UCP203-17MM Pillow Block Bearing | 17mm Bore | Cast Iron Housing | UC203-17MM Insert | Cr≈9.9 kN / Cor≈6.0 kN | Self-Aligning | Two Set Screws | Slinger Seal | Grease Fitting

The UCP203-17MM is a two-bolt pillow block bearing unit from the UCP200 series, combining a cast iron pillow block housing with a UC203-17MM chrome steel insert bearing. Designed for standard-duty industrial applications, the UCP203-17MM accepts a 17mm metric shaft diameter and represents the compact end of the UCP200 series — featuring the smallest standard UCP203 housing with a lower center height of just 30.2mm.

The unit features:

• Cast iron (grey cast iron) housing with anti-rotation device and standard base-to-center height

• UC203-17MM insert bearing — self-aligning, wide inner ring, AISI 52100 / GCr15 chrome steel, slinger seal + lip seal

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

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

• Ultra-compact footprint — center height only 30.2mm, the lowest in the UCP200 series

Product Specifications

Note on UCP203 Series Bore Sizes: The UCP203 series is unique within the UCP200 family — it covers non-standard small metric bores of 12mm, 15mm, and 17mm, which fall between the UCP202 (15mm max) and UCP204 (20mm min metric) series. The 17mm bore is the largest in the UCP203 series.

Cross Reference / Interchange

⚠️Important Note: The NEXANS official page for UCP203-17MM does not list a full interchange table — this is consistent with the UCP203 series being a less-common metric bore size with fewer direct brand equivalents. The following cross-references are based on industry-standard UCP203-17MM equivalents from independent sources.

UCP203-17MM vs Adjacent Bore Sizes — Key Comparison

UCP203-17MM vs UCP204-20MM: Both share the same overall length (127mm) and bolt spacing (95.3mm), but the UCP204-20MM has a higher center height (33.3mm vs 30.2mm), wider insert (65mm vs 62mm), and higher load capacity (12.8 kN vs 9.9 kN). The UCP203-17MM is the right choice for 17mm shafts in low-profile, light-duty applications.

Key Features & Engineering Advantages

• ✅ Cr=9.9 kN / Cor=6.0 kN — Multi-Source Confirmed — Load ratings independently verified by Maedler North America (grey cast iron / roller bearing steel insert)

• ✅ 17mm Bore — Largest in UCP203 Series — Covers the non-standard small metric bore range (12mm, 15mm, 17mm) unique to the UCP203 series; ideal for metric machinery with 17mm shafts

• ✅ Ultra-Compact Low-Profile Housing — Center height only 30.2mm (1-3/16") — the lowest in the UCP200 series; ideal for space-constrained and low-clearance installations

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

• ✅ Grey 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 + Lip Seal — Multi-layer contamination exclusion for dusty, wet, or moderately contaminated environments

• ✅ 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

• ✅ Normal Duty Steel Cage Insert — Steel cage construction for reliable performance in standard industrial environments

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

Typical Applications

FAQ

Q1: What is special about the UCP203 series bore sizes?

The UCP203 series covers non-standard small metric bores of 12mm, 15mm, and 17mm — sizes that fall between the UCP202 (up to 15mm) and UCP204 (20mm+) series. The 17mm bore (UCP203-17MM) is the largest bore in the UCP203 series and is specifically designed for metric machinery with 17mm shafts.

Q2: How does UCP203-17MM differ from UCP204-20MM in terms of housing?

Both share the same overall length (127mm) and bolt spacing (~95.3mm), but the UCP203-17MM has a lower center height (30.2mm vs 33.3mm), narrower insert (62mm vs 65mm), and lower load capacity (Cr=9.9 kN vs 12.8 kN). Choose UCP203-17MM for 17mm shafts in low-profile installations; choose UCP204-20MM for 20mm shafts with higher load requirements.

Q3: Why does UCP203-17MM have fewer interchange listings than UCP204/205 series?

The 17mm bore is a less common size in North American machinery (which predominantly uses fractional inch shafts). As a result, fewer North American brands produce direct equivalents. However, European and Asian metric machinery manufacturers (Maedler, PTI, etc.) supply direct equivalents.

Q4: Can the UC203-17MM insert be replaced separately?

✅ Yes. The UC203-17MM insert bearing can be replaced independently without replacing the cast iron housing, significantly reducing maintenance costs. NEXANS Bearing supplies both complete UCP203-17MM units and UC203-17MM insert bearings separately.

Q5: 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.