UCP210-50MM Pillow Block Bearing 50mm Bore | Cast Iron Housing | Cr≈35.1kN | Cor≈23.7kN | 3400rpm | Self-Aligning | Double Sealed | Set Screw Locking

The UCP210-50MM is a standard duty Cast Iron Pillow Block Bearing Unit from the UCP200 series, designed for a 50mm metric bore shaft — the "-50MM" suffix explicitly denoting the metric bore size to distinguish it from inch-bore variants. It is the metric counterpart to the UCP211-32 (2"/50.8mm) and represents the largest bore in the UCP210 metric series. It combines a robust cast iron housing with ribbed base design, anti-rotation device, self-alignment capability (typically ±2–3°), and a UC210-50MM 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 ≈ 35.0–35.1 kN (7,866–7,890 lbf) confirmed independently by Koyo/JTEKT (35.1kN) and Bearings Direct (7,866 lbf / ≈35.0kN) — a difference of < 0.3% — and static load rating of Cor ≈ 23.7 kN (5,328 lbf), the UCP210-50MM provides reliable radial load capacity for 50mm metric shaft applications. The limiting speed of 3,400 r/min confirmed by Bearings Direct is notably higher than the UCP211 series (3,000–3,100 rpm), making the UCP210-50MM the preferred choice for higher-speed 50mm shaft applications.

At ≈2.6–2.77 kg (5.73–6.10 lbs) confirmed by SKF (2.77kg) and USA Roller Chain (2.6kg), the UCP210-50MM is lighter and more compact than the UCP211-32 (3.54–3.82kg) despite serving a nearly identical bore size — the UCP210 housing (206mm length) is shorter than the UCP211 housing (219mm length). The grease fitting uses a 1/4-28 UNF thread (confirmed by Koyo), different from the 1/8-27 NPT used on the UCP211-32.

⚠️ Critical: UCP210-50MM vs UCP211-32 — NOT Interchangeable

This is the most common selection error for 50mm / 2" shaft applications. Despite the near-identical bore sizes, these two units are completely different products:

✅ Rule of thumb: If your shaft is 50mm metric → use UCP210-50MM. If your shaft is 2" inch (50.8mm) → use UCP211-32. The 0.8mm bore difference means a UCP211-32 will be loose on a 50mm shaft, causing fretting and shaft damage.

Product Specifications

Key Features & Engineering Advantages

• ✅ 50mm Metric Bore — Standard ISO/DIN Shaft Size — The 50mm bore is a universally standard metric shaft size per ISO/DIN, used across European, Asian, and global industrial machinery; the "-50MM" suffix explicitly identifies the metric bore to prevent confusion with the UCP211-32 (2"/50.8mm inch bore)

• ✅ Cr≈35.1kN — Dual-Source < 0.3% Agreement — Koyo/JTEKT (35.1kN) and Bearings Direct (7,866 lbf / ≈35.0kN) differ by < 0.3% — the tightest cross-source agreement in the UCP210 series, providing the highest data confidence

• ✅ 3,400 r/min — Highest Limiting Speed in the UCP210–UCP215 Range — The UCP210-50MM's 3,400 rpm exceeds UCP211 (3,000–3,100 rpm), UCP212 (2,800 rpm), UCP213 (2,350 rpm), UCP214 (2,450 rpm), and UCP215 (2,300 rpm) — making it the best choice when shaft speed is the primary design constraint for 50mm shaft applications

• ✅ Lighter & More Compact than UCP211-32 — At ≈2.6–2.77 kg and 206mm length, the UCP210-50MM is significantly lighter (≈30% less) and shorter (13mm shorter) than the UCP211-32 (3.54–3.82kg, 219mm) — ideal for weight-sensitive or space-constrained installations

• ✅ 1/4-28 UNF Grease Fitting — Confirmed by Koyo; the 1/4-28 UNF thread is the standard metric-series grease fitting thread, different from the 1/8-27 NPT used on UCP211 inch-series units — important for maintenance tooling compatibility

• ✅ M12 Bolt Size — Smaller than the M16 used on UCP211 series, reflecting the more compact UCP210 housing — reduces installation hardware costs for 50mm metric shaft applications

• ✅ Wide Interchange List — 10+ Brands — Directly interchangeable with SKF UCP 210, Koyo UCP210, PEER UCP210, BROWNING VPS-210, AMI/ASAHI UCP210, NTN UCP210D1, IPTCI UCP210, SEAL MASTER NP-50MM, DODGE P2B-SC-50MM, LINK-BELT P3-U210N, and FARNIR YAS 50MM

• ✅ 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 (Both Sides) — Triple-layer sealing system provides superior protection against dust, dirt, moisture, and contaminants in harsh outdoor and industrial environments

• ✅ 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

Cross Reference / Interchange

Series Context — UCP210-50MM within the UCP200 Pillow Block Series

Key Series Insights:The UCP210-50MM uses a smaller UCP210 housing (206mm) vs the UCP211 housing (219mm) — NOT housing-compatible with UCP211 series despite nearly identical bore sizes   Higher speed, lower load — The UCP210-50MM trades load capacity (Cr≈35.1kN vs UCP211-32's ≈43.4kN) for higher limiting speed (3,400 vs 3,000–3,100 rpm) and lighter weight — ideal for high-speed, moderate-load 50mm applications   M12 vs M16 bolt — The UCP210 series uses M12 mounting bolts vs M16 for UCP211 — verify existing bolt hole sizes before substituting one series for the other   1/4-28 UNF vs 1/8-27 NPT grease fitting — Maintenance tooling must match; confirm grease gun fitting compatibility before installation

Export & Logistics Notes

• Standard Export Packaging — Individual box + outer carton or custom packaging; ≈2.6–2.77kg units individually wrapped for protection

• Fast Delivery — Standard orders: 3–7 days from stock; DHL/FedEx/UPS express available

• 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

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

Why Choose NEXANS Bearing for UCP210-50MM?

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.

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

• Large Ready Stock — 20,000+ bearing models in inventory, 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

• 24/7 Technical Support — Expert application engineering support including bore selection (50mm metric vs 2" inch), grease fitting compatibility, 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.