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AXLE BEARINGS

Railway Axle Bearings are subject to radial impact loads caused by rail joints, switches and sometimes wheel flats, as well as to the static and dynamic radial loads of vehicle weight. They are also liable to receive axial loads generated by lateral movement as trains run on curved rails or in a snaking motion. All of these loads together form complex combinations that act on axle bearings.
Axle bearings must therefore be designed on the basis of not only dimensional requirements of the axle journal and bearing box geometry, but also these complex load conditions. Additionally, as axle bearings play a critical role in the safety of railroad operation, they are periodically disassembled for inspection.
Roller bearings, including tapered roller bearings, spherical roller bearings and cylindrical roller bearings, are increasingly being selected to replace plane bearings in rolling stock axles based on the particular merits of each type.

TEDRAIL supply all the range of railway axle bearings, such as Tapered Bearing Units (TBU), Compact Tapered Bearing Units (CTBU) for the applications including:

  • bearings of the axles for the goods wagons, passenger wagons, electric and diesel locomotives, electric and diesel engine vehicles and motor units which is AAR approved.

  • motors and generators, motors of compressors (air pumps) and drives of ventilators, actuators and charging generator of the electric and diesel locomotive engines.

DOUBLE ROW TAPERED BEARING UNIT - INCH SIZE

  • Double Row Tapered Roller Bearing

  • Comply with AAR M-934, AAR Approved

  • Inch Size Bearing Include:

    • AAR Class B

    • AAR Class C

    • AAR Class D

    • AAR Class E

    • AAR Class F

    • AAR Class K

    • AAR Class G

  • AAR Type Bogie Design

  • Application for Freight Wagons, Coaches, Locomotives

  • Brand as SKF, FAG, TIMKEN

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Table lists

AAR

Type

Size
dDCd2MASS/kgFAGSKFTIMKEN
Class B4 1/4"×8"inch46.54.5514.8TAROL4X8-U-JP

HM120848
HM120817XD

mm101.6165.1114.3127
Class C5"×9"inch4.68857.68755.6255.87524.8TAROL5X9-U-JPBT2-8735 BB

HM124646

HM124618XD

mm119.088195.263142.875149.225
Class D5 1/2"×10"inch5.1888.187566.37527.3TAROL5-1/2X10-U-JPBT2-8547 BB

HM127446

HM127415XD

mm131.775207.936152.4161.925
Class E6"×11"inch5.6878.68756.4377.03 - 7.03234.9TAROL6X11-U-JPBT2-8516 BB

HM129848

HM129814XD

mm144.475220.663163.51178.562 - 178.613
Class F6 1/2"×12"inch6.18799.93757.257.53 - 7.53252.9TAROL6-1/2X12-U-JPBT2-8512 BB

HM133444

HM133416XD

mm157.175252.413184.15191.262 - 191.313
Class K6 1/2"×9"inch6.1889.8426.29927.53 - 7.53240.7TAROL6-1/2X9-U-JPBT2-8606 BB
mm157250160191.262 - 191.313
Class G7"×9"inch7.000510.8757.3128 - 8.00260.1TAROL7X12-U-JPBT2-8609 BB

HM136948

HM136916XD

7"×12"mm178276186203.2 - 203.251
GG6 1/2"inch6.499511.8827.757.905 - 7.90681.4TAROLGG6-1/2-U-JP

mm165.087301.83196.85200.79 - 200.81
GG6 7/8"inch6.874511.8827.757.87 - 7.87377.3TAROLGG6-7/8-U-JP

mm174.612301.83196.85199.898 - 199.974

DOUBLE ROW TAPERED BEARING UNIT - METRIC SIZE

  • Double Row Tapered Roller Bearing

  • Metric bearing units

  • Comply with AAR M-934, AAR Approved

  • Metric Size Bearing Include:

    • 100x175

    • 110x180

    • 130x210

    • 130x220

    • 130x230

    • 130x240

    • 140X220

    • 150x250

    • 160x280

  • AAR Type Bogie Design

  • Application for Freight Wagons, Coaches, Locomotives Brand as SKF, FAG, TIMKEN

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Table lists
SizedDCd2MASS/kgFAGSKF
Metric Sizesmm
100x175100175120126k818.5Z-578693.TAROL100/175-U-TVPCTBU 100x175
110x180110180142140t718F-561286.TAROL110/180-U-TVPCTBU 110x180
130x210130210132150t722Z-517906.TAROL130/210-U-JPCTBU 130x210
130x220130220135160t725.6F-800050.TAROL130/220-U-TVPCTBU 130x220
130x230130230150160t733.7Z-577997.04.TAROL130/230-U-TVPCTBU 130x230
130x240130240160160t738.5F-565057.TAROL130/240-U-TVPCTBU 130x240
140X220140220140160t727Z-517907.TAROL140/220-U-JPCTBU 140X220
150x250150250160170t740F-803295.TAROL150/250-U-TVPCTBU 150x250
160x280160280180189k650.5F-804595.TAROL160/280-U-TVPCTBU 160x280

