Determine bearing monomer clearance, will stand on the stage for bearing which, by hand pressure live bearing outer ring, keep inside and outside circle not tilt, turn right or left inner circle-1 1/2 turn to roller stability. Then, the left and right of any listed a roller are set is superior. With a feeler internal clearance, the measured positions and observation points distributed according to bearing outside diameter size is slightly different.

Outer diameter of more than 200 mm bearing clearance determination

Insert the feeler is just 2 bearing listed with the roller bearing and relative FAG between circles about the center of symmetry position 2 column roller and inner circle of between position, determine the bearing internal clearance.

Internal bearing clearance (R) is, in the bearing are listed above 2 and between the determination between roller bearing internal clearance set respectively (r1) ` (r2), in the bearing is above the internal clearance set to (RT).

RT = 1/2 (r1 + r2)

The relative INA bearing center left and right sides is symmetrical position 2 column roller and between the bearing outer ring was internal clearance and on the left side of the 2 column and outer side roller set between the clearance, set up for rL1 ` rL2, on the left side of the internal bearing clearance set RL.

RL = 1/2 (rL1 + rL2)

On the right side of the 2 column in the outer side roller and between the clearance shall respectively set to rR1 ` rR2 on the right side of the internal bearing clearance set rR.

RR = 1/2 (rR1 + rR2) use type for the internal bearing clearance r = 1/2 (RT + RL + rR)

2. SKF installed in shaft bearings or tight set to cover on the clearance determination

Determination of the outer ring price roller bearing in a state of drooping clearance. Ensure the integrity of the first bearing attitude to turn right or left outside 1/2-1 lap, 2 column roller list of any a roller positively the position of the below respectively. Use feeler determination clearance, bearing outer diameter measurement site according to some different size.

Outer diameter of more than 200 mm bearing clearance determination

Insert the feeler KOYO bearing is the above 2 column roller and outer ring and relative between bearing center left and right sides is symmetrical position 2 column and inner circle between roller, determine the bearing internal clearance. Internal bearing clearance r, put the bearing is the following 2 column roller and determination of bearing outer ring between internal clearance set to rS1 respectively ` rS2, in the interior of the above is bearing clearance set to rS. RS = 1/2 (rS1 + rS2)

The relative bearing center left and right sides is symmetrical position 2 column roller and between the bearing outer ring was internal clearance and on the left side of the 2 column with outside the determination between roller clearance, respectively for rL1 ` rL2 set, put on the left of the internal bearing clearance set to rL.

RL = 1/2 (rL1 + rL2)

Put on the right side of the 2 column roller and determination of the clearance between outer were set to ` R1 rR2, on the right side of the internal bearing clearance set to rR.

RR = 1/2 (R1 + R2)

Use the type o NTN bearing internal clearance.

R = 1/2 (rS + rL + rR)

Determination note
In NACHI bearing internal clearance and bearing the determination of size, etc, measuring instruments and the temperature of the tested components shall be consistent. Especially with heating oil ` induction heater heating installation bearing, determine its internal clearance from the state of the heating must be the cool completely. For example, bearing the warehouse to determine from handling place, bearing temperature may have higher, if not to confirm the temperature of the bearing the clearance, the determination of size, its determination results may be wrong. Between 400 mm diameter determination of above large bearing clearance, or size, can take in the bearing unpacked will be placed on a platform of day and night, so that the temperature of the determination and environmental temperature consistent way.



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