Eye Spyraflo, a Look at Bearing Applications. Spyraflo Bearings Have ‘The Reel Thing’

A manufacturer produces a unique, portable reel dispenser that offers a simple and convenient solution to what has traditionally been a tedious and unwieldy task of getting an electric power cord to unwind and rewind in tight and restrictive work areas. The new reel incorporates a significant new design feature which is a constant-torque unwind and rewind mechanism. Whether the reel is oriented horizontally or vertically, the operator can use it in complete safety without the cable constantly tugging at the appliance in use. The device is fully automatic and is ideal for trade, light industrial, as well as domestic and DIY applications.

The key challenge facing the company’s designers was how to incorporate the constant-torque, rewind, spring mechanism into a low-cost assembly and one that required smooth running bearings able to accommodate assembly and material variables. A further problem was - the mechanism was to be made of a thin cross section of sheet steel where the side plates had to support the bearings. The bearings still had to be secure and durable and reliably drive the reel.

The designers reviewed a number of options before selecting the Spyraflo 8mm diameter self-clinching, self-aligning, SAE-840 Bronze bearings (FSB-8M). The bearing's ±5º self-alignment was crucial and its capability ensures a smooth pullout and retraction motion throughout the length of the 20 metre cable. The bearing has a 25% oil content ensuring the permanent self-clinching mount guarantees a long, maintenance-free life for this unique device. The manufacturer is now experiencing huge success with this new product and delighted they chose Spyraflo bearings.

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