ENGEERING INFORMATION

RINGS&BALLS-XLD uses home made or imported vacuum degrassed.high carbon,chromium bearing steel as it is standard material for precision bearing rings and balls.

RETAINERS-XLD standard bearing retainers are made from quality cold rolled carbon steel. Nylon or brasses are available upon request.

SEALSS&SHIELDS-XLD shields also employ quality carbon steel as standard. LD uses a variety of high temperature operation and compatibility with grease.Buna-Nitrile is the

standard material used.

LUBRICATNTS-XLD are chevron and Alvania#2 used in our factory.

2. Tolerance

Bearing tolerance includes dimensional tolerance and revolving tolerance. dimensional tolerance is a request when bearings are mounted on shafts or in housings. it includes bore /outer side diameter deviation from basic.innerring /outer ring width deviation from basic and radius allowance. Geometric tolerance includes bore/outside diameter deviation in single planne,innerring /outerring width deviation in single radial plane. revolving tolerance includes radial and axial run out of assembled bearing innerring and outerring,innerring referring reference face run out with bore and outside cylindrical surface run out with outerring reference face.

Tolerance class ranges from common class 0to 6 5 4 and 2, from low to high,tolerance class as below text.

3 Clearance

Bearing clearance means the value of displacement of the unfixed ring when it moves against the fixed ring in radial or axial direction before the bearing in mounted on a shaft or in a housing, according to movement direction it falls into radial clearance and axial clearance.

The standard clearance for XLD deep groove ball bearings are dividing into four groups,C2 C0 C3 C4 as show below.

4.Vibration

Bearing vibration means bearing components elastic information that varies with time and all other movement that deviates from a theoretic position except that necessary to bearing functions, it has two modes-acceleration(db0and velocity (UM/s),vibrarion acceleration level rangesfrom low to high.similary,vibration velocity is examined as per V V1 V2&V3grade V is fundamental V1 V2 V3 successively indicate the vibration level from low to high..generally,Velocity examination is better than acceleration examination in that it can more reflect bearings manufacturing level and bearings inherent quality.

While our company keeps control of vibration velocity values, we also carry out vigorous control on abnormal noise from running bearings in test according to requirements of electric motor quality bearings

1. Bearing housing

The internal structure of the insert ball bearing is the same with that of deep groove ball bearing. But the inner race of this bearing is wider than the outer race. The outer race has the spherical surface. Insert ball bearings can self aligning with the fit between the outer race and the bearing block. Insert ball bearings are compact. It’s easy for loading and unloading. Spherical insert ball bearings often used in mining, metallurgy, textile, transportation machinery, etc.

the feature and advantage of SONKING (“XLD” brand) pillow block bearing.

Automatic self-aligning

Large load capacity

Long lifetime

Good sealing

Strong housing

Bearing can easy install housing

The inner race proceed special heat-treatment

Unique design prevent the outer race rotate

Easy for installing and using

The type of pillow block bearing we have.

Our company can offer full a range of pillow block bearings, including UCP UCF UCFL UCT UCFC UCPA UCPH 200 or 300 series to satisfied customer different requirement.

2,our manufacturer.

Our factory builds up according to bearing standard workshop, which has complete production line to make the finishing bearing.

3. Quality control

4. XLD brand & OCPU brand packing and trade information