TimkenJP14049P/JP14019HRTapered Roller Bearing Assembly – 140 mm Bore, 195 mm Cup Outer Diameter, 27 mm Cone Width, 21 mm Cup Width, 29 mm Assembly Width, Steel Cage

Product Description

What this part is

A Timken JP14049P/JP14019HR single-row tapered roller bearing assembly, supplied as a matched cone and cup under Timken assembly designation 90C03. The JP14049P cone is the inner ring with its roller and cage set; the JP14019HR cup is the outer race. Bore is 140 mm and cup outside diameter is 195 mm, which is 5.5118 in on 7.6772 in. This is a metric JP-series bearing, dimensioned to the metric scheme throughout.

Decoding the designation

JP is Timken’s metric tapered roller series. The 14 in JP14049 and JP14019 is the bore step, giving the 140 mm shaft seat, while 049 identifies the cone and 019 the cup. The trailing 90C03 is Timken’s assembly number for the cone-and-cup pair as furnished together, which is what distinguishes a matched assembly from two separately boxed components.

What these specs mean in practice

The JP range is a light metric section, so the outside diameter and width stay small relative to the bore — 195 mm on a 140 mm shaft, with a 27 mm cone width. That buys a compact envelope where housing space is tight, at the cost of the load capacity a heavier section would give on the same shaft.

Tapered roller geometry angles the roller axis to the bearing axis, so radial and axial load share one raceway contact and the bearing takes heavy combined loading in a single direction. Two assemblies opposed on the same shaft locate it axially in both directions and can be set to a defined clearance or preload at assembly.

Quantity and configuration

One complete assembly — one JP14049P cone and one JP14019HR cup. Cone width is 27 mm, cup width 21 mm and assembly width 29 mm. Steel cage, through-hardened bearing steel rings and rollers.

Mounting geometry

Cone backing shoulder diameter is 149 mm and cup backing shoulder diameter 153 mm; these are the abutment diameters a shaft shoulder, housing shoulder or spacer face must respect so that clamping load bears on the ring and not on the roller path. Effective centre location is 12.2 mm, which is the point to work from when calculating induced radial load across an opposed pair.

Interchange guidance

The cone and cup are matched within the JP14049 / JP14019 pairing and the raceway angle is common to that pair. Sibling JP-series numbers cover other bore steps: JP11049/JP11019 is the 110 mm bore assembly and JP12049/JP12010 the 120 mm, both related sizes rather than substitutes. JP14049/JP14010 shares the same cone on a different cup number, and JP14049/JP14010-B is the TSF flanged-cup variant of the same cone.