Product Details

Product Description

XR678052 cross tapered roller bearing|machine tool bearings|BYC precision bearings|330.2*457.2*63.5mm

Turret bearing|bearing matching size for Machine tool

XR678052 cross tapered roller bearing contains two sets of races and rollers brought together at high angles with alternate rollers facing in opposite directions. The height of cross section is similar to single-row bearing for conserving space and saving bearing housing material.  And the steep-angle, tapered geometry results in a total effective bearing spread much greater than the width of the bearing itself.
It is able to withstand high overturning moments, and is optimal for machine tools, including vertical boring, grinding machines, precision circular dividing table, gear hobbing machine, turret and industrial robots.
XR496051   XR678052  XR766051   XR820060   XR855053    XR882055    XR889058    XR897051
JXR637050   JXR652050  JXR699050

Bearing Type	Main dimensions (mm)				Basic dynamic load rating		Speed Limited Oil	Weight (Kg)
Bearing Type	Inner ring d	Outer ring D	Width T	Chamfer r(mm)	Radial KN	Axial KN	Speed Limited Oil	Weight (Kg)
XR496051	203.2	279.4	31.75	1.5	41	49.2	800	6.5
XR678052	330.2	457.2	63.5	3	80	98.4	620	35
XR766051	457.2	609.6	63.5	3	106	133	520	51
XR820060	580	760	80	5	106	209	300	100
XR855053	685.8	914.4	79.375	3	180	224	260	150
XR882055	901.7	1117.6	82.55	3	225	297	200	185
XR889058	1028.7	1327.15	114.3	3	283	374	160	400
XR897051	1549.4	1828.8	101.6	3	326	489	80	500
JXR637050	300	400	37	1.5	47.2	60	720	13
JXR652050	310	425	45	2.5	61.6	76.5	640	20
JXR699050	370	495	50	3	70.2	89.2	600	30

XR678052 cross tapered roller bearing is able to withstand high overturning moments, and is optimal for machine tools, including vertical boring, grinding machines, precision circular dividing table, gear hobbing machine, turret and industrial robots.
Design Features
l The line contact of races and rollers can offer high rotation accuracy, high stability and high rigidity.
l The adjustment design of pro-load extend the bearing using life , increase the rigidity and reach the smallest runout.
l The nylon spacers has low inertia and small running torque.
l High rotation accuracy and high rigidity , and conserving material costs.

l The steep-angle, tapered geometry results in a total effective bearing spread much greater than the width of the bearing itself.

Packaging & Shipping

1. Industrial Neutral Packing,Package as your requirements.

2. Small size Bearings:Plastic vacuum packaging bag+Paper Box/Neutral Carton

3.Large size Bearings:Plastic film+Pergamyn paper+Roll tape+Wooden Box

4.Shipping:By air or By sea:DHL/TNT/UPS/EMS etc

Our Services

Installation Procedure:

1.Thoroughly clean the housing and other parts to be installed, and check to determine if deburring is required.

2.Since the Crossed Roller bearing is a thin-wall bearing type and therefore tends to misalign when it is installed, in case of this situation,gradually drive the product into the housing or onto the shaft by gently hitting it with a plastic hammer, while keeping the product horizontal. Taking care, continue to hammer until it fully contacts the reference surface.

3.Place the presser flange onto the Crossed Roller bearing . Rock the flange several times to match the bolt holes.

4.Insert the presser bolts into the holes. Manually turn the bolts and make sure they do not display skewing caused by misalignment of the holes.

5. As is shown in the pictures below:Tighten the presser bolts in three to four steps from light to full tightening byrepeatedly securing the bolts in diagonal order.When tightening the separable inner or outer ring, slightly turning the integral outer or inner ring will correct the dislocation between the ring and the body.

Nowadays, as a professional percision bearing manufacture, we are proud of continual innovation, flexible production, speedy delivery, rapid after-sales service(2 years) and quick response.