UCP212-39 Pillow Block Bearing 2-7/16" (61.9mm) Bore | Cast Iron Housing | Cr≈47.7kN | Cor≈33.4kN | 2800rpm | Self-Aligning | Double Sealed | Set Screw Locking

The UCP212-39 is a standard duty Cast Iron Pillow Block Bearing Unit from the UCP200 series, designed for a 2-7/16 inch (61.9mm) bore shaft — the "-39" suffix encoding the inch bore: 39/16 = 2.4375 inches (2-7/16"). It combines a robust cast iron housing with an anti-rotation device, self-alignment capability (typically ±2–3°), and a UC212-39 chrome steel insert bearing (AISI 52100 / GCr15) featuring a slinger double-seal design and two set screw shaft locking mechanism.

With a dynamic load rating of Cr ≈ 47.7 kN (10,718 lbf), static load rating of Cor ≈ 33.4 kN (7,515 lbf), and limiting speed of 2,800 r/min — all confirmed by SGTR Bearing, and cross-validated against the same-housing UCP212-60MM data from Maedler North America (Cr=47.8kN, Cor=33.0kN) with near-identical values — the UCP212-39 delivers reliable radial load capacity for 2-7/16 inch shaft applications across North American agricultural, industrial, and conveyor machinery. At ≈4.90 kg (10.8 lbs), it is notably lighter than the UCP213/UCP214 series, making it ideal for weight-sensitive or space-constrained installations.

The standard grease fitting (Zerk fitting) allows for in-service relubrication without disassembly, extending service life in demanding environments. The cast iron housing provides excellent rigidity and vibration damping, while the self-aligning insert bearing design compensates for shaft misalignment caused by thermal expansion, structural deflection, or imperfect installation.

Product Specifications

Key Features & Engineering Advantages

• ✅ 2-7/16" (61.9mm) Bore — Standard North American Fractional Shaft Size — The 2-7/16" bore is a widely used fractional inch shaft size in North American agricultural, conveyor, and industrial machinery; the "-39" suffix encodes the inch bore: 39/16 = 2.4375 inches (2-7/16")

• ✅ Cr≈47.7kN / Cor≈33.4kN — Multi-Source Cross-Validated — Load capacity confirmed by SGTR Bearing (10,718 lbf / 7,515 lbf), and independently cross-validated against the same-housing UCP212-60MM data from Maedler North America (Cr=47.8kN / Cor=33.0kN) — near-identical values providing high data confidence

• ✅ 2,800 r/min Limiting Speed — The highest limiting speed in the UCP212–UCP215 range, confirmed by SGTR Bearing; reflecting the smaller bore and lighter rotating mass — ideal for moderate-to-higher-speed 2-7/16" shaft applications

• ✅ Lightweight ≈4.90 kg (10.8 lbs) — Confirmed by SGTR Bearing; significantly lighter than UCP213 (≈6.5kg) and UCP214 (≈6.5–7.3kg) series, making UCP212-39 the preferred choice for weight-sensitive or space-constrained installations

• ✅ Identical Housing to UCP212-60MM — The UCP212-39 shares the exact same UCP212 housing (241×69.6×138.1mm, h=69.8mm, M16 bolts) as the UCP212-60MM, differing only in insert bearing bore (61.9mm inch vs 60mm metric) — enabling easy housing stock consolidation for distributors serving both inch and metric shaft markets

• ✅ M16/5/8" Bolt Size — One size smaller than UCP213/UCP214 (M20/3/4"), consistent with the lighter UCP212 housing design; important for installation planning and bolt stock management

• ✅ Cast Iron Housing with Anti-Rotation Device — Robust cast iron housing provides excellent vibration damping and structural integrity; anti-rotation pin prevents insert bearing rotation within housing under shock loads

• ✅ Self-Aligning Design (±2–3°) — Compensates for shaft misalignment, reducing bearing stress and extending service life in imperfectly aligned shaft installations

• ✅ Double Sealed + Slinger Seal — Triple-layer sealing system provides superior protection against dust, dirt, moisture, and contaminants in harsh outdoor and industrial environments

• ✅ Two Set Screw Locking — Dual set screws in the wide inner ring provide positive shaft locking and prevent axial displacement under heavy loads and vibration

• ✅ Standard Grease Fitting (Zerk) — Allows convenient in-service relubrication without disassembly, critical for extended maintenance intervals in remote or hard-to-access installations

• ✅ Wide Inner Ring (Bi=65.1mm / 2.563 in) — Extended inner ring width provides greater shaft contact area, improving set screw grip and reducing shaft fretting

