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  • Luoyang Yadian Machinery Equipment Co.,Ltd
    Holly
    Hi Alisa: It has been assembled, and is working smoothly. Thank you very much
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    Mr.Adriana
    So far the YRT580 bearing is ok ,For our other projects, in case we will need similar bearings, we will contact with you.
  • Luoyang Yadian Machinery Equipment Co.,Ltd
    John
    Hello Alisa. The bearing has arrived, in perfect condition. Thank you very much for your help with this order
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YDPB 300XRN50 | 912-309A Tapered cross roller bearings 330.2x457.2x63.5mm NC Vertical boring mills use

  • YDPB 300XRN50 | 912-309A Tapered cross roller bearings 330.2x457.2x63.5mm NC Vertical boring mills use
  • YDPB 300XRN50 | 912-309A Tapered cross roller bearings 330.2x457.2x63.5mm NC Vertical boring mills use
  • YDPB 300XRN50 | 912-309A Tapered cross roller bearings 330.2x457.2x63.5mm NC Vertical boring mills use
  • YDPB 300XRN50 | 912-309A Tapered cross roller bearings 330.2x457.2x63.5mm NC Vertical boring mills use
  • YDPB 300XRN50 | 912-309A Tapered cross roller bearings 330.2x457.2x63.5mm NC Vertical boring mills use
Место происхождения Лоян, Китай
Фирменное наименование YDPB
Сертификация ISO
Model Number 300XRN50 | 912-309A
Количество мин заказа 1pcs
Цена 1$
Packaging Details bearing+thin plastic film+waterproof paper+thin foam+carton/wooden cases
Delivery Time 5-7days
Payment Terms T/T, Western Union, MoneyGram
Supply Ability 1000pcs/month

Contact me for free samples and coupons.

Whatsapp:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

If you have any concern, we provide 24-hour online help.

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Подробная информация о продукте
Model 300XRN50 | 912-309A Material GCr15SiMn
Structure Crossed Cylindrical Roller bearings Dimension 330.2x457.2x63.5mm
Application CNCmachine tool Name Cross-roller Slewing Ring bearing
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Характер продукции

300XRN50 | 912-309A Tapered Cross Roller Bearing 330.2x457.2x63.5mm Nc vertical boring mills
Bearing Model No.: 300XRN50 | 912-309A
(Inner Diameter)d: 330.2mm
(Outer Diameter) D: 457.2mm
(Thickness / Width) B: 63.5mm
                     Cr(KN):100
                     Ca(KN):123
                    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
(oil r/m)
 

 Weight(kg) Exchange model
Inner diameter Outer diameter Width

Chamfer
r(min)

 Radial Cr(KN)

Axial
Ca(KN)

 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:

  • 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

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