WELCOME TO Hongkong NKF Machinery Co.,Limited. English | Spanish

Manufacturer & designer of wire display racks, store fixtures & hardware. Easels, banners, bulletin sign holders, sign hangers, wind resistant, lawn & changeable message signs, stakes, light boxes, markers, channels, letters & numbers are also available. Types of racks include floor, counter, spinner, CD/DVDs, literature, cap, hat, dump bin, greeting card, postcard & clip strip racks. Hardware include flanged tubes, washers, [turntable bearings] thrust retainers, clamps, welding clips, split tubes, welding tabs, flat steel discs, wrenches, inserts, card holders & plastic bases. Racks are suitable for promotional, retail & supermarket applications.

Distributor of a wide variety of bearings & bearing components. Bearings are available for power transmission, material handling, motor, HVACR, hardware, pumps, hand tools, power tools, pneumatics & as raw materials. Products include radial ball bearings, mounted ball bearings, flange ball bearings, ball bushing bearings, washdown bearings, rubber mounted bearings & more. Services include 24-hour emergency order response services, inventory management services, safety services, repair and replacement programs, hazardous recycling services and storage/material handling equipment services. 1 year warranty.

The SRG turntable bearing is consisted of a thrust/radial race, a trust/radial ring, a trust washer, two needle roller and cage asseblies and a set of radial cylinderical rollers. On the race and the ring, there are equally distributed screw holes for mounting.SRG turntable bearing has a high axial and radial capacity, and high declining rigidity and a very high precision.

It is applicable to the machine tool, other high precision machinery of the rotary table, sub-set, and also can be used for chucks , milling heads, measuring instruments , test equipment as well as rotary turntable.We have almost all the numbers in stock. 

Our turntable skf bearing has always been unique because its point of contact does not move laterally. This is because it is held captive in a specially shaped sapphire jewel. Due to its inverted design we only use a single bush to prevent rocking, rather than the usual two or full sleeve. Both these features reduce bearing noise and in essence this remains unchanged.

The lower bush is manufactured from sintered bronze, a porous structure that is impregnated with special oil during manufacture. The same material is found in other appliances, from electric motors to high-speed drills. Its best to think of this material as a metal sponge, riddled throughout with fine capillaries, which during manufacture are filled with special oil. 

As the bearing material rotates, the oil is released to the surface producing a film of lubrication between the fixed shaft and the bush. As the bush glides over the shaft, localised oil pressure is built up in front of the revolving surface and effectively it begins to aqua-plane, like a car does in heavy rain. This effect separates the moving parts, massively reducing noise compared with non-lubricated bearings, which are in full contact with rubbing surfaces.

As the ntn bearing bush lifts away from the spindle there needs to be a gap, or 'running clearance' for it to rotate. Too tight and it will be forced to the other side of the bush and start rubbing, too loose and the bearing and platter will rock.  

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