| Property | Available Options |
|---|---|
| Coupling Design | Flanged, tyre, pin-and-bush, disc, grid or gear type |
| Flexible Element | Natural rubber, NBR, neoprene, polyurethane or engineered elastomer |
| Flange Material | Carbon steel, cast iron, stainless steel or forged steel |
| Bore | Pilot bore, finished bore, keyed or splined |
| Mounting | Flanged, hub-mounted or shaft-mounted |
| Torque Rating | Selected according to transmitted power and operating conditions |
| Speed Rating | Subject to coupling size and manufacturer |
| Spacer | Standard or customised length |
| Balancing | Static or dynamic balancing, where required |
| Certification | Material or class certification subject to requirement |
Product Benefits
- Reduces vibration transmitted between connected equipment
- Protects machinery against shock and transient loads
- Helps extend the life of shafts, bearings and seals
- Allows limited movement between driving and driven machinery
- Simplifies maintenance when replaceable elements are used
- Suitable for new installations, retrofit and replacement projects
Selection Information Required
Please provide:
- Existing coupling maker, model and serial number
- Application and driven equipment
- Motor or engine power
- Operating and maximum speed
- Nominal and peak torque
- Shaft diameters and keyway dimensions
- Flange outside diameter and bolt-hole arrangement
- Distance between shaft ends
- Expected angular, parallel and axial misalignment
- Operating temperature and environmental conditions
- Required material or classification certification
- Photographs, drawings or an existing sample
