
NN3020KP4W33 100*150*37mm Double Row Cylindrical Roller Bearing Torsion Resistant
Contact Person : Dave-Lee
Phone Number : +86 13213639372
WhatsApp : +8613213639372
Minimum Order Quantity : | 1 | Price : | USD |
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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 |
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Certification: | ISO9001 | Model Number: | BCZ 0517A |
Detail Information |
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Material: | GCr15SiMn Or G20cr2ni4a | Accuracy: | P5,SP,P4 Or P2 |
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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:
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
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