• ✅ Wide Interchange List (10+ Brands) — Directly interchangeable with SKF UCP212-39, FYH UCP212-39, DODGE P2B-SC-207, LINK-BELT P3-U239N, AMI/ASAHI UCP212-39, PEER UCP212-39, NTN UCP212-207D1, BROWNING VPS-239, FARNIR YAS 2-7/16, and Seal Master NP-39

• ✅ AISI 52100 / GCr15 Chrome Steel Insert — Premium chrome steel insert bearing with HRC 60–64 hardness for exceptional wear resistance and fatigue life

Typical Applications

Based on the UCP212-39's 2-7/16" bore, Cr≈47.7kN, 2,800rpm limiting speed, double-sealed cast iron housing, self-aligning design, and lightweight ≈4.90kg:

Cross Reference / Interchange

UCP212-39 vs UCP212-60MM vs UCP213-40 — Key Differences

⚠️ Critical Selection Note: The UCP212-39 (61.9mm) and UCP212-60MM (60mm) share the exact same UCP212 housing and bolt pattern, but their insert bearings have different bore sizes (61.9mm vs 60mm — a difference of 1.9mm). These are NOT shaft-interchangeable — always specify "-39" for 2-7/16" inch shafts and "-60MM" for 60mm metric shafts. Stepping up to UCP213-40 for 2-1/2" shafts means a larger housing (265mm vs 241mm length), heavier weight (~6.5kg vs ~4.90kg), lower max speed (2,350 vs 2,800 rpm), and larger M20 bolts.

Series Context — UCP212-39 within the UCP200 Pillow Block Series

Key Series Insights:The "-39" suffix encodes the inch bore: 39/16 = 2.4375 inches (2-7/16") — a standard North American fractional shaft size widely used in agricultural and industrial machinery  The UCP212-39 shares its exact UCP212 housing with UCP212-38 and UCP212-60MM, making it easy to stock one housing type while offering multiple bore insert bearings for different shaft standards   Cr≈47.7kN confirmed by SGTR Bearing and cross-validated against same-housing UCP212-60MM data (Maedler: 47.8kN) — near-identical values (difference < 0.2%) providing the highest cross-validation confidence in this series  The 2,800 r/min limiting speed is the highest in the UCP212–UCP215 range, confirmed by SGTR Bearing — making UCP212-39 the best choice when shaft speed exceeds 2,350–2,450 rpm  The M16/5/8" bolt size and ≈4.90kg weight are key distinguishing features from UCP213 and above (M20/3/4", ~6.5kg+), important for installation planning and weight management   FYH Japan (fyh.co.jp) lists UCP212-39 as a standard catalog item, confirming global availability and standardization across Asian and North American markets  

Export & Logistics Notes for UCP212-39

• Standard Export Packaging — Individual box + outer carton or custom packaging per customer requirements; ≈4.90kg units individually wrapped for protection

• Fast Delivery — Standard orders: 3–7 days from stock; DHL/FedEx/UPS express available (VIP member rates ~15% savings)

• Global Shipping — LCL/FCL ocean freight, air freight, express courier — all options available

• Full Export Documentation — Certificate of Origin (CO), material certificates, quality inspection reports, packing lists

• OEM / Private Label — Custom branding & packaging available for distributors and OEM customers

• Technical Support — 24-hour online technical support for installation, lubrication, and application engineering

• Global Network — Offices/agents in 30+ countries and regions

Why Choose NEXANS Bearing for UCP212-39?

Since 1997, Liaocheng Nexans Bearing Co., Ltd has been a trusted factory-direct manufacturer and global supplier of pillow block bearings and housed bearing units across agricultural, industrial, construction, and conveyor sectors.

• Factory-Direct Pricing — No middlemen, competitive wholesale rates

• Large Ready Stock — 20,000+ bearing models in inventory, including full UCP200 series in both inch and metric bore variants

• Flexible MOQ — Single-unit replacement orders to bulk OEM contracts

• OEM / Private Label — Custom branding & packaging available

• Full Export Documentation — CO, quality certificates, professional export packaging

• Global Network — Offices/agents in 30+ countries and regions

• 24/7 Technical Support — Expert application engineering support for shaft fit, bore selection (inch vs metric), lubrication, and mounting recommendations

Get a Quote Now

Email: export@nksbearing.com WhatsApp: +86-15562839480 Website: www.nksbearing.com

NEXANS Bearing — Your trusted factory-direct partner for pillow block bearings and housed bearing units since 1997.