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FAQs

ansewr 1

ansewr 2

Two numbers: the section, width by height, read from the keyway or the old key, and the length of the keyway it fills, both stated on every listing.

Measure the keyway: width across, depth down, or measure the old key directly, since section follows shaft diameter by standard and the keyway was machined to it.

Because slack hammers: a loose key rocks under drive reversals and beats its keyway oval, and a worn keyway is a machining repair, so the close-fitting key is the cheap insurance.

At the first rock: any movement between hub and shaft under load means the key or keyway is wearing, and a new key fitted early saves the keyway.

Stepped within each section, the largest sections running 125 to 400 millimetres, with trade packs serving the stores that fit keys constantly.

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Parallel Keys

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A parallel key is the drive between a shaft and its hub: the rectangular steel section sits half in the shaft's keyway and half in the hub's, and every pulley, gear, coupling, sprocket and impeller that turns with its shaft turns only because of the key seated between them. The 393 keys on this shelf are all picked on just two numbers, the section and the length.

The section is set by the shaft itself: keyway width and depth follow shaft diameter by standard, so the machined keyway names its key's cross-section before anything is measured twice, and the range runs from the small sections of instrument and pump shafts all the way up to 50 by 28 millimetre keys for the heaviest industrial drives. The lengths step within each section, the largest running from 125 through the intermediate steps to a full 400 millimetres, and the trade packs serve the maintenance stores that fit keys by the dozen through a year.

The material is C45 grade in stainless steel forms, the key steel of the standard, machined to fit its keyway closely on every face, because a loose key hammers its keyway oval under drive reversals and a hammered keyway is a machining repair on a stripped shaft, which is exactly why keys are renewed at the very first sign of rock in the hub.

The keyway measured for width, depth and length, or the old key simply measured directly with callipers, finds the replacement at once, and a photographed key with its measurements over WhatsApp on 07754288583 comes back named against the range, with the drive's condition question answered honestly where the keyway itself has already worn.

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Showing 1 to 30 of 393 entries
FAQs

ansewr 1

ansewr 2

Two numbers: the section, width by height, read from the keyway or the old key, and the length of the keyway it fills, both stated on every listing.

Measure the keyway: width across, depth down, or measure the old key directly, since section follows shaft diameter by standard and the keyway was machined to it.

Because slack hammers: a loose key rocks under drive reversals and beats its keyway oval, and a worn keyway is a machining repair, so the close-fitting key is the cheap insurance.

At the first rock: any movement between hub and shaft under load means the key or keyway is wearing, and a new key fitted early saves the keyway.

Stepped within each section, the largest sections running 125 to 400 millimetres, with trade packs serving the stores that fit keys constantly.

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