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Oct . 27, 2025 12:25 Back to list

UCFA211 Take Up Housing Bearing Unit Pillow Block Bearing


UCFA211 Take Up Housing Bearing Unit Pillow Block Bearing

If you spend time around conveyors or belt tensioners, you already know: take-up units are the quiet heroes that keep lines running. The UCFA211 Take Up Housing Bearing Unit Pillow Block Bearing sits in that sweet spot—robust cast-iron housing, pre-lubed insert, and just enough adjustability to tame belt drift. I’ve seen it in quarries and packaging plants alike, and—surprisingly—it’s often the last component anyone worries about until uptime reports come in.

UCFA211 Take Up Housing Bearing Unit Pillow Block Bearing

What it is and why it matters

This unit combines a UC211 radial insert ball bearing—secured with grub screws in the inner ring—with a UCFA take-up housing for easy belt tensioning. Cast iron body, grease nipple, dual-lip seals; simple, tough, serviceable. Many customers say it “just works,” which, to be honest, is the whole point on a production line.

Quick specs (field-proven, real-world values)

ParameterValue (≈ / typical)
Bore (d)55 mm (UC211 insert)
Dynamic load rating C≈ 62 kN (real-world use may vary)
Static load rating Co≈ 39 kN
Housing materialCast iron (HT200/FC200 class)
Inner ring lockingGrub/set screws (often M8 × 2)
SealsNBR dual-lip + shields
GreaseEP2 lithium, -20 to +120 °C typical
Service life window8,000–40,000 h depending on load, speed, lube
OriginNo. 3, Area B, Bearing Industry Mass Entrepreneurship Park, Beihuan Road, Linxi County, Xingtai City, Hebei Province
UCFA211 Take Up Housing Bearing Unit Pillow Block Bearing

How it’s made (short process flow)

  • Materials: Housing cast iron; insert bearing steel GCr15/AISI 52100 (HRC 60–64), NBR seals, carbon steel cage.
  • Methods: Precision casting → CNC machining of slots/bores → heat treatment of rings → grinding to ISO 492 tolerances → seal assembly → greasing → final inspection.
  • Testing: Dimensional checks (ISO 492), life estimation (ISO 281), static load (ISO 76), grease life screening (ASTM D3336 proxy), vibration ZV2/ZV3 targets.
  • Typical in-house test data: runout ≤ 10–15 μm; vibration within ZV2 range at 1,800 rpm; salt spray on coated fasteners ≈ 72 h (ISO 9227).
  • Certifications: ISO 9001:2015; RoHS/REACH conformity upon request.

Where it fits

Conveyor take-up frames, sand & gravel lines, agricultural harvesters, food secondary packaging, and even some HVAC belt drives. One maintenance lead told me their UCFA211 Take Up Housing Bearing Unit Pillow Block Bearing swap cut belt tracking downtime by half—mostly because tensioning was faster and repeatable.

UCFA211 Take Up Housing Bearing Unit Pillow Block Bearing

Vendor comparison (indicative)

Vendor Lead Time MOQ Customization Certs Notes
BTZ Bearing (Hebei) ≈ 7–15 days Flexible Bore seals, grease, logo, packing ISO 9001 Competitive pricing, OEM friendly
Brand A (global) 2–4 weeks Standard Limited ISO 9001, 14001 Broad distribution
Brand B (regional) 1–3 weeks Moderate Some options ISO 9001 Stock-dependent

Customization tips

  • Swap set-screw insert for eccentric-lock if you deal with frequent reversals.
  • Food contact? Ask for H1 grease and stainless slingers; yes, price nudges up.
  • Dusty quarry? Consider triple-lip seals and shorter re-lube intervals.

Mini case notes

Packaging plant (24/6 duty): after switching to UCFA211 Take Up Housing Bearing Unit Pillow Block Bearing with EP2 grease, MTBF moved from ≈ 9 to ≈ 18 months; maintenance cited better sealing and consistent tensioning. Not a lab trial—just shop-floor reality.

Standards and references

  1. ISO 281: Rolling bearings — Dynamic load ratings and rating life.
  2. ISO 492: Rolling bearings — Radial bearings — Tolerances.
  3. SKF General Catalogue, Insert Bearings UC series, load ratings and fits, skf.com.
  4. ASTM D3336: Standard Test Method for Life of Lubricating Greases in Ball Bearings at Elevated Temperatures.
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