Drawn Cup Needle Bearings

¡ñthe outer ring of drawn cup needle roller bearing is punched with the steel sheet. It has the small sectional height and thelarge load carrying capacity and is suitable for economic mass production.

¡ñmodel hk, ta, tla, open-end drawn cup needle roller bearings with retainer

¡ñmodel bk close-end drawn cup needle roller bearing with retainer

¡ñmodel sce, ba, j, jh, drawn cup needle roller bearings (inch series).

¡ñthe drawn cup needle roller clutch is the overriding clutch (one-way clutch), composed of the outer ring punched with the high-quality steel sheet, plastic retainer, spring and needles, used for transferring one-way torque.

¡ñthe drawn cup needle roller clutch has not the load carrying feature by itself. However it can play the action in combination with model hk and bk drawn cup needle roller bearing.

¡ñthe drawn cup needle roller clutch is the block bearing either withstanding the radial load or transferring torque.

If thrust needle bearings are composed of a set of tray ring gaskets combined with retainer with roll bearings ( needles). The stand leads and holds many rolling elements, thicker ring gaskets of ls, gs, ws, zs series

If produce the following combined radial/thrust bearings include: Nokia, NKIB, NX, NKX, NKXR, RAX700, RAXF700, RAX400, RAX500, RAXPZ400, RAXZ500

Needle and retainer assembly, needle bearing and drawn cup needle roller bearings are all moving tip bearings. They can be used as positioning bearing with combined with stop thrust rings or under small load at low speed and being fully lubricated. Other positioning bearing always have the problem of much space occupied.

Combined if needle bearings are single directional positioning bearings or the positioning bearings with minimum radically sectional height. If the centripetal needle bearings are used with thrust ball bearings or cylindrical roller bearings in combination, the applicable range will be greatly expanded. The combined needle bearings are mainly used in transmission engineering and tooling machines such as the bearing in the main shaft of a drill press, drill sleeve , positioning central shaft, worm, spanner teeth head and so on and so forth.



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Needle roller and cage thrust assemblies are complements of small diameter needle rollers arranged in a spoke-like configuration. Needle rollers are equally spaced by means of a cage whose web section separates the rollers and provides guidance to keep them tracking in an orbital path. The purpose of these assemblies is to transmit thrust loads between two relatively rotating objects while greatly reducing friction.

Needle roller and cage thrust assemblies also can be unitized with lipped washers which serve as raceway surfaces for the needle rollers. Washers can be supplied separately or can be mechanically unitized to the needle roller thrust assemblies for easy handling.

Size range: 6 mm to 140mm (0.2362 in. to 5.5118 in.)

Design Attributes
Dimensions for bore and O.D. of thrust assemblies and washers are nominal.
Thrust washers burnished at least one quarter of bore area (remainder is rough breakaway finish).
O.D. finish of washers will be as blanked.
Thinner washers may be out of flat due to distortion in hardening in the free state (expected to flatten out under load).

Applications
Automotive automatic and manual transmissions
Automotive accessories (compressors, steering gears, etc.)
Agricultural equipment
Construction equipment


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Cylindrical roller bearings are in linear contact with the raceways. They have a high radial load capacity and are suitable for high speeds.
There are different types designated as nu, nj, nup, n, nf (for single-row bearings), nnu, and nn (for double-row bearings depending on the design or absence of side ribs).
The outer and inner rings of all types are separable.

Some cylindrical roller bearings have no ribs on either the inner or outer ring, so the rings can move axially relative to each other. These can be used as free-end bearings. Cylindrical roller bearings, in which either the inner or outer rings has two ribs and the other ring has one, are capable of taking some axial load in one direction double-row cylindrical roller bearings have high radial rigidity and are used primarily for precision machine tools.

Pressed steel or machined brass cages are generally used, but sometimes molded polyamide cages are also used.
Depending on the existence of ribs on their rings, cylindrical roller bearings are classified into the following types:
Types nu, n, nnu, and nn are suitable as free-end bearings. Types nj and nf can sustain limited axial loads in one direction. Types nh and nup can be used as fixed-end bearings.

Nh-type cylindrical roller bearings consist of the nj-type cylindrical roller bearings and hj-type l-shaped thrust collars.
The inner ring loose rib of an nup-type cylindrical roller bearing should be mounted so that the marked side is on the outside.


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Inner ring is processed through heat treatment and precision machining, tolerance of dimension and geometric accuracy accords to the national standard. There is guiding chamfering at the two ends of the bearing race of the inner ring, which is convenient for installation. They are used for situation when the axis can not be processed with heat treatment and can not be treated as bearing race. When the needle rollers with inner ring and without ring are used together, normal working windage can be reached.
Inner ring tolerance of lr is more than ir, terminal facet is not grinded, the price is low and they are usually used together with needle roller bearing with pressed outer ring.


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