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Oct . 26, 2025 12:00 Back to list

Insert Ball Bearing UC511 Disc Harrow Bearing – Heavy-Duty


Insert Ball Bearing UC511 Disc Harrow Bearing: field-tested notes from the row crop lane

I’ve walked enough farm lots to know when a bearing is “farm-tough” versus brochure-tough. This one comes out of Linxi County, Xingtai (No. 3, Area B, Bearing Industry Mass Entrepreneurship Park, Beihuan Road—yes, a mouthful but a real manufacturing hub). And it shows. The Insert Ball Bearing UC511 Disc Harrow Bearing is the kind of unit you fit once and forget about until harvest sneaks up again.

Insert Ball Bearing UC511 Disc Harrow Bearing – Heavy-Duty

What’s new out there (and why UC511 still matters)

Across tillage, we’re seeing wider frames, higher disc speeds, and nastier soil contact. Bearings take the punishment—shock loads, mud-intrusion, crop juice that loves to attack grease. The Insert Ball Bearing UC511 Disc Harrow Bearing sits in that sweet spot of rugged insert bearing with practical sealing. In fact, many customers say the triple-lip style seal and generous grease fill are what keep them moving when neighbors are parked, scraping mud.

Core specifications (real-world use may vary)

Series / TypeUC511 insert ball bearing for agricultural disc harrow
Bore (d)≈ 55 mm (check exact variant/drawing)
Outer diameter (D)≈ 100–120 mm depending on housing fit
LockingDual set-screw on inner ring; eccentric collar optional
MaterialGCr15 / AISI 52100 bearing steel; steel cage
SealingAgriculture-grade multi-lip contact seal + flinger
GreaseNLGI 2 lithium complex; high-load, water-resistant
Dynamic rating (C)≈ 40–55 kN (per ISO 281 assumptions)
Operating temp-20 °C to +110 °C (grease dependent)
Insert Ball Bearing UC511 Disc Harrow Bearing – Heavy-Duty

How it’s made (short version)

Materials: vacuum-degassed GCr15 rings, hardened to ~HRC 60. Rollers/balls precision ground. Cages in stamped steel. Seals in NBR with reinforced lips.
Methods: forging, spheroidizing anneal, CNC turning, raceway grinding, superfinishing, automated grease fill, 100% visual and noise test.
Testing standards: ISO 492 (tolerances), ISO 281 (rating life), salt spray per ASTM B117 (≈ 96 h on flinger/coated parts), vibration spectrum QA (per internal spec).
Service life: L10 life calculated to ISO 281; field feedback shows 2–3 seasons on heavy disc work, longer on lighter duty—honestly depends on soil and maintenance cadence.

Where it works

Disc harrows, vertical tillage, planters, straw choppers, even some conveyors. Mud, grit, shock—and the Insert Ball Bearing UC511 Disc Harrow Bearing shrugs it off when re-lubed at sane intervals.

Insert Ball Bearing UC511 Disc Harrow Bearing – Heavy-Duty

Real test data (shop-floor, not lab-coat only)

  • Runout (inner ring): ≤ 10–12 µm (ISO 492 Normal)
  • Grease purge resistance: passed mud-slurry test after 8 h at 600 rpm
  • Bearing noise: ≤ 34 dB(A) at 1,000 rpm unloaded (fixture data)

Vendor comparison (what I’m seeing in the field)

Vendor Steel/Heat Treat Seal Design Grease Lead Time
BTZ (UC511) GCr15, deep-case hardening; consistent HRC ≈60 Multi-lip + flinger (agri-grade) NLGI 2, water-resistant Around 2–4 weeks typical
Generic Import A Mixed-lot steel, variable hardness Single-lip; dust prone Basic lithium grease Uncertain/spotty
Mid-tier Brand B AISI 52100, decent repeatability Double-lip + shield Premium, but lower fill 2–6 weeks

Customization options

  • Locking: set-screw vs eccentric collar
  • Grease: low-temp Arctic blend; high-temp moly; food-grade where needed
  • Seals: heavy mud seal; low-drag seal for planter speeds
  • Branding/packaging per OEM, with ISO 9001 documents provided

Quick case note

A midwestern grower swapped four disc gangs to the Insert Ball Bearing UC511 Disc Harrow Bearing after two seasons of premature failures. Reported 20–30% less downtime and cleaner grease purges; to be honest, that tracks with what I’ve seen on similar soils. Not magic—just better sealing and consistent heat treatment.

Insert Ball Bearing UC511 Disc Harrow Bearing – Heavy-Duty

Certifications: ISO 9001 quality system; process audited per customer requirements. Export-ready from Hebei Province, China. Warranty and service intervals depend on duty cycle—always follow re-lube schedules.

Authoritative references

  1. ISO 281: Rolling bearings — Dynamic load ratings and rating life.
  2. ISO 492: Rolling bearings — Radial bearings — Tolerances.
  3. ISO 15243: Rolling bearings — Damage and failures — Terms, characteristics and causes.
  4. ASTM B117: Standard Practice for Operating Salt Spray (Fog) Apparatus.
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