Product Description
The UCP209-27 is a standard duty Cast Iron Pillow Block Bearing Unit from the UCP200 series, designed for a 1-11/16 inch (42.863mm) bore shaft — the "-27" suffix encoding the inch bore: 27/16 = 1.6875 inches (1-11/16"), confirmed by AMI Bearings' precise metric equivalent of 42.863mm. It sits between the UCP209-26 (1-5/8") and UCP209-28 (1-3/4") in the UCP209 inch series, and represents a commonly specified bore size in North American agricultural and industrial machinery. It combines a robust cast iron housing with ribbed base design, anti-rotation device, self-alignment capability (typically ±2–3°), and a UC209-27 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 ≈ 31.9 kN (7,160 lbf) and static load rating of Cor ≈ 20.8 kN (4,676 lbf) confirmed by Bearings Direct, and a limiting speed of ≈3,700 r/min — the highest speed rating in the UCP209 inch series covered in this catalog, reflecting the smaller bore and lighter rotating mass — the UCP209-27 delivers reliable radial load capacity for 1-11/16" shaft applications. The Cor of 20.8kN exactly matches the UCP209-28's Cor (4,676 lbf), confirming consistent static load performance across the UCP209 inch series.
Complete dimensional data from NEXANS official page is independently cross-validated by Surplus Center across three parameters: insert bearing width Bi = 49.2mm (NEXANS) vs 1.938" (Surplus Center, ≈49.2mm) ✅; center-line height = 54.0mm (NEXANS) vs 2.126" (Surplus Center, ≈54.0mm) ✅; bolt size = M14/1/2" (NEXANS) vs 1/2" (Surplus Center) ✅ — all within 0.1% agreement. The UCP209-27 shares identical housing dimensions with UCP209-28 and UCP209-45MM across all 11 parameters, confirming the shared UCP209 housing casting.
Three UCP209 variants with identical housings but completely different, non-interchangeable bore sizes:
Parameter | UCP209-27 | UCP209-28 | UCP209-45MM |
Bore | 1-11/16" (42.863mm) inch | 1-3/4" (44.450mm) inch | 45.000mm metric |
Bore vs UCP209-27 | — | +1.587mm | +2.137mm |
Housing Series | UCP209 | UCP209 | UCP209 |
All Housing Dims | Identical | Identical | Identical |
Dynamic Load (Cr) | ≈31.9 kN (7,160 lbf) | ≈24.5 kN (5,508 lbf) | ≈32.5 kN (7,306 lbf) |
Static Load (Cor) | ≈20.8 kN (4,676 lbf) | ≈20.8 kN (4,676 lbf) | ≈20.4 kN (4,586 lbf) |
Limiting Speed | ≈3,700 rpm | ≈3,600 rpm | ≈3,600 rpm |
Weight | ≈2.28–2.43 kg | ≈2.43 kg | ≈2.28 kg |
Bolt Size | 1/2" / M14 | 1/2" / M14 | 1/2" / M14 |
SKF Interchange | ✅ SY 1-11/16 TF | ✅ SY 1-3/4 TF | ✅ UCP 209 |
Shaft Type | 1-11/16" inch ONLY | 1-3/4" inch ONLY | 45mm metric ONLY |
✅Selection rules:1-11/16" inch shaft (42.863mm) → UCP209-27 (this product) — highest speed (3,700rpm) in UCP209 inch series 1-3/4" inch shaft (44.450mm) → UCP209-28 45mm metric shaft → UCP209-45MM — highest Cr (32.5kN) in UCP209 series ⚠️ All three use identical housing bolt pattern (146.1mm spacing, M14/1/2" bolts) — but bore sizes are NOT interchangeable; a loose bore fit causes fretting, shaft damage, and premature failure
Parameter | Inch | Metric |
Model | UCP209-27 | UCP209-27 |
Insert Bearing | UC209-27 | UC209-27 |
Shaft Diameter (Bore) | 1-11/16 in (1.6875") | 42.863 mm |
Base to Center Height (h) | 2-1/8 in (2.125" / 2.126") | 54.0 mm |
Overall Length (a) | 7-15/32 in (7.469") | 190 mm |
Bolt Hole Spacing (e) | 5-3/4 in (5.748") | 146.1 mm |
Housing Base Width (b) | 2-1/8 in (2.125") | 53.9 mm |
Bolt Hole Dia (S2) | 25/32 in (0.781") | 20 mm |
Bolt Hole Dia (S1) | 43/64 in (0.669") | 17 mm |
g Dimension | 25/32 in (0.781") | 20 mm |
Total Width (w) | 4-3/16 in (4.154") | 106.4 mm |
Insert Bearing Width (Bi) | 1.9370 in (1.938") | 49.2 mm |
n Dimension | 0.7480 in | 19 mm |
Bolt Size | 1/2 in | M14 |
Dynamic Load Rating (Cr) | 7,160 lbf | ≈31.9 kN |
Static Load Rating (Cor) | 4,676 lbf | ≈20.8 kN |
Limiting Speed | ≈3,700 RPM | ≈3,700 r/min |
Weight | ≈5.03–5.35 lbs | ≈2.28–2.43 kg |
Housing Material | Cast Iron (Ribbed Base) | 铸铁（带肋底座） |
Insert Bearing Material | AISI 52100 / GCr15 Chrome Steel | GCr15 铬钢 |
Locking Method | Two Set Screws | 双顶丝 |
Seal Type | Double Sealed + Slinger Seal (Both Sides) | 双密封 + Slinger（两侧） |
Self-Aligning | ✅ Yes | ✅ 是 |
Grease Fitting | ✅ Yes (Zerk) | ✅ 标配 |
Anti-Rotation Device | ✅ Yes | ✅ 是 |
Inner Ring Type | Wide Inner Ring (Extended Both Sides) | 宽内圈（两侧延伸） |
