UCP201-12MM Pillow Block Bearing | 12mm Bore | Cast Iron Housing | UC201-12MM Insert | Cr≈2,882 lbf (~12.8 kN) / Cor≈1,495 lbf (~6.65 kN) | Max Speed 8,800 RPM | Self-Aligning | Two Set Screws

The UCP201-12MM is a two-bolt pillow block bearing unit from the UCP200 series, combining a cast iron pillow block housing with a UC201-12MM chrome steel insert bearing. The UCP201-12MM holds a unique position in the UCP200 family — it accepts a 12mm metric shaft diameter, making it the smallest bore unit in the entire UCP200 series, which spans from 12mm (UCP201) all the way up to 75mm. At the same time, it achieves the highest maximum speed of 8,800 RPM in the entire series — a direct result of its small bore and lightweight rotating mass.

The unit features:

• Cast iron housing with anti-rotation device and standard base-to-center height

• UC201-12MM insert bearing — self-aligning, wide inner ring, AISI 52100 / GCr15 chrome steel, slinger seal

• Two set screws positioned in the inner ring for positive shaft locking

• Standard grease fitting for convenient in-service re-lubrication

• Ultra-compact low-profile footprint — center height only 30.2mm (1-3/16"), overall height 57mm, insert width 62mm

• 8,800 RPM max speed — highest in the entire UCP200 series

Product Specifications

Note on UCP201 Series Position: The UCP201 series holds a unique position in the UCP200 family — it covers the smallest bore sizes starting from 12mm, which is the absolute minimum bore in the entire UCP200 series. The UCP201 series does not follow the standard ×5 bore derivation rule (UCP204=20mm, UCP205=25mm, etc.) and instead covers non-standard small metric and fractional inch bores. The 12mm bore UCP201-12MM is the smallest and highest-speed unit in the entire UCP200 family.

Cross Reference / Interchange

⚠️Note: The NEXANS official page for UCP201-12MM does not list a full interchange table — consistent with the UCP201 series being a small metric bore with fewer North American brand equivalents. The following cross-references are based on industry-standard UCP201-12MM equivalents.

UCP201-12MM vs UCP200 Series — Speed & Size Progression

Key Insight: As bore size increases across the UCP200 series, max speed decreases while load capacity increases. The UCP201-12MM sits at the extreme high-speed / low-load end of the spectrum — 8,800 RPM max speed with 12mm bore — making it the ideal choice for high-speed, ultra-light-duty 12mm shaft applications.

Key Features & Engineering Advantages

• ✅ Smallest Bore in Entire UCP200 Series — 12mm — The UCP201-12MM is the entry point of the UCP200 family, covering the smallest standard metric shaft size (12mm) available in the pillow block bearing format

• ✅ 8,800 RPM Max Speed — Highest in Entire UCP200 Series — Tied with UCP202-10 and UCP202-15MM; significantly higher than UCP203-17MM (~7,450 RPM), UCP204 (6,500–7,450 RPM), UCP205 (~5,850 RPM), and UCP206 (~5,300 RPM); ideal for high-speed small-shaft applications

• ✅ Dynamic Load 2,882 lbf / Static Load 1,495 lbf — Multi-Source Confirmed — Load ratings independently verified by BearingsDirect (UCP201-12MM)

• ✅ Ultra-Compact Low-Profile Housing — Center height only 30.2mm (1-3/16"), overall height 57mm, insert width 62mm — the most compact housing in the UCP200 series

• ✅ Self-Aligning Design — Accommodates shaft misalignment up to ±2°, reducing installation stress and extending service life in real-world mounting conditions

• ✅ Cast Iron Housing with Anti-Rotation Device — Prevents insert bearing from rotating within the housing under shock loads or vibration

• ✅ Two Set Screw Locking — Dual set screws in the wide inner ring provide positive, reliable shaft attachment without requiring keyways

• ✅ Slinger Seal — Effective contamination exclusion for dusty, wet, or moderately contaminated environments including agriculture, conveyor, and HVAC

• ✅ AISI 52100 / GCr15 Chrome Steel Insert — Industry-standard bearing steel for maximum fatigue life and consistent hardness

• ✅ Standard Grease Fitting — Enables in-service re-lubrication for extended maintenance intervals without disassembly

• ✅ SKF SY 12 TF Compatible — NEXANS UCP201-12MM is a factory-direct, cost-effective alternative with identical dimensions and compatible load ratings

• ✅ 3,000m² Warehouse — Large Ready Stock — Fast delivery for urgent maintenance and production line requirements

Typical Applications

FAQ

Q1: Why is UCP201-12MM the highest-speed unit in the UCP200 series?

The 8,800 RPM maximum speed results directly from the smallest bore (12mm) in the series. Smaller bore = smaller ball complement diameter = lower centrifugal forces on rolling elements = higher achievable speed. As bore increases across the UCP200 series, max speed progressively decreases (UCP205=5,850 RPM, UCP206=5,300 RPM, etc.).

Q2: What is the bore size of UCP201-12MM and what machinery uses 12mm shafts?

The UCP201-12MM bore is exactly 12mm — the smallest standard bore in the UCP200 series. It is widely used in European and Asian light industrial machinery, small fans, blowers, miniature conveyors, and small agricultural equipment with 12mm metric shafts.

Q3: Does UCP201-12MM have a full interchange list like UCP202-10 or UCP204-12?

The NEXANS official page does not list a full interchange table for UCP201-12MM — consistent with the UCP201 series being a less common small metric bore with fewer North American brand equivalents. Key confirmed equivalents include BearingsDirect UCP201-12MM and SKF SY 12 TF.

Q4: How does UCP201-12MM compare to UCP202-10 (5/8") in terms of housing?

Both share identical housing dimensions (h=30.2mm, a=127mm, e=95.3mm, w=62mm) and identical load/speed ratings (Cr=2,882 lbf, Cor=1,495 lbf, 8,800 RPM). The only difference is bore: UCP201-12MM = 12mm, UCP202-10 = 5/8" (15.875mm). These are NOT interchangeable — always measure shaft diameter precisely.

Q5: Can the UC201-12MM insert be replaced separately?

✅ Yes. The UC201-12MM insert bearing can be replaced independently without replacing the cast iron housing, significantly reducing maintenance costs. NEXANS Bearing supplies both complete UCP201-12MM units and UC201-12MM insert bearings separately.

Q6: Is OEM/private label available?

✅ Yes. NEXANS Bearing provides full OEM and private label services — custom branding, packaging, and documentation. Flexible MOQ for distributors and maintenance contractors.

Get a Quote Now

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

NEXANS Bearing — Factory-direct partner for pillow block bearings and industrial bearing solutions since 1997.