TIMKEN bearing set the matters of attention in the upstream gap detection

Determination of TIMKEN bearing outer ring price in roller sagging state of clearance. First of all ensure the TIMKEN bearing outer ring 1/2 - honest attitude to turn right or left 1, 2 column roller column of any roller was positively at the bottom of the location, respectively. Determination of using feeler clearance, somewhat different parts according to the bearing outer ring outside diameter size. Outer ring of bearing clearance measurement of the diameter greater than 200 mm. Insert the pin into the bearing is between the above 2 column roller and outer ring and the relative position of bearing center symmetric 2 columns between roller and inner circle, the determination of the bearing internal clearance. TIMKEN bearing internal clearance is r, the bearings are the following two columns between rollers and the outer ring of bearing internal clearance respectively set to rS1 ` rS2, internal clearance on bearing is set to rS. rS=1/2( rS1+rS2) The relative position of bearing center symmetric 2 columns between rollers and the outer ring of bearing internal clearance and 2 column on the left side of determination of clearance between roller and outer ring, respectively, set to rL1 ` rL2, set on the left side of the bearing internal clearance to rL. rL=1/2( rL1+rL2) Between the two columns on the right side of the roller and outer determination of the clearance is set respectively for R1 ` rR2, on the right side of the bearing internal clearance is set for the rR. When inspection on timken bearing, we must, in accordance with the relevant provisions of the following we will introduce the specific matters. A, the rules of the measurement area for TIMKEN bearing inner diameter or outer diameter measurement, domestic regulations leave the ring on the southern side of one of the biggest chamfering coordinates within the area of measurement, and foreign many regulations to leave the ring twice in two end chamfering coordinates within the area of measurement. Second, the provisions of the measuring instrument used in the measurement instrument must be calibrated, and have to adapt themselves to the test bearing precision and magnification ratio. Three, the measuring head radius and pressure gauge in order to reduce the measurement error, must be within the scope of the possible, makes every effort to reduce inventory pressure measuring force, and increasing the probe radius of curvature. Four, the provisions of the benchmark in the comparative measurement method for measurement of bearing size tolerance, dosage of rules or standard for comparison measuring the size of the benchmark, the gauge block must conform to the standard JB/T1078 'gage block' regulation, standard parts must comply with the provisions of the competent department of factory. Five, the provisions of the measuring datum for general TIMKEN bearing, take ring not print face to measurement datum, for angular contact ball bearings and tapered roller bearings, take take datum of thrust load end.