NEEDLE ROLLER BEARINGS COMBINED
WITH THRUST BEARINGS

bearings egypt, egypt bearings, NAX
Types
IKO NEEDLE ROLLER BEARING COMBINED WITH THRUST BEARING are available in the various shown in the following table

Table 1 Bearing type
Type
With thrust ball bearing With thrust roller bearing
without
inner ring
without
inner ring
without
inner ring
without
inner ring
- NAXNAXINBXNBXI
With retaining shieldNAX...ZNAXI...ZNBX...ZNBXI...Z

Needle roller bearing combined with thrust ball bearings

These bearing have a thrust ball bearing in the thrust portion and come in two dimension series. The non-separable typy has a thin steel-plate retaining shield fixed to the groove part of the outside surface of the thrust-side outer ring flange. Its shield is effectivein preventing srease leakages and dirt and dust penteration because a labyrinth sealing performance is formed between the thrust washer and retaining shield. This type is identified by suffix 'Z' after the bearing number. For those without an inner ring, the dimensional tolerance of the inscribed circle diameter dr is F6 tolerance, and as is shown in Article 8.1 (Raceway surface) of by combining hardened and ground shaft with the bearing, the desired radial clearance can be attained.

Needle roller bearing combined with thrust roller bearings
These bearing have an IKO THRUST ROLLER BEARING in the thrust portion, and come in two dimension series. The thrusr load rating is higher than that of bearing with thrust ball bearing and the deformation of the roller contacting surface is also smaller when loaded. Furthermore, the thrust load-receiving portion is finished to a high degree of mounted on vertical or horizontal shafts. As bearing with thrust ball bearings, there are types with ratining shields and types with inner ring

Accuracy
The dimensional and rotating accuracy of all IKO NEEDLE ROLLER BEARING COMBINED WITH THRUST BEARINGS, with the exception of the dimensional tolerance shown in table 2, is manufactured to JIS standards.

Table 2 dimensional tolerance
Bearing partSymbol Tolerance
Inscribed circle
dimeter
drF6
Inside diameter
of thrust washer
(dr)E7
Outside diameter
of thrust
D1-0.1
-0.2
Overall width L 0
-0.25
Height of
thrust bearing
H 0
-0.20
Fit
The Fit for IKO NEEDLE ROLLER BEARING COMBINED WITH THRUST BEARINGS, is shown in table 3

Table 3 Fit
ShaftShaft(1)
Without
inner ring
With
inner ring
Housing
bore
H5K5K6,M6
Rating life
As these bearing take radial load on the caged needle roller bearing and thrust load on the thrust bearing, the life for each must be calculated sperarately as shown

Mounting
Mounting samples of IKO NEEDLE ROLLER BEARING COMBINED WITH THRUST BEARINGS are given below. When applying pre-load, do not tightenthe thrust washer directly with a nut, but use a spring, as shown.

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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