SINGLE ROW CYLINDRICAL ROLLER BEARING UNIT

  • Single Row Cylindrical Roller Bearing Unit For Axleboxes

  • Metric bearing units

  • Inch Size Bearing Include:

    • 80x150

    • 100x180

    • 120x200

    • 120x240

    • 130x220

    • 130x230

    • 130X240

    • 140x250

    • 160x290

  • Application for Freight Wagons, Coaches, Locomotives Brand as SKF, FAG, TIMKEN,ZWZ,ZKL

  • Bearings of the axles for the goods wagons, passenger wagons, electric and diesel

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Table lists
SizedDBFMASS/kgFAGZKL
Metric Sizesmm
80x140801404295.32.4WJ80X140-TVP WJP80X140-P-TVP
80x1508015045973.69
NJ3216X3M/P54, NJP3216X3M/P54
80x1508015090977.4
NJ/NJP3216X3M/P54
80x17080170581015.9F-565630.ZL F-565631.ZL
90x16090160481074Z-574332.ZL Z-574333.ZL WJ90X160-TVP WJP90X160-P-TVP
100x18010018060.31193.8-6F-565624.ZL F-574334.ZL F-574335.ZL WJ100X180-TVP WJP100X180-P-TVPNJ3220TN1/HG2P54,NJP3220TN1/HG2P54
110x18011018055
5Z-577935.ZL
120x180120180441343.9F-804970.ZL
120x20012020062
16
PLC 49-202
120x24012024080
33.7WJ120X215-TVP WJP120X215-P-TVP WJ120X240-M1 WJP120X240-P-M1 WJ120X240-TVP WJP120X240-P-TVPPLC 410-13 ,PLC 410-13-1, PLC 410-14,PLC 410-14-1
130x220130220621508.69Z-579021.ZL Z-579020.ZL Z-514494.01.ZL Z-514493.01.ZLNJ2226X3TN1/HG2P64 NJP2226X3TN1/HG2P64
130x2301302306415611.9
NJ2226Q1/C4S0 NJP2226Q1/C4S0
130x2401302408015614.95-32.7WJ130X240-M1 WJP130X240-P-M1 WJ130X240-TVP WJP130X240-P-TVPNJ3226X1SCTN NJP3226X1SCTN PLC 410-15 PLC 410-15-2 PLC 410-33-1 PLC 410-33-2 PLC410-215 PLC 410-216
140X2501402506816915.1
NJP2228Q1/C4S0 NJ2228Q1/C4S0
150x2501502506017412.5F-801086.ZL F-801087.ZL
160x2901602908019324.2-27.2F-565626.ZL F-565627.ZLNU2232WBQ1/YB2 NU2232WBQ1/YB2+HJR2 NU2232WB NUHJ2232WB NJ2232WB NJ2232WBY NUHJ2232WBY

BEARING SEALS

Garter seal as mentioned, the first tapered roller bearing units were designed to replace plain bearings. These inch size TBU designs had to match the existing relatively long journal dimension. This design enables the integration of a seal wear ring on both sides where the garter seals are riding. AAR has standardized these garter seals and seal wear rings, which are interchangeable with components from different bearing manufacturers. TEDRAIL can offer SKF seals according to AAR Manual of Standards and Recommended Practices Section H-Ⅱ［S723］-Roller Bearing Manual .TEDRAIL can also provide special LL seal designs for inch size TBUs that generate much lower friction

The LL (labyrinth-lip) seal design is based on a low-friction rubber seal principle that is applied to TBU and CTBU designs. The main features are a combination of labyrinth, lip and flinger elements and improved protection against contaminants to extend bearing service life. The frictional moment can be reduced by up to 75%, compared to a garter seal arrangement. As a consequence, the bearing operating temperature is reduced by 20 ℃, which contributes to longer grease life and energy savings. Results from the seal test, which evaluates water and dust exclusion, confirmed that the design is very effective in excluding contaminants. Long-term endurance tests have successfully been conducted under very severe operating conditions.

LL Bearing Seal Advantages:

  • improved protection against contaminants

  • longer grease life

  • better and longer performance

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TEDRAIL can supply almost all types of rail seal .Normally ,TEDRAIL could offer following rail seal.
Table lists
CLASS(SIZE)AAR SEAL3,3A,3B (Cylindrical Roller Bearing)AAR23 SEAL (Tapered roller bearing)AAR23 LL SEAL (Tapered roller bearing)OTHER SEAL
B(4 1/4 x8)715748A729700BT2-8738 A23TBU
C(5x9)715753A729701BT2-8735 A23/BBCLASS C SEAL SPACIAL (garter seal)
D(5 1/2 x 10)715013A729702BT2-8547 A23/BBTBU ( FOR SEAL BEARING BT2-8547BA)
E(6x11)715763A729703BT2-8516 D23/BBTBU
F(6 1/2 x12)715768A729704BT2-8512 A23/BBTBU
G(7x 12)722473729705BT2-8739 A23 /BT2-8609/ BT2 8690 B-23CTBU
K(6 1/2x9)

BT2-8606CTBU( FOR SEAL BEARING BT2-8720E)