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Sendzimir Back - up Backing Bearing for Rolling Mill Cylindrical Roller Bearing BCZ 0517 A

Minimum Order Quantity : 1 Price : USD
Packaging Details : Single box/Wooden case Delivery Time : 7-35 days
Payment Terms : TT Supply Ability : 1000/pcs/week
Place of Origin: LUOYANG Brand Name: MONTON
Certification: ISO9001 Model Number: BCZ 0517A

Detail Information

Material: GCr15SiMn Or G20cr2ni4a Accuracy: P5,SP,P4 Or P2
Brand: Monton Or Neutral Packing: Single Packing+Pallet
Application: Sendzimir Cold Rolling Mill Industry: Steel Factory
Roller: Multi-column Market: Germany,italy,USA,Japan,etc
Name: Sendzimir Rolling Mill Bearings
High Light:

spherical roller bearing

,

sealed cylindrical roller bearings

Product Description

Product Description


Backing bearings have been specially developed for cold rolling mills of the cluster type, but can also be used for other applications, e.g. straightening or bending machines.

Backing bearings are roller bearings having a particularly thick-walled outer ring and can be mounted on stationary support shafts to form back-up or straightening rolls. The forces from the work rolls are transmitted via the support shaft and a system of support saddles to the roll or machine stands.

Backing bearings for cluster mills are produced in many designs but are generally based on double or three-row cylindrical roller bearings. Single row needle roller bearing and double row tapered roller bearing designs are also available. The logarithmic contact profile between rollers and raceways produces a vastly improved stress distribution under all load conditions as well as when the bearing is misaligned under load. An optimised finish on all surfaces in contact serves to enhance lubrication conditions.

 

 

 

Backing bearings for cluster cold rolling mills d 70 – 180 mm lists

Dimensions                 Mass Designation Design
d D H B C d1, F D1, E rmin K N1)      
mm                 kg
                         
70 160 44,98 90 90 82,8 108,8 1 5 2¥4 10,5 315268 B 1
  160 44,98 90 90 82,8 108,8 1 5 2¥4 12 315268 BC 2
  165 47,5 120 118 90 110 1,5 5 1 14,5 BCZ-0510 3
  165 47,5 120 118 90 110 1,5 5 1¥1 14,6 BCZ-0503 AA 3
90 220 64,98 120 120 130 149 1,1 5 2¥6 30 316737 AB 4
  220 64,98 120 120 130 149 1,1 5 2¥6 26,5 316737 AC 5
  220,02 65 96 94 120 150 2,3 6 6 20,5 BCZ-0508 6
  220,02 65 120 119 119 177 2 6 6 26 BCZ-0507 7
  220,02 65 122 119 117,5 177 2 6 6 26,74 BCZ-0512 9
100 225 62,48 120 120 120,3 156,3 1,1 5 2¥6 28 315018 A 1
  225 62,48 120 120 120,3 156,3 1,1 5 2¥6 24,5 315018 C 2
  225 62,5 120 118 130 183 2,3 - - 26,1 BC2B 326495 A/HB1 8
  225 62,5 120 120 131 145 2 - - 27,7 BCZ-0513 8
  225 62,47 80 80 120,3 156,3 1,1 5 6 20,6 BCZ-0514 10
  225 62,48 120 118 128,5 182,2 0,5 5 1 27 BCZ-0509 9
110 260 74,98 98 98 134 190 1 6 6 31 BC2B 322564 10
  260 74,98 110 109 145 220 1 6 6 33,5 BCZ-0504 11
130 300 84,97 172,64 172,64 159,4 218,4 2,7 8 2¥6 72,5 314833 B 2
  300 84,97 172,64 172,64 159,4 218,4 2,7 8 2¥6 72,5 314833 BC 2
  300 84,97 160 159,5 159,4 218,4 2,7 6,5 2¥6 66,6 319028 A/HA2 2
  300,02 84,99 132 129   204 3 8 6 49 BCZ-0517 A 11
180 406,42 113,16 171,04 171,04 217,3 293,4 1,1 8 2¥6 120 316388 AB 12
  406,42 113,16 217 217 217,3 293,4 1,1 8 2¥6 165 315020 AB 12
  406,42 113,16 224 224 217,3 293,4 1,1 8 2¥6 170 315515 AB 12

 

The accuracy list

 

d Δdmp Δds Vdp Vdmp ΔBs ΔB1s VBs Kia Sd Sia1)
mm μm μm μm μm μm μm μm μm μm μm
- 2,5 0 -4 0 -4 4 3 2 0 -40 0 -250 2,5 2,5 3 3
2,5 10 0 -4 0 -4 4 3 2 0 -40 0 -250 2,5 2,5 3 3
10 18 0 -4 0 -4 4 3 2 0 -80 0 -250 2,5 2,5 3 3
18 30 0 -5 0 -5 5 4 2,5 0 -120 0 -250 2,5 3 4 4
30 50 0 -6 0 -6 6 5 3 0 -120 0 -250 3 4 4 4
50 80 0 -7 0 -7 7 5 3,5 0 -150 0 -250 4 4 5 5
80 120 0 -8 0 -8 8 6 4 0 -200 0 -380 4 5 5 5
120 180 0 -10 0 -10 10 8 5 0 -250 0 -380 5 6 6 7
180 250 0 -12 0 -12 12 9 6 0 -300 0 -500 6 8 7 8
250 315 0 -15 0 -15 - - - 0 -350 0 -500 7 8 7 10
315 400 0 -19 0 -19 - - - 0 -400 - - 8 10 8 12
400 500 0 -23 0 -23 - - - 0 -450 - - 9 10 9 13
500 630 0 -26 0 -26 - - - 0 -500 - - 10 12 10 15
630 800 0 -32 0 -32 - - - 0 -750 - - 15 15 15 20
800 1 000 0 -40 - - - - - 0 -1 000 - - 21 20 21 25

 

 

The section tolerance selecting

 

Cross sectional Section H
Height set Tolerance
  Max Min
- mm
A 0 -0.005
B -0.005 -0,010
C -0,010 -0,015
     
4 0 -0.002
3 - 0,002 -0,004
2 - 0,004 -0,006
1 - 0,006 -0,008
0 - 0,008 -0,010

Character:

 

  1. The load is much higher than the normal bearings during working
  2. The working situation is very bad,when the roller cools, the oxide splash easily goes into the bearing
  3. The requirement for the bearing design and the accuracy is very high,the accuracy usually much be P4 higher.The different bearing section in the same shaft must be control to 0.005mm.

 

The material suggestion:

 

According to the Sendzimir rolling mill bearing character,the material is very important.For the three codes you inquired,we suggest to use the SKF6 or GCr18Mo for the outer ring,the roller and the inner ring use SKF 3 material.The bearings belong to the small size bearings in the backup bearings series,the inner ring is very thin we don’t suggest to use case harden material.On the other side,the rigidity of the inner ring is much lower compared with the roller or the outer ring in the backup bearing series,if we use the case harden material for the inner ring,due to the low hardness of the core case harden material,the bearings will be easily case elastic deformation and the bearings will be easily case Premature failure problem.

 

The heat treatment:

Use the world more advanced Aichelin furance to guarantee the high heat treatment level

The production:

 

The accuracy is P4

The rolling generatrix is a logarithmic curve, which improves the stress distribution under heavy load

Guarantee the section face tolerance

sendzimir rolling mill bearings

Sendzimir Back - up Backing Bearing for Rolling Mill Cylindrical Roller Bearing BCZ 0517 A 1

 

sendzimir rolling mill bearings

sendzimir rolling mill bearingssendzimir rolling mill bearings

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