Tyre Couplings F140 - Industrial Tyre Couplings

Size	TYPE F & H								TYPE B								A	C	‡ G	† M	No. of screws per flange
Size	Bush No.	Max Bore	L	D	E	F	ξ J	Approx Weight Kg *	Max Bore	Min Bore	L	D	E	F	Set Screw on key	Approx Weight Kg *	A	C	‡ G	† M	No. of screws per flange
F140	3535	90	204	194.5	89	76.0	89	67.2	120	75.00	204	195	89	76.0	M20	61.0	359.0	313	14	26	8

The F140 Tyre Coupling is a high-torque flexible coupling designed for heavy industrial power transmission. As one of the largest sizes in the standard tyre coupling range, the F140 is engineered to transmit massive power loads while retaining the flexibility needed to absorb severe shock loads and accommodate significant shaft misalignment.

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Key Specifications

The F140 is built for extreme performance. Below are the standard technical specifications:

Parameter	Value
Model Size	F140
Nominal Torque	2,325 Nm
Max. Torque (Peak)	5,813 Nm
Max. Rotational Speed	1,500 RPM
Power Rating (at 1440 RPM)	~350 kW (approx)
Taper Lock Bush Size	3525
Max. Bore Size	90 mm (with 3525 Bush) / 125 mm (Max with B Flange)
Misalignment Capability	4° Angular \| 3.7mm Parallel \| 4.6mm End Float

How It Works

The F140 utilizes a massive, reinforced rubber tyre element to transmit torque between two heavy metal flanges.

Torque Transmission: The driving flange rotates the flexible tyre, which transfers the immense rotational force to the driven flange. This elastic connection dampens mechanical noise and eliminates metal-to-metal contact.
Shock Load Damping: In high-impact applications like jaw crushers, the F140 tyre twists to absorb kinetic energy from sudden load spikes, acting as a buffer that prevents shaft breakage and gearbox failure.
Misalignment Tolerance: The F140 is capable of handling large shaft errors—accommodating up to 3.7mm of parallel offset—which is critical for large machinery that may experience thermal expansion or foundation shifting.

Benefits of F140 Couplings

Massive Power Capacity: Capable of transmitting ~350 kW at standard speeds, making it suitable for the largest industrial drives.
"Replace-in-Place": The split-tyre element allows for replacement without moving the heavy motor or driven machine, a critical feature for reducing downtime on large equipment.
Lubrication Free: Requires no grease or oil, ensuring low-maintenance operation and eliminating contamination risks.
Vibration Isolation: The elastomeric element effectively isolates torsional vibration, protecting sensitive downstream components from fatigue.
Safety: In the event of a catastrophic jam, the tyre will tear sacrificially, disconnecting the drive and saving the expensive capital equipment from destruction.

Typical Applications

The F140 is the standard choice for heavy industry where reliability is non-negotiable:

Mining & Quarrying: Primary crushers, large SAG mills, and heavy-duty screens.
Bulk Material Handling: Main drive conveyors for overland transport systems.
Fluid Power: Large slurry pumps and industrial fans.
Metal Processing: Steel rolling mill drives and heavy coilers.
Marine: Main propulsion drives and dredge pumps.

Summary

The F140 Tyre Coupling is the ultimate solution for heavy-duty power transmission. With a nominal torque rating of 2,325 Nm and the ability to absorb significant shock loads, it provides unmatched protection for high-value industrial assets. Whether driving a massive mill or a critical conveyor, the F140 offers the strength, flexibility, and ease of maintenance required to keep heavy industry running.