CN201973095U - Adjustable positioning high-precision bearing - Google Patents

Abstract

The utility model relates to the field of bearings, in particular to an adjustable positioning high-precision bearing. The adjustable positioning high-precision bearing comprises an outer ring, an inner ring, cylindrical rollers, a cage and double movable retaining rings, wherein the cage is arranged between the outer ring and the inner ring; double layers of cylindrical rollers are arranged on the cage; and the double movable retaining rings are closely buckled on the two sides of the bearing. The type of the original bearing is changed, and the original two sets of double-row self-aligning roller bearings are changed to one set of double-row adjustable positioning cylindrical roller bearings; the total height of the inner diameter of the adjustable positioning high-precision bearing is reduced, and two movable retaining rings capable of performing adjustable positioning functions are added; when an axial clearance is changed, the interval of the movable retaining rings can be automatically adjusted, thereby guaranteeing the normal operation of a rolling mill; the radial bearing load can reach up to 682Kn, and the bearing ability is increased by 25% when compared with the original radial bearing load of 546Kn; the service life is also prolonged by 25% than before; and the rotation quality and the rotation precision of the adjustable positioning high-precision bearing are higher than those of a conventional bearing.

Description

The high-accuracy bearing in adjustable location

Technical field

The utility model relates to field of bearings, concretely, relates to the high-accuracy bearing in a kind of adjustable location.

Background technique

Common selfaligning roller bearing comprises bearing inner race, rolling element and bearing outer ring, retainer, bearing outer ring is raceway ringwise, the ring raceway sectional shape is a circular arc, and the radius of this circular arc equals the rolling return radius, the ball journal of this structure can not only bear radial load, can also bear thrust load, the axial displacement of axle is limited in the axial internal clearance limit of bearing, when the bearing physical dimension is restricted, and when bearing the ultimate bearing load greater than existing ball bearing, will reduce greatly the working life of this airframe bearing.On many special devices with specific (special) requirements, physical dimension is little, and bearing load is big, thereby existing ball bearing can't satisfy the requirement of above equipment.

Summary of the invention

Bear radial load and bear the low defective of thrust load for overcoming above ball bearing, the purpose of this utility model provides the high bearing in a kind of adjustable location.

The utility model is made up of outer ring, inner ring, cylindrical roller, retainer, Dual Action back-up ring; Between outer ring and the inner ring retainer is set, double-deck cylindrical roller is arranged on the retainer, the Dual Action back-up ring is from the both sides fastening.

The invention has the advantages that: changed original bearing type,, changed the roller bearing of the adjustable location of a cover biserial into by original two cover double-row self-aligning roller bearings.The bearing bore diameter total height is reduced, add two movable back-up rings, these two movable back-up rings can play the adjustable position effect of adjusting, and when axial internal clearance changed, movable back-up ring is the adjusting play automatically, guaranteed the normal operation of milling train.Radially bearing load can reach 682Kn, has improved 25% bearing capacity than original 546Kn.Also original frequently raising 25% in working life.Rotating mass and rotating accuracy are higher than conventional bearing.

Description of drawings

Fig. 1 is the utility model simplified schematic diagram.

Fig. 2 is the utility model bearing outer ring simplified schematic diagram.

Fig. 3 is the utility model bearing inner race simplified schematic diagram.

Fig. 4 is the utility model retainer simplified schematic diagram.

Embodiment

Fig. 1, Fig. 2, Fig. 3, reference character shown in Figure 4 are as follows: outer ring 1, inner ring 2, cylindrical roller 3, retainer 4,

The utility model is made up of outer ring 1, inner ring 2, cylindrical roller 3, retainer 4, Dual Action back-up ring 5; Between outer ring 1 and the inner ring 2 retainer 4 is set, double-deck cylindrical roller 3 is arranged on the retainer 4, Dual Action back-up ring 5 is from the both sides fastening.

The setting rated load is Ct=682KN:

Outer ring 1 raceway is packed into; Cylindrical roller 3 back two interior fourth contact diameter phase mutual deviations should be less than 0.010mm; Outer ring 1 external diameter is less than 0.008mm; Assembling riveted rear end cover must not become flexible, and rivet head must not become flexible, and rivet head must not protrude the bearing ring end and rotation is flexible; Twice raceway diameter is less than 0.012mm, and the joint of raceway and grinding undercut does not allow cusped edge and burr; The difference 0.012mm of raceway two ends average diameter; Respectively there are 24 pocket holes both sides on retainer 4 circumference, the position, 1/2 hole that offsets mutually, the positions in two row pocket holes.

Claims (1)

1. the high-accuracy bearing in adjustable location is characterized in that: be made up of outer ring, inner ring, cylindrical roller, retainer, Dual Action back-up ring; Between outer ring and the inner ring retainer is set, double-deck cylindrical roller is arranged on the retainer, the Dual Action back-up ring is from the both sides fastening.

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