NTN-SNR BEARING RULMENTI S.R.L.

Single row tapered roller bearings

Taper roller bearings can take both axial and radial loads. The axial load carrying capacity of the bearings is largely determined by the contact angle α as shown in the figure below. If the contact angle α is larger, then the axial load carrying capacity is higher and vice versa.

Taper roller bearings are designed in such a way that vertices of the cone for each roller and those for the inner and outer raceways coincides on the bearing axis or extensions of the raceways and rollers converge at a common point on the axis of rotation. This results in true rolling motion of the rollers on the raceways at every point along the rollers. The taper roller bearings support radial loads and axial loads from one direction only. The line contact between rollers and raceways provide the bearings with a high load carrying capacity.

Steep angle taper roller bearing with exceptionally steep cone angle enables the bearings to take heavier axial load. The bearings are of separable type, enabling separate mounting of cups and cones.

Since the taper roller bearings can absorb thrust loads in one direction only, these bearings should generally be installed as opposed mountings. The correct amount of radial and axial clearance is obtained by adjusting the two bearings against each other.

200 mm x 360 mm x 58 mm NTN 30240U Single row tapered roller bearings: D : 230.0000 mm; Fillet Radius rb : 1.00 mm

190 mm x 340 mm x 55 mm NTN 30238U Single row tapered roller bearings: Fatigue load limit Pu : 45 kN; Da max. : 138 mm

180 mm x 320 mm x 52 mm NTN 30236U Single row tapered roller bearings: Specific static load factor K0 : 80 N/mm²; Tolerance shaft : h9

120 mm x 215 mm x 40 mm NTN 30224U Single row tapered roller bearings: Hydraulic nut : HMV 142 E; Nut for removal : HM 31/710

110 mm x 200 mm x 38 mm NTN 30222U Single row tapered roller bearings: Sealed Speed Rating n3 : 3200 rpm; Grease Speed Rating n1 : 3200 rpm

170 mm x 310 mm x 52 mm NTN 30234U Single row tapered roller bearings: Basic static load rating C0 : 1400 kN; E : 304.2 mm

105 mm x 190 mm x 36 mm NTN 30221U Single row tapered roller bearings: Fillet Radius rb : 1.00 mm; Basic Dynamic Radial Load Rating C : 47500 N

150 mm x 270 mm x 45 mm NTN 30230U Single row tapered roller bearings: d : 120 mm; Minimum load factor A : 5

140 mm x 250 mm x 42 mm NTN 30228U Single row tapered roller bearings: Basic Static Radial Load Rating Co : 83000 N; Grease Speed Rating n1 : 3800 rpm

160 mm x 290 mm x 48 mm NTN 30232U Single row tapered roller bearings: r1,2 min. : 3 mm; B : 178 mm

140 mm x 250 mm x 42 mm NTN 30228 Single row tapered roller bearings: d : 80 mm; Specific dynamic load factor K : 100 N/mm²

130 mm x 230 mm x 40 mm NTN 30226U Single row tapered roller bearings: Fillet Radius rb : 0.60 mm; Basic Dynamic Radial Load Rating C : 62400 N