NSKHR32206JFP5Flanged Cup Single-Row Tapered Roller Bearing Cone and Cup Set, 30mm x 62mm x 21.25mm, High-Capacity Roller Complement, ISO Class 5 Precision

Product Description

What this part is

A single-row metric tapered roller bearing in the 32206 envelope — 30 mm bore, 62 mm outside diameter, 21.25 mm overall assembled width — built to NSK’s uprated HR high-capacity design and supplied with a flanged outer ring. A tapered roller bearing carries heavy radial load together with thrust in one direction, and is normally mounted opposed against a second bearing so the pair locates the shaft in both directions.

What is included

This is described and catalogued as a set, meaning the cone (inner ring, roller complement and cage) together with its matched flanged cup (outer ring). Tapered roller bearings are separable, so a cone and a cup can be sold individually — that is not the case here. Confirm both halves are physically in the carton before dispatch.

Decoding the designation

HR – NSK’s high-capacity roller series. Larger and more numerous rollers than the base 32206 within the same boundary dimensions, so higher dynamic and static capacity from the same envelope.
32206 – ISO 355 metric single-row tapered series, 30 mm bore.
J – conforms to the ISO specification for cup back-face raceway diameter, cup width and contact angle. This is a boundary and geometry conformance mark, not a cage code.
F – flanged outer ring. NSK normally carries this as a prefix rather than mid-designation, so the exact placement on this carton is worth noting, but the flange itself is visible on the part.
P5 – ISO tolerance class 5, tighter than the standard class on bore, outside diameter, width and running accuracy.

What these specs mean in practice

The flange is the reason to specify this part rather than a plain 32206. A flanged cup locates axially against the housing face, so the housing can be a simple through bore with no internal shoulder to machine and no end cap or circlip to retain the outer ring. That removes a machining operation, removes a stack-up tolerance, and makes assembly and future replacement quicker. The trade-off is that the flange fixes the axial position of the cup, so shimming for preload has to be taken up on the cone side or through the opposed bearing.

Class 5 precision buys reduced radial and axial runout and tighter bore and outside diameter tolerance. On a spindle, a gearbox pinion or anything where a shaft must run true, that translates directly into lower vibration and better tooth or tool position. It also means the mating shaft and housing must be machined to a matching accuracy, or the precision is wasted.

Published ratings and mounting data

Bore d: 30 mm
Outside diameter D: 62 mm
Overall assembled width T: 21.25 mm
Cone width B: 20 mm
Cup width C: 17 mm
Rows: 1
Precision: ISO class 5 (P5)
Closure: open

Distributor listings for the base HR32206J designation publish a dynamic capacity of approximately 5300 kgf (about 52 kN) and a static capacity of approximately 6150 kgf (about 60 kN), with a limiting speed in the region of 6000 rpm grease and 8500 rpm oil. Treat those as provisional distributor figures for the base designation. NSK does not publish separate ratings for the flanged, class 5 variant, and load capacity is a function of the roller complement rather than the flange or the tolerance class, so the base figures are indicative rather than certified for this exact part number. No rating is claimed here that NSK publishes against HR32206JFP5 specifically.

Fitting notes

Mount opposed to a second tapered bearing and set clearance or preload on assembly — a tapered roller bearing has no internal clearance until it is mounted. Press on the cone bore only; never drive load through the rollers. Because the cup flange sets its own axial datum, check the resulting stack before adjusting. Class 5 parts deserve clean assembly conditions and a proper mounting tool rather than a hammer and drift.

Interchange guidance

The 32206 boundary is an ISO standard, so plain 32206 parts from other makers share the 30 x 62 x 21.25 envelope. They will not share the flanged cup, the HR roller complement or the class 5 tolerance, and substituting one loses whichever of those the original design relied on. If the housing has no shoulder, the flange is not optional.