Product Description

China top quality 90x135x35mm thrust ball bearing 51218

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Introduction:

ZYSL thrust ball bearings are produced as single direction or double direction thrust ball bearings. They are designed to accommodate axial loads only and must not be subjected to any radial load.
ZYSL thrust ball bearings are separable, i.e. the shaft washer, housing washer(s), ball and cage assembly(s) can be mounted separately. Shaft washers have a ground bore to enable an interference fit. The bore of the housing washer is turned and always larger than the shaft washer bore.

Single direction thrust ball bearings

Single direction thrust ball bearing

ZYSL single direction thrust ball bearings consist of a shaft washer, a housing washer and a ball and cage assembly (fig 1). As their name implies, single direction thrust ball bearings can accommodate axial loads and locate a shaft axially, in one direction only.

Dimensions

The boundary dimensions of ZYSL thrust ball bearings with flat or sphered housing washers conform to DIN 711:1988 and DIN 715:1987. The dimensions of the bearings with flat housing washers conform to ISO 104:2002.

The values given for the height H1 for bearings with sphered housing washer(s) are valid only for ZYSL bearings with ZYSL washers.

Tolerances

ZYSL thrust ball bearings are made to Normal tolerances as standard. Some single direction bearings with flat housing washer are also available with increased accuracy to tolerance class P6 or tolerance class P5 specifications. Contact ZYSL for availability before ordering.

Normal, P6 and P5 tolerances are in accordance with ISO 199:1997.

Misalignment

Thrust ball bearings with flat housing washers cannot accommodate any misalignment between the shaft and housing or angular misalignment between the support surfaces in the housing and on the shaft.

The bearings with sphered housing washers are generally used with sphered seat washers and can compensate for initial misalignment between the support surfaces in the housing and on the shaft

Feature of Thrust roller bearings

1. Single direction, deep-groove thrust ball bearing for applications that support heavy axial loads

in one direction

2. Open bearing for lubrication applied in place

3. Through-hardened chromium steel for durability and resistance to deformity under heavy loads

4. Pressed sheet steel retainer evenly spaces rollers for reduced friction, vibration, and noise

5. Grooved raceways for higher speeds and thrust-bearing capacity than flat washers

Application of thrust roller bearing

• thrust roller bearing Spherical roller thrust bearing’s load form a certain angle with the bearing

axis line, transfer from one raceway to another raceway. Spherical roller thrust bearings have

specially designed raceways and accommodate a large number of asymmetrical rollers. thrust roller

bearing, The rollers have an optimum conformity with the washer raceways to optimize load distribution

along the roller length. Therefore, they can accommodate relatively high speeds, heavy axial loads in

one direction and heavy radial loads. The load is transmitted between the raceways at an angle to the

bearing axis. Spherical roller thrust bearings are self-aligning and insensitive to static misalignment

of the shaft relative to the housing thrust roller bearing.

Related models and specifications

model	d	D	T
	mm	mm	mm
51200	10	26	11
51201	12	28	11
51202	15	32	12
51203	17	35	12
51204	20	40	14
51205	25	47	15
51206	30	52	16
51207	35	62	18
51208	40	68	19
51209	45	73	20
51210	50	78	22
51211	55	90	25
51212	60	95	26
51213	65	100	27
51214	70	105	27
51215	75	110	27
51216	80	115	28
51217	85	125	31
51218	90	135	35
51220	100	150	38

Descriptions

Single direction thrust ball bearings have two washers, with grooved raceways.

The curvature of the raceways is slightly larger

than that of the ball. Out of two washers, one is shaft washer & the other one

is housing washer.

The bore of the shaft washer isof the shaft dia & the bore of the housing washer

is slightly larger than that of shaft washer, to facilitate free rotation. These types

of thrust bearings are mainly used where axial load conditions are too large to be

accepted by radial bearings. They canaccept purely thrust load in single direction

& they are not suitable for speed applications.

Single direction thrust ball bearings: consist of two washers with raceways and balls guided b a

cage. Washers have flat seating surfaces, and that is why they must be supported so that all balls

can be evenly loaded. Bearings carry the axial load only in one direction. They are not able to carry

radial forces.

Double direction thrust ball bearings: have two cages with balls between the central shaft washer

and two houding washers with flat seating surfaces. The shaft washer has raceways on both sides

and is fixed on the journal. Bearings are able to carry only axial forces in both directions.

These bearing are widely used in automobile, electrical. (Home appliances, electric tools, fitness

equipment, motors, medical devices, motorbikes, textile machines)

Brand Name	ZYSL
Place of Origin	Shandong, China
Model Number	51218
Number of Row	Single Row
Seals Type	Sealed
Precision Rating	P0 P6 P5 P4 P2
Outside Diameter	130,
Bore Size	90,

China top quality 90x135x35mm thrust ball bearing 51218

Product Features

Single direction thrust ball bearings

Dimensions

Tolerances

Misalignment

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