618/850 MA Deep groove ball bearings 850X1030X82mm

Model: 618/850 MA
Place of Origin: Zhejiang,China (Mainland)
Brand Name: RNB OR NATURAL
Number of Row: Single row
Type: Ball bearings
Material of race: Chrome steel
Material of ball: Chrome steel
Precision: P6

inquiry

basketAdd to Basket  Edit

Share |

Product Description

Payment & Shipping Terms Supply Capacity
Payment Terms:L/C, T/T, WUProduction Capacity:500Piece/Pieces per...
Min. Order:1 Piece/PiecesPacking:RNB OR NATURAL
Means of Transport:Ocean, AirDelivery Date:30 days

Deep groove ball bearings   618/850 MA

Demension: 850X1030X82mm,   weight:127.5kg.

1)Materials for rings and rolling elements

While the contact surfaces between the bearing rings and rolling elements are subjected to repeated heavy stress,they must still maintain high rotational precission,therefore, the materials used for bearings rings and rolling elements require the following characteristics:

●High rolling contact fatigue strength
●High hardness
●High wear resistance
●High dimensional stability
●High mechanical strength

The material used by our companyis high carbonchromium bearings steel GCr15-GB/T18254 equivalent such as AISI52100(USA),DIN100Cr6(Germany) JISSUJ2(Japan) and BS534A99(UK).

2)Materials for cages

The materials for cages must have strength to with stand rotation at load and shock load. Low frictional efficiency light weight and be able to with stand operation temperature.

The material used in ribbon cages or crown cages is 08F or SPCC pressed.

It is chemical compositionis shown for extra-high speed application. Plastic cages such as glass reinforced polymideareused.

These plastic crown have the advantages oflow torque,long grease lefe and low noise,etc.

3)Vibration and noise

● The measuring parameter of vibration adopted by RNB is the vibration acceleration of vibration velocity.

● The measuring units and measuring method are specified by JB/T5314 and JB/T5313 In the process of measuring vibration strictly controlled noise by using acoustics.

4)Internal clearance

Single row deep groove ball bearings are manufactured with Normal radial internal clearanceas standard. Most of the bearings are also available with C3 radial internal clearance. Some of the bearings can also be supplied with as maller C2 clearance or the much greater C4 or C5 clearances. In addition, deep groove ball bearings are available with reduced or displaced internal clearance ranges. These special clearances may use reduced ranges of standard clearance classes or partitions of adjacent classes, see designation suffix CN insection.

5)Tolerances

Single row deep groove ball bearings are manufactured as standard to normal tolerances.

Single row deep groove ball bearings are produced to higher precision than the ISO Normal tolerances. The dimensional accuracy corresponds to P6 tolerances, expect the width tolerance,which is considerably tighter and reduced to

-0/–60μm for bearings with outside diameter up to 110 mm
-0/–100 μm for larger bearings.

The running accuracy depend on the bearing size and corresponds to

-   P5 tolerances for bearings up to a 52mm outside diameter
-   P6 tolerances for bearings above 52 mm up to 110 mm outside diameter
-   Normal tolerances for larger bearings.

For bearing arrangements where accuracy is a key operational factor, some SKF single row deep groove ball bearings are also available with accuracy completely to P6 or P5 tolerance classs pecifications.The availability of these bearings should always be checked before ordering.

Item   No.Boundary   dimentionRated loadWeight
dDBCrCorkg
618/750750920785151240110
619/75075010001127451790260
618/78078095078


618/800800980825451360133
619/80080010601158152100280
618/8508501030825551300144
619/85085011201188152150315
618/9009001090856001430155
619/90090011801228302270355
618/9509501150906631620188
619/95095012501329852850395
618/1000100012201006351720230
619/1000100013201409852880525
618/1060106012801007102140265
619/1060106014001509853030615
618/1120112013601067252180310
619/11201120146015010103070640
60/112011201580200143044801245
618/1180118014201069202580310
619/11801180154016011153630765
618/1250125015001128302740390
66/1280F1128015601509392750606
618/1320F3132016001229552830520
619/132013201720175114035001112
618/14001400170013210703980620
619/140014001820185155055201260
618/15001500182014011904310695
619/150015001950195168062201515
618/16001600195015512404750975
619/160016002060200182063001711
618/170017002060160124049501110
619/170017002180212195076801930


Category: Single row deep groove ball bearing

Related Category: Single row deep groove ball bearing