NTN 4-Row Cylindrical Roller Bearings 4R3817:
1) The bearings are mainly used in the roll necks of steel rolling mills and designed so that the load rating is maximized in the allowable space of the roll neck part.
2) The cage types include a comb type cage and a pin type cage (that uses hollow rollers). The pin type cage maximizes the number of rollers for high load capacity.
3) Carburizing (case hardened) steel is used in some cases to prevent inner ring cracks and to improve shock resistance.
4) Consult us for bearing internal clearance and fits to be used for back-up rolls of rolling mills.
5) There are many varieties of these bearings, including bearings which are sealed, have tapered bores, designed for high speed, have creep prevention, etc. Contact us for further
details.
| Boundary dimensions mm | dynamic kN | Basic load ratings | static | Bearingo numbers | Drawing2 No. | ||||||||||||||
| static | dynamic kgf | ||||||||||||||||||
| 170 | 260 | 225 | 225 | 2.5 | 2.5 | 1,310 | 3,150 | 134,000 | 320,000 | 4R3431 | A | ||||||||
| 180 | 250 | 156 | 156 | 2.5 | 2.5 | 895 | 2,180 | 91,500 | 223,000 | 4R3625 | A | ||||||||
| 250 | 168 | 168 | 2 | 2 | 885 | 2,470 | 90,000 | 252,000 | 4R3639 | A | |||||||||
| 260 | 168 | 168 | 2.5 | 2.5 | 1,020 | 2,400 | 104,000 | 244,000 | 4R3628 | A | |||||||||
| 265 | 180 | 180 | 2.5 | 2.5 | 1,090 | 2,510 | 111,000 | 256,000 | 4R3618 | A | |||||||||
| 190 | 260 | 168 | 168 | 2.5 | 2.5 | 980 | 2,600 | 100,000 | 265,000 | 4R3820 | A | ||||||||
| 270 | 170 | 170 | 2.5 | 2.5 | 1,090 | 2,660 | 111,000 | 272,000 | 4R3818 | A | |||||||||
| 270 | 200 | 200 | 2.5 | 2.5 | 1,260 | 3,100 | 128,000 | 315,000 | 4R3821 | A | |||||||||
| 270 | 200 | 200 | 2.5 | 2.5 | 1,230 | 3,200 | 125,000 | 330,000 | 4R3817 | A | |||||||||
| 280 | 200 | 200 | 2.5 | 2.5 | 1,240 | 2,910 | 126,000 | 297,000 | 4R3823 | B | |||||||||
| 280 | 200 | 200 | 2.5 | 2.5 | 1,240 | 2,910 | 126,000 | 297,000 | 4R3830 | C | |||||||||
| 200 | 270 | 170 | 170 | 2.5 | 2.5 | 970 | 2,610 | 99,000 | 266,000 | 4R4039 | A | ||||||||
| 280 | 152 | 152 | 2.1 | 2.1 | 1,000 | 2,320 | 102,000 | 237,000 | 4R4054 | B2） | |||||||||
| 280 | 170 | 170 | 2.5 | 2.5 | 1,040 | 2,430 | 106,000 | 248,000 | 4R4048 | A | |||||||||
| 280 | 190 | 190 | 2.5 | 2.5 | 1,190 | 3,150 | 121,000 | 320,000 | 4R4026 | A | |||||||||
| 280 | 200 | 200 | 2.5 | 2.5 | 1,310 | 3,300 | 134,000 | 335,000 | 4R4037 | A | |||||||||
| 280 | 200 | 200 | 2.5 | 2.5 | 1,250 | 3,350 | 127,000 | 340,000 | 4R4027 | A | |||||||||
| 290 | 192 | 192 | 2.5 | 2.5 | 1,290 | 3,150 | 132,000 | 320,000 | 4R4041 | A | |||||||||
| 210 | 290 | 192 | 192 | 2.5 | 2.5 | 1,230 | 3,350 | 126,000 | 340,000 | 4R4206 | A | ||||||||
| 220 | 290 | 192 | 192 | 2.5 | 2.5 | 1,190 | 3,350 | 122,000 | 340,000 | 4R4413 | A | ||||||||
| 300 | 160 | 160 | 2.5 | 2.5 | 1,000 | 2,590 | 102,000 | 264,000 | 4R4419 | A | |||||||||
| 300 | 160 | 160 | 2.1 | 2.1 | 1,000 | 2,590 | 102,000 | 264,000 | 4R4445 | C | |||||||||
| 310 | 192 | 192 | 2.5 | 2.5 | 1,350 | 3,550 | 138,000 | 360,000 | 4R4410 | A | |||||||||
| 310 | 192 | 192 | 2.5 | 2.5 | 1,390 | 3,400 | 141,000 | 350,000 | 4R4426 | A | |||||||||
| 310 | 204 | 204 | 2.5 | 2.5 | 1,420 | 3,750 | 144,000 | 385,000 | 4R4425 | A | |||||||||
| 310 | 215 | 215 | 2.5 | 2.5 | 1,530 | 3,750 | 156,000 | 380,000 | 4R4420 | A | |||||||||
| 310 | 225 | 225 | 2.5 | 2.5 | 1,480 | 3,950 | 151,000 | 405,000 | 4R4416 | A | |||||||||
| 310 | 225 | 225 | 2.5 | 2.5 | 1,590 | 3,950 | 162,000 | 400,000 | 4R4449 | A | |||||||||
| 320 | 160 | 160 | 3 | 3 | 1,190 | 2,550 | 121,000 | 260,000 | 4R4428 | A | |||||||||
| 320 | 210 | 210 | 2.5 | 2.5 | 1,550 | 3,650 | 158,000 | 370,000 | 4R4429 | A | |||||||||
| 320 | 210 | 210 | 2.5 | 2.5 | 1,560 | 3,600 | 159,000 | 370,000 | 4R4444 | A | |||||||||
| 230 | 330 | 206 | 206 | 2.5 | 2.5 | 1,510 | 3,900 | 154,000 | 395,000 | 4R4610 | A | ||||||||
| 330 | 206 | 206 | 2.5 | 2.5 | 1,520 | 3,800 | 155,000 | 385,000 | 4R4614 | A | |||||||||
CMTG BEARING CO.,LIMITED. has been engaged in bearing industry for many years, we provide a wide selections of brands, including FAG bearing, SKF bearing,NSK bearing,Nachi bearing, TIMKEN bearing, THK Linear Guide and Linear Block …ect.
Bearing typies including standard bearing and non-standard bearings, linear bearings, automotive bearings, large bearings, railway bearings,spherical plain bearings, high temperature,super-precision bearings, as well as some rare types customized to your need.
Bearings are exported to more than 50 countries and regions in the world, many types of inventory stock.
FAST DELIVERY, FREE SAMPLES, BEST SERVICES…
Contact us if any bearing in demand . we will check and revert ASAP.
Warmly welcome your inquiry.
