Tapered Roller Bearings category illustration

Engineering reference only. Category illustration; verify the offered drawing, source designation and quotation before ordering.

Tapered Roller Bearings · 30200 reference

30203 Tapered Roller Bearing

Keep the complete cone/cup designation and assembly dimensions together. T is total bearing width; B and C describe individual ring widths and must not be substituted for T. Review the mating arrangement and setting.

d 17 mm · D 40 mm · T 13.25 mm

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Structure and designation

What this reference describes

T is total bearing width; B and C are independently sourced inner-ring and outer-ring widths. Do not use either ring width as T.

Family-specific dimensions

30203 bearing dimensions

T is total bearing width; B and C are independently sourced inner-ring and outer-ring widths. Do not use either ring width as T. Values are source-published millimetre references unless identified as a structural field.

dBore diameter17 mm

DOutside diameter40 mm

TTotal bearing width13.25 mm

BInner ring width12 mm

COuter ring width11 mm

Model	d — Bore diameter	D — Outside diameter	T — Total bearing width	B — Inner ring width	C — Outer ring width
30203	17 mm	40 mm	13.25 mm	12 mm	11 mm

Model-specific review

Interpret this model's dimensions

Keep three different width measurements in view: assembled total width, inner-ring width and outer-ring width. This metric 30200 reference retains the JR source designation separately from the generic 30203 designation.

Specification boundary

Confirm the offered configuration

These values describe the cited engineering reference. They do not verify LTO-specific load ratings, speed limits, material, precision, clearance, seals, application suitability or interchangeability. Provide the complete designation, quantity, drawing and operating conditions for quotation review.

Source transparency

Technical reference and provenance

Reference publisher JTEKT; designation 30203JR. Source checked 2026-09-21. Reference data alone do not establish the exact supplied configuration.

Model	30203
Bearing family	Tapered Roller Bearings
Dimension schema	tapered_roller_bearing
Source document	JTEKT 30203JR official product data
Reference designation	30203JR
Supply review	Sourcing, production coordination and quotation support; actual configuration confirmed per offer.

DIMENSION SOURCEJTEKT — JTEKT 30203JR official product dataEngineering reference only. This source identifies data, not LTO manufacturing status or brand authorization.

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Sourcing and quotation

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