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About Taper-Lock Bush
Using NMTG Taper-Lock Bushes, it is possible for unskilled labour to achieve 'shrink fit' of Pulleys, Couplings, Weld-on hubs etc. on to shafts only using a hexagon wrench. It changed from the traditional design and now features easy-on, easy-off construction and high standardization. The Taper Lock bush, also referred to as a Taper bush or Taper Fit bush, is a locking mechanism commonly used in Power Transmission Drives for locating pulleys, sprockets, and couplings to shafts.
The arrangement of half-threaded holes and longitudinally split tapered bushes ensure maximum grip and fast, easy fitting. The outside of the bush is tapered to match the component bore that is to be located on the shaft. Tightening of the screws into the threaded holes in the hub forces the bush into the taper bored components, thereby effectively contracting the bore of the Taper-Lock Bush until the equivalent of a shrink fit is obtained.
The Taper lock bush is manufactured from precision Cast Iron, Steel & Stainless Steel and is machined to a high quality finish. We can offer other materials according to the customer requirements. We can also do surface coating according to the customer requirement. Taper bushes are available in both imperial and metric shaft sizes.
Example: (1) NTB 2517 – PB (Pilot Bore) (2) NTB 2517 – 40 mm
NTB 2517: BUSHING SIZE
The Taper-Lock bushing size is defined by 4 digits representing two numbers. The first two digits represent the maximum bore size (in inches) and the second two digits represent the bushing length (in inches). For example, product number 2517 has a Approx. max. Bore of 2.5" and a total approx. length of 1.7".