F Type Flexible Tyre Coupling – 45# Steel / Cast Iron, Rubber Bushing, Replaces Martin / Fenaflex

Factory direct | 45# steel or cast iron hubs | High-elastic rubber tyre element | High misalignment capacity | Shock absorption | Vibration damping | Maintenance-free | Replaces Martin, Fenner, Fenaflex | OEM/ODM/OBM

The Apexcoupling F Type Flexible Tyre Coupling is a high-performance elastomeric coupling designed for demanding power transmission applications where misalignment, vibration, and shock loads are present. Featuring 45# steel or cast iron hubs with a high-elastic rubber tyre element, this coupling delivers excellent shock absorption, vibration damping, and misalignment compensation. The F Type design (bushing installed from inside the hub) offers high misalignment capacity (up to 4° angular, 6mm parallel, 8mm axial) and maintenance-free operation. Available in sizes from F40 to F250 with taper bush or pilot bore options, this coupling is the ideal replacement for Martin, Fenner, and Fenaflex tyre couplings – offering the same performance at factory-direct pricing. Suitable for pumps, motors, compressors, conveyors, fans, and general industrial machinery.

✅ Replaces Martin, Fenner, Fenaflex – same dimensions, better value. High misalignment capacity – up to 4° angular, 6mm parallel, 8mm axial. Maintenance-free – no lubrication required. F Type – bushing installed from inside the hub.

Key Technical Specifications

🔧 Custom bores, taper bushes, tyre compounds, and hub materials available. Contact us with your specifications.

F Type vs H Type – Understanding the Difference

✅ F Type is the most common configuration for standard industrial applications. Both F and H type hubs can be combined with the same tyre element.

Product Structure

1. Two Hubs – 45# steel or cast iron (GG25), precision-machined, painted or black oxide finish.

2. High-Elastic Rubber Tyre Element – Synthetic rubber with fabric reinforcement, available in standard or FRAS (Fire Resistant Anti-Static) compounds.

3. Taper Bush or Pilot Bore – For secure shaft mounting.

💡 How it works: The F Type tyre coupling consists of two hubs connected by a high-elastic rubber tyre element. Torque is transmitted through the tyre via shear and compression, while the tyre’s elasticity absorbs shock, dampens vibration, and compensates for angular, parallel, and axial misalignment. The press fit of the elastomer into the hubs eliminates backlash. The tyre can be easily replaced without moving the connected shafts – reducing maintenance downtime.

Tyre Compound Options

✅ FRAS (Fire Resistant Anti-Static) tyres are recommended for applications where fire safety and static electricity dissipation are critical – such as mining, chemical plants, and food processing.

Product Features & Advantages

Applications

• Pumps – Centrifugal, gear, and diaphragm pumps

• Motors – Electric motor drives

• Compressors – Air and gas compressors

• Conveyors – Material handling systems

• Fans & Blowers – Ventilation systems

• Food & Beverage Processing – With FRAS tyre option

• Mining Equipment – Crushers, conveyors – FRAS option recommended

• Chemical Industry – Pumps, mixers – FRAS option recommended

• Printing Machinery – Smooth, vibration-free operation

• General Industrial Machinery – Wide range of power transmission applications

Why Choose Apex Coupling for F Type Tyre Couplings?

FAQ

Q: What is an F Type tyre coupling?
A: An F Type tyre coupling is a flexible coupling consisting of two hubs (F Type – bushing installed from inside the hub) and a high-elastic rubber tyre element. It transmits torque while accommodating misalignment, absorbing shock, and dampening vibration.

Q: What is the difference between F Type and H Type?
A: F Type means the bushing is installed from the inside of the hub. H Type means the bushing is installed from the outside of the hub. Both types use the same tyre element.

Q: What materials are used for the hubs?
A: Hubs are available in 45# steel or cast iron (GG25).

Q: What is the misalignment capacity?
A: The tyre coupling accommodates up to 4° angular, 6mm parallel, and 8mm axial misalignment.

Q: Does the coupling have backlash?
A: No. The press fit of the elastomer into the hubs eliminates backlash.

Q: Does the coupling require lubrication?
A: No. The tyre coupling is maintenance-free – no lubrication required.

Q: What is the operating temperature range?
A: Standard rubber tyres operate from -20°C to +80°C.

Q: What is FRAS?
A: FRAS stands for Fire Resistant Anti-Static. FRAS tyres are fire-resistant and dissipate static electricity – recommended for mining, chemical, and hazardous environments.

Q: Is this coupling a replacement for Martin or Fenaflex?
A: Yes. Our F Type tyre coupling is a direct replacement for Martin, Fenner, and Fenaflex tyre couplings.

Q: What sizes are available?
A: Sizes range from F40 to F250.

Q: Can I get a custom coupling?
A: Yes. We offer OEM, ODM, and OBM support – custom bores, taper bushes, tyre compounds, and hub materials.

Request a Quote

Send us your required size (e.g., F80, F100, F140), bore size, hub material, and application details. Our engineers will recommend the optimal model and provide a quotation within 24 hours.