Tapered Bearing Cone and Cup Set

Matched cup and cone for HM218248/HM218210 hubs

NTN sells this listing as a tapered bearing cone and cup set carrying the 4T-HM218248/HM218210 pairing stamped on the components. Matched sets exist so inner and outer raceways share the same manufacturing batch tolerances, which matters when hubs specify both numbers together on the axle chart.

Shops order sets when both components show wear, when a cone shattered and damaged the cup, or when fleet policy forbids mixing unknown remaining life on a paired race. The set ships at 5.2 lb published weight, heavier than a cone-only carton because both pieces ride together.

Price is $92.00 USD before tax. Plan hub service as a half-day job per side when drums, ABS rings, and seal choices enter the story.

Assembly sequence on the spindle

Install cups into the hub bore with the correct driver; install cones on the spindle with clean grease compatible with the seal lip. Set end play using the axle maker procedure for nut type and hub generation—indicator readings beat guesswork on adjust-nut systems.

Compare embossing on removed pieces to the set label before you press the first race. A hub calling for HM218248/HM218210 is unforgiving about substituting a close number from a cross catalog.

• Replace inner and outer seals when grease color shows water intrusion.
• Inspect brake drum pilot surfaces when wobble appeared before failure.
• Route ABS harnesses clear of rotating hubs after reassembly.
• Record left and right side stamp pairs on the work order.

Freightliner, Peterbilt, Volvo wheel ends

Published fitment names Freightliner, Peterbilt, and Volvo wheel-end applications in the table on this card. Axle OEM and hub casting still decide whether this set belongs on a given spindle.

Verify with removed stamps, hub numbers, and VIN axle data. We describe where fleets commonly run this pairing; we do not promise a match without your measurements.

Email hub photos to support@aonetruckauto.com when stamps are peened or rusted unreadable. Cross-check alternatives on the fitment guide before overnighting parts to a breakdown lane.

Set versus cone-only economics

A cone-only repair saves dollars when the cup passes visual and feel inspection under light. A set saves the second tow when a reused cup spalls after two weeks. Fleet maintenance managers weigh that risk against downtime on long-haul units.

Shelf identification for this matched set is SKU NTN-SET-HD; the manufacturer pairing printed on the box aligns with 4T-HM218248/HM218210 nomenclature used in vendor catalogs.

Receiving and bench prep

Compare inner and outer labels to the pick ticket at receiving. Mix-ups between set cartons create expensive misinstalls discovered only at preload measurement.

Store sets flat in a clean cabinet; nicked raceways belong on a quarantine shelf, not on a customer unit.

Policy before checkout

When matched sets beat piecemeal races

Cup spalling often follows a cone failure that overheated the outer race. Visual inspection under bright light reveals blue temper colors you cannot feel with a fingernail alone.

Some hubs use spacers or snap rings that set preload once and discard on disassembly. Lay out hardware on a clean tray photographed before removal so reassembly does not swap left-right spacers.

Volvo and Peterbilt lanes in your yard may share axle families while Freightliner units run a different hub vendor. The set pairing is about numbers on the races, not paint on the door.

Environmental and shop controls

Do not wash hubs with high-pressure spray directly into open bearings waiting for install. Water in a cavity shows up as emulsion weeks later on a long haul.

Use lint-free wipes on spindles; shop air blow-down is convenient but embeds grit in grease threads.

Cost of downtime versus set price

At $92.00 for the matched set, compare that to a second road call when a reused cup fails. Maintenance managers track cost per mile; hub failures spike that metric instantly.

Receiving should verify both components share the same label batch. Mixed cartons from pick errors waste a morning before the truck rolls.

Left-right hub symmetry

Some fleets require matching brands left and right even when only one side failed. Sets simplify that policy because both sides carry the same batch markings.

When only one hub shows water intrusion, inspect the opposite side seal on the same tractor during the same PM window. Sympathetic wear appears within months if the root cause was hub cap vent blockage.

Road test at highway speed listening for tone changes when ABS activates. Intermittent tone faults after bearing work often mean exciter gap moved during reassembly.

Documentation for auditors

Maintenance auditors ask for torque records and parts stamps on wheel-end jobs. Keep the NTN box label in the job folder until the invoice clears accounting.

Post-install sign-off

Match left and right hub end play readings when your procedure calls for symmetry. Asymmetric preload can push pull on a steer axle enough that drivers feel wander without obvious play in the steering box.

Keep the box label with batch codes until the job passes its road test. If a supplier review occurs, those codes tie the physical set to the carton you received from this order.

Before you pay, skim the shipping policy and returns and refunds. Parts questions go to support@aonetruckauto.com.

Operator: HEAVY TRUCK PARTS, INC. We are not affiliated with the truck or filter brands named on this page.