Product Details

Tapered crossed roller bearings

Timken Standard XR/JXR serie The bearing features two sets of races and rollers brought together at right angles with alternate rollers facing in opposite directions. The height of the cross section is more or less sam with the single row bearing,so it can save space and bearing housing material.this series bearings with high precision,high rigidity and able to withstand higher overturning moments, is ideal for the table bearing of machine tools, including vertical boring and grinding machines etc.

Size range:

ID 203.200 mm to 2463.800 mm (8.000 in. to 97.000 in.)
OD 279.400 mm to 2819.400 mm (11.000 in. to 111.000 in.)

More parameters

Bearings Model	Boundary dimensions				Exchange model
	Boundary dimensions				Exchange model
	d	D	B	r	SKF	NACHI	URB	PSL
	mm	mm	mm	min	SKF	NACHI	URB	PSL
JXR637050	300	400	36.492	1.5
XR637050	300	400	37	1.5	616094A	300XRN50
JXR678054	300	480	60	1.5
JXR652050	310	425	45	2.5	BFKB634097
XR678052	330	457	63.5	3.3	615661A	300XRN50		PSL912-309A

Design Attributes:

Provides benefits of two-row bearings in single-row space.

Withstands high overturning moments.
Combines the compactness of a single-row bearing with the stability of a two-row bearing.

Product Application

Vertical boring mills
Vertical grinding machines
Other machine tools

XR496051/616093A,

XR678052/615661A/PSL912-309A/300XRN50

XR766051/615894A/PSL912-308A/0457XRN060/XD.10.0457P5

XR820060/615662A/580XRN76/PSL912-304A/XD.10.0580P5

XR855053/615659A/0685XRN091/PSL912-305A/XD.10.0686P5

XR882055/615895A/0901XRN112/PSL912-306A/XD.10.0902P5

XR889058/ BFKB353282/H4A /1028XRN132/PSL912-307A/XD.10.1029P5

XR897051/615898A/XD.10.1549P5

JXR637050,JXR652050,JXR699050

More information,pls contact us free.