ZWRZ Tapered roller bearing 331series

1.Tapered roller bearing are applicable for heavy load and impact load. 2.High quality with reasonable price. 3.Quick delevery

Tapered roller bearing is designed in such a way that cone paexes of inner ring raceway,outer ring raceway and roller raceway intesects at one point of its central line.Beside metric series products,there are inch series products,which are applicable for heavy load and impact load.

1,Single row tapered roller bearing

It can bear simultaneously radial load and single row axial load.

When carrying radial load,it creates axial thrust load.Thus two bearings are configured (or combined)face to face or back to back.

According to contact angle difference,it is classified into three types:small come angle, medium cone angle and big cone angle.

2,Double row tapered roller bearing

It is classifide into two types:capped and open.

The former equips two raceway outer rings and two single raceway inner rings.The latter equips two raceway outer rings and one double raceway inner ring.Both of them can bear radial load and double row axial load.In order to make bearing having required internal clearance after eing installed,its inner/outer spacer are thinned preciously.

3,Four row tapered roller bearing

Four row tapered roller bearing is composed of two double row inner rings and one double row outer ring consisting two single outer rings.Between two inner rings,there is one inner spacer.Among these three outer rings, two central spacer is furnished,which can be used to adjust clearance. When borne by heavy radial load, it can bear simultaneously acial load in two different directions.But its allowed speed is not much,which is mainly used for roller bearing of rolling mill.In recent years,fout row tapered roller bearing with double face seal is manufactured and gradually used in diferent industries.

Small sized bearing of this kind is generally made by bearing steel.For large sized one, its is made by carburizing steel.For extremely large sized one,it is made consisting hollow roller and support cage to elongate its sercice life.

4,Tolerance and clearance

Its tolerance is P0 generally.Bearing with much more high level tolerance can be tailored according to client's manufacturing.During assembly,its clearance shall be adjusted according to adjustment specification and bearing manufacturing agreement(or standard clearance if there is no manufacturing agreement).After operating a certain period,client can readjust clearance.

Type	d(mm)	D(mm)	B(mm)	Type	d(mm)	D(mm)	B(mm)
29412	60	130	42	29438	190	380	115
29413	65	140	45	29440	200	400	122
29414	70	150	48	29444	220	420	122
29415	75	160	51	29448	240	440	122
29416	80	170	54	29452	260	480	132
29417	85	180	58	29456	280	520	145
29418	90	160	60	29460	300	540	145
29420	100	210	67	29464	320	580	155
29422	110	230	73	29468	340	620	170
29424	120	250	78	29472	360	640	170
29426	130	270	85	29476	380	670	175
29428	140	280	85	29494	480	850	224
29430	150	300	90	294/500	500	870	224
29432	160	320	95	294/600	600	1030	258
29434	170	340	103	294/750	750	1280	315
29436	180	360	109

ZWRZ Tapered roller bearing 331series