Active Member
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[China]
Address: National University Science Park ,Penglai Rd,Jianxi,Luoyang ,China
Contact name:wang
Luoyang Yadian Machinery Equipment Co.,Ltd |
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Timken XR490651 Tapered Cross Roller Bearing 203.2x279.4x31.75mm Nc vertical boring mills
Bearing Model No.: XR496051
(Inner Diameter)d: 203.2mm
(Outer Diameter) D: 279.4mm
(Thickness / Width) B: 31.75mm
Material:GCr15SiMn
Delivery: in stock
Related Taper crossed roller bearings
XR496051/616093A,
XR678052/615661A/912-309A/300XRN50
XR766051/615894A/912-308A/0457XRN060/XD.10.0457P5
XR820060/615662A/580XRN76/912-304A/XD.10.0580P5
XR855053/615659A/0685XRN091/912-305A/XD.10.0686P5
XR882055/615895A/0901XRN112/912-306A/XD.10.0902P5
XR889058/ BFKB353282/H4A /1028XRN132/912-307A/XD.10.1029P5
XR897051/615898A/XD.10.1549P
JXR637050,JXR652050,JXR699050
More parameters
| Model | Main dimension(mm) | Basic dynamic load rating | Limit speed | Weight(kg) | Exchange model | |||||||
| Inner diameter | Outer diameter | Width | Chamfer | Radial Cr(KN) | Axial | SKF | NACHI | URB | ||||
| XR490651 | 203.2 | 279.4 | 31.75 | 1.5 | 51.2 | 61.4 | 800 | 6.5 | 616093A | - | - | - |
| XR678052 | 330.2 | 457.2 | 63.5 | 3 | 100 | 123 | 620 | 35 | 615661A | 300XRN50 | - | 912-309A |
| XR766051 | 457.2 | 609.6 | 63.5 | 3 | 141 | 178 | 520 | 51 | 615894A | 0457XRN060 | XD.10.0457P5 | 912-308A |
| XR820060 | 580 | 760 | 80 | 5 | 215 | 234 | 300 | 100 | 615662A | 580XRN76 | XD.10.0580P5 | 912-304A |
| XR855053 | 685.8 | 914.4 | 79.375 | 3 | 270 | 343 | 260 | 150 | 615659A | 0685XRN091 | XD.10.0686P5 | 912-305A |
| XR882055 | 901.7 | 1117.6 | 82.55 | 3 | 300 | 395 | 200 | 185 | 615895A | 0901XRN112 | XD.10.0902P5 | 912-306A |
| XR897051 | 1549.4 | 1828.8 | 101.6 | 3 | 516 | 698 | 80 | 500 | 615898A | - | XD.10.1549P5 | - |
| JXR637050 | 300 | 400 | 37 | 1.5 | 63 | 80.1 | 720 | 13 | - | - | - | - |
| JXR652050 | 310 | 425 | 45 | 2.5 | 82.2 | 102 | 640 | 20 | - | - | - | - |
| JXR699050 | 370 | 495 | 50 | 3 | 93.6 | 119 | 600 | 30 | - | - | - | - |
Structure of Tapered Roller Bearings XR series
Precision crossed roller bearings (XR) are designed to offer the
highest levels of rotational accuracy and rigidity while conserving
space and saving material costs. The bearing features two sets of
races and rollers brought together at right angles with alternate
rollers facing in opposite directions. This allows two half-rows of
rollers to fit into the space of one. The steep-angle, tapered
geometry results in a total effective bearing spread much greater
than the width of the bearing itself.
Able to withstand high overturning moments, the crossed roller
bearing is ideal for the table bearing of machine tools, including
vertical boring and grinding machines. It is uniquely suited to
many other pivot and pedestal applications where space is limited
or the lowest possible center of gravity of a rotating mass is
required.
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.)
Design Attributes:
Vertical boring mills
Vertical grinding machines
Other machine tools
Payment Terms:
Most of our customers use T/T( 40% in advance, Balance before
shippment), Western Union ,Money Gram, for larger amount consider
LC, all can be negotiable.
Many other precision bearings series available
1.INA YRT rotary table bearings YRT50.....YRT1200
2.INA YRTS high speed Axial Radial Load Rotary table bearing
YRTS200....YRTS460
3.INA YRTM rotary table bearings with AMO angle measuring system to
improve the accurancy. YRTM150.....YRTM460
4.INA ZKLDF serie bi-direction thrust angular contact ball bearings
ZKLDF100.....ZKLDF460
5.THK (IKO) RB/CRB/CRBC series crossed roller bearings Inner ring
rotate bearing id 35mm----1500mm
6.THK RE series crossed roller bearings ,Outer ring rotate id
35mm----1500mm
7.THK RA thin section crossed roller bearing id 100mm---200mm
8.THK SX series crossed roller bearings ,ID 70mm--------500mm
9.THK RU Series integrate inner ring and outer ring ,industrial
robots use cross roller bearing RU42---RU445
10.INA XU/XSU series cross roller slewing
bearing,XU050077---XU300515,XSU080168---XSU090398
11.IKO CRBH series integrate inner ring and outer ring cross roller
bearing CRBH5013------CRBH25025
12.Timken XR/JXR Crossed Tapered Roller Bearings ,used for high
speed vertical lathe
XR496051---XR,XR678052,XR766051,XR855053,XR882055,XR889058,JXR637050,JXR652050,JXR699050.
13.Kaydon Thin section ball bearings KA,KG,KD series.
14.Ceramic bearings
15.Slewing bearings
16.Custom made bearings
Online shopping Address: www.ydpbbearings.com
