Egypt Bearings, Bearings Egypt, Shell Type Needle Roller Bearings

Shell Type Needle Roller Bearings

Type

IKO SHELL TYPE NEEDLE ROLLER BEARINGS are available in the various types shown in the following tables.
Table 1.1 Bearing type
Series Type Caged Full complement
Open end Closeed end Gease ratained
Metric - TLA...Z TLAM YTL
Heavy duty TA...Z TAM YT
Inch - BA...Z BAM YB
Heavy duty BHA...Z BHAM YBH

Table 1.2 Bearing type
Series Type Sealed type with cage
Oneseal Two seal Closed end,one seal
Metric - TLA...U TLA...UU TLAM...U
Heavy duty TA...U TA...U TAM...U

Caged Shell type needle roller bearings

(1)Open end

bearings egypt, egypt bearings, TLA

This type has a very small clearance between the inside diameter of the outer rin grib (marked with bearing number, etc.) and the shaft,which prevents grease leaks and the entry of foreing particles. These bearing have a wide variety of application

(2)Close end

This typy has one end of the outer ring completely close, and is ideally used when prefect closign of sheft ends is desired. The closed ends of the outer rings come in two shapes.One is a flat end in the case that the inscribed circle diemeter dr is less than 22mm. The other is a recess end in the case that the inscribed circle diameter dr exceeds. 22mmThe end thick-ness is classified res pec tively into t1 and t2 in the illustrations provided with the dimension table.
Oil hole
In this type, as standard, inch series bearing have one oil hole and metrric series have none. 'OH' (oil hole) is not indicated on the bearing itself but is printed on the bearing box. Contact IKO if metric series bearings with oil hole are required. Bearing numbers in this case aer as follows. Example: TA 2525Z OH (with 2 oil holes...TA2525Z 2OH)

Fit
Correct dimensional accuracy of these bearing is only found after they have been press-fitted into the housing bore. As the steel used in the outer rings is comparatively thin, bearing accuracy is directly affected by housing dimensions, shipe and rigidity. This fact should be teken into account when considering fit and accuracy. Shaft and housing bore fit is shown in Table 4.

Raceway surface
These bearing are usually used without inner rings and in this case, a raceawy surface hardness of HR C 58 TO 64 and surface roughness of less than Rmax 0.8 is preferable. If operating conditions are not critical, a surface roughness of less than Rmax 3.2 is permissible. If the shaft can not be hardend and ground, IKO INNER RINGS FOR SHELL TYPE NEEDLE ROLLER BEARING (IRT or IRB) may be used.

Mounting
The outer rings of these bearings are firmly press-fitted into the housing bore with an interference fit, so positioning them in the axial direction is unnecessary. As they are made of thin steel, the outer rings must NOT be struck directly with a hammer. The bearing are mounted with the use of the tool shown in Fig 1 BY press-fitting them into thr housing gentiy with the marked said upwards.
TLA 48 ZN 4 8 8
TLA 590 Z 5 9 9
TLA 69 Z 6 10 9
TLA 79 Z 7 11 9
TLA 810 Z 8 12 10
TLA 910 Z 9 13 10
TLA 912 Z 9 13 12
TLA 1010 Z 10 14 10
TLA 1012 Z 10 14 12
TLA 1015 Z 10 14 15
TLA 1210 Z 12 16 10
TLA 1212 Z 12 18 12
TLA 1312 Z 13 19 12
TLA 1412 Z 14 20 12
TLA 1416 Z 14 20 16
TLA 1512 Z 15 21 12
TLA 1516 Z 15 21 16
TLA 1522 Z 15 21 22
TLA 1612 Z 16 22 12
TLA 1616 Z 16 22 16
TLA 1622 Z 16 22 22
TLA 1712 Z 17 23 12
TLA 1812 Z 18 24 12
TLA 1816 Z 18 24 16
TLA 2012 Z 20 26 12
TLA 2016 Z 20 26 16
TLA 2020 Z 20 26 20
TLA 2030 Z 20 26 30
TLA 2212 Z 22 28 12
TLA 2216 Z 22 28 16
TLA 2220 Z 22 28 20
TLA 2512 Z 25 32 12
TLA 2516 Z 25 32 16
TLA 2520 Z 25 32 20
TLA 2526 Z 25 32 26
TLAW 2538 Z 25 32 38
TLA 2816 Z 28 35 16
TLA 2820 Z 28 35 20
TLA 3012 Z 30 37 12
TLA 3016 Z 30 37 16
TLA 3018 Z 30 37 18
TLA 3020 Z 30 37 20
TLA 3026 Z 30 37 26
TLAW 3038 Z 30 37 38
TLA 3512 Z 35 42 12
TLA 3516 Z 35 42 16
TLA 3520 Z 35 42 20
TLA 4012 Z 40 47 12
TLA 4016 Z 40 47 16
TLA 4020 Z 40 47 20
TLA 4516 Z 45 52 16
TLA 4520 Z 45 52 20
TLA 5020 Z 50 58 20
TLA 5020 Z 50 58 25
TLA 5520 Z 55 63 20
TLA 55025 Z 55 63 25

Agent : RIV Company
6 Orabi Street,
P.O.Box 101, Cairo 11511, Egypt
Tel. : +202-5749921, +202-5759921
Fax. : +202-5776236, Tlx. : 92808 RIV UN
E-mail : iko@riv.org

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