TimkenTapered Roller Bearing Cone and Cup Assembly – 110 mm Bore, 170 mm Outside Diameter, 70 mm Width

Product Description

What this part is

Timken JP11048/JP11019HR metric tapered roller bearing assembly, a matched single cone and single cup from the Timken Fafnir super precision machine tool range. Bore Diameter: 110 mm. Outside Diameter: 170 mm. Overall Width: 70 mm. Cone Width: 35 mm. Series: JP11000. Base Number: JP11048. Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Bearing Material: Steel. Design Units: Metric.

Decoding the designation

JP11048 — cone half of the pair. JP11 fixes the 110 mm bore family and 048 is the cone number.

JP11019HR — cup half of the pair, matched to the JP11048 cone and carrying the HR machine tool cup execution.

90CA1 — Timken assembly number: it designates the complete assembly, the cone-and-cup pairing supplied as a matched set, rather than either component on its own.

What these specs mean in practice

K Factor: 1.63. G1 Factor: 140.4. G2 Factor: 56.1. A K factor of 1.63 is the steepest in the metric JP machine tool range, so this pairing takes a larger share of its capacity as thrust than the JP12 and JP13 sizes.

Bearing frequency coefficients, for vibration analysis against shaft speed — FTF Inner: 0.452. FTF Outer: 0.548. Ball Spin Frequency (BSF): 4.955. Ball Pass Frequency Outer (BPFO): 9.937. Ball Pass Frequency Inner (BPFI): 12.063. Multiplying these by shaft speed gives the defect frequencies for condition monitoring on this bearing.

Mounting data

The cone mounts on the shaft and the cup seats in the housing bore. At 70 mm overall width across a 110 mm bore, this pairing carries a wide roller complement for its envelope.

Quantity and configuration

Unit Quantity: 2 Pcs. One JP11048 cone and one matched JP11019HR cup, supplied together as the assembly.

Interchange guidance

Searchable variants of this designation: JP11048/JP11019HR, JP-11048 / JP-11019-HR, JP11048 JP11019HR, JP-11048 / JP-11019-HR #C, 90CA1.