H715345/H715311 Bearing H715345/11 Roller Bearing SET420

H715345/H715311 Bearing Datasheet:

H715345/H715311 bearing is made up of two components: the cone and the cup.
Regarding this bearing designation,
Inner Diameter: 71.438mm/ 2 .8125 in
Outer Diameter: 136.525mm/ 5.3750 in
Total Width: 46.038mm/ 1.8125 in
Mass: 3.13kg/ 6.90lb
Cone Number: H715345
Cup Number: H715311
Precision: ABEC1, P0
Structure: single row taper roller bearing
Also Known As: H715345 / H715311, H715345-H715311, H715345/311, H715345/11, H715345/H715311, H715345-99401, SET 420, Set420, SET420-900SA, SET326, 4T-H715345/H715311

Tapered Roller Bearings Available from Us:

Maintenance Tips for H715345/H715311 Bearing:

Pre-installation inspection
Visually check raceways and rollers under good light for nicks, corrosion, stains, brinelling, or burrs.
Pass a clean cotton swab lightly over surfaces—snagging indicates a defect.
Verify bore and shaft/housing fits meet design tolerances (measure with calibrated micrometers / bore gauges).

Shaft & housing preparation
Ensure seating surfaces are round, clean, and free of raised metal (no more than 50% of tolerance consumed by form error).
Surface finish guideline: Ra 0.2–0.8 μm (8–32 μin) typical for seats.
Deburr keyways and threads; cover keyways during mounting to protect rollers.

Mounting (general)
Do not separate H715345/H715311 bearing rollers from cone.
Apply a thin film of clean base oil (not heavy grease) on seating surfaces to ease mounting and prevent fretting.
Press or heat-mount the cone (if interference fit) using an induction heater with temperature control; do not exceed 120 °C (250 °F) unless manufacturer allows higher. Never flame-heat.
Press only on the ring being mounted (avoid transmitting force through rollers).
After cup installation, verify it seats square against shoulder; use feeler gauge—no light leakage.

Replacement guidelines
Replace as a set (cone and cup together) to maintain original geometry.
Do not mix components from different manufacturers or sets unless specified interchangeable.
Always inspect mating parts (shaft/housing) for wear or fretting before reusing.