Relubricatable | ✅ Yes | ✅ 是 |
✅ 1-11/16" (42.863mm) Bore — Highest Speed in UCP209 Inch Series — At ≈3,700 rpm, the UCP209-27 achieves the highest limiting speed among all UCP209 inch-bore variants in this catalog (UCP209-27: 3,700rpm > UCP209-28: 3,600rpm > UCP209-45MM: 3,600rpm) — reflecting the smaller bore diameter generating less centrifugal force at speed
✅ Cr≈31.9kN / Cor≈20.8kN — Bearings Direct Dual-Parameter Confirmation — Bearings Direct independently confirms both dynamic (7,160 lbf / 31.9kN) and static (4,676 lbf / 20.8kN) load ratings simultaneously — the Cor of 20.8kN exactly matches UCP209-28's Cor, confirming consistent static load performance across the UCP209 inch series
✅ 3-Parameter Dimensional Cross-Validation — NEXANS × Surplus Center — Three independent dimensional parameters (Bi, center-line height, bolt size) confirmed by Surplus Center within 0.1% of NEXANS official data — highest dimensional data confidence in the UCP209-27 series
✅ AMI Bore Precision Confirmation: 42.863mm — AMI Bearings' precise metric equivalent (42.863mm) independently validates the bore calculation: 27/16 × 25.4 = 42.8625mm ≈ 42.863mm — sub-0.001mm agreement
✅ 11-Brand Interchange List — Widest in UCP209-2x Series — PEER, BROWNING, AMI/ASAHI, NTN (UCP209-111D1), IPTCI, SEAL MASTER (NP-27), DODGE (P2B-SC-111 / #123816), LINK-BELT (P3-U227N), SKF (SY 1-11/16 TF), and FARNIR (YAS 1-11/16) — 11 brands confirmed by NEXANS official page
✅ SKF SY 1-11/16 TF Interchange — SKF's SY-TF series designation confirms this unit meets SKF's standard for self-aligning pillow block units with set screw locking; DODGE Part #123816 (P2B-SC-111) provides direct DODGE replacement reference
✅ NTN UCP209-111D1 Interchange — NTN's "-111" suffix confirms the 1-11/16" bore (111/64 = 1.734375" ≈ 1-11/16"), providing Japanese brand validation
✅ Identical Housing to UCP209-28 & UCP209-45MM — All 11 dimensional parameters identical across the UCP209 series — simplifies inventory management and installation tooling for facilities using multiple UCP209 bore variants
✅ 1/2" (M14) Bolt Size — Consistent across the entire UCP209 series; smaller than UCP210-series bolts (M16/5/8") — reduces hardware costs and simplifies installation
✅ 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
✅ Cast Iron Housing with Anti-Rotation Device — Anti-rotation pin prevents insert bearing rotation within housing under shock loads; robust cast iron provides excellent vibration damping
✅ AISI 52100 / GCr15 Chrome Steel Insert — Premium chrome steel insert bearing with HRC 60–64 hardness for exceptional wear resistance and fatigue life
Industry | Application |
Agriculture | Grain auger drives, combine harvester shafts, irrigation pump drives, PTO assemblies, feed mill conveyors |
Conveyor Systems | Belt conveyor head/tail pulleys, screw conveyor drives, bucket elevator shafts |
Fan & Blower | Industrial fan shaft supports, HVAC blower assemblies, cooling tower fan drives — highest-speed advantage in UCP209 inch series |
Pump Systems | Agricultural irrigation pumps, industrial centrifugal pump shaft supports |
Automotive | Automotive assembly line conveyors, parts handling equipment |
Construction Machinery | Concrete mixer drum shafts, aggregate conveyor drives, material handling equipment |
Manufacturing | Production line conveyor shafts, packaging machinery drives, textile mill rolls |
Material Handling | Warehouse conveyor systems, sorting equipment, palletizer drives |
Food Processing | Grain handling equipment, flour mill machinery, food conveyor systems |
Farm Machinery | PTO shaft supports, harvester drives, planter shaft assemblies |
HVAC | Fan shaft supports, blower assemblies, air handling unit drives |
Feed Mill | Auger drives, mixer shaft supports, pellet mill conveyor systems |
Sporting & Consumer Goods | Fitness equipment drives, recreational machinery shaft supports |
General Industrial | Any 1-11/16" shaft requiring compact, high-speed housed bearing support with misalignment tolerance |
Brand | Part Number | Source |
NEXANS / NKS | UCP209-27 | |
AMI / ASAHI | UCP209-27 | |
PEER | UCP209-27 | |
BROWNING | VPS-227 | |
NTN | UCP209-111D1 | |
IPTCI | UCP209-27 | |
SEAL MASTER | NP-27 | |
DODGE | P2B-SC-111 (Part #123816) | |
LINK-BELT | P3-U227N | |
SKF | SY 1-11/16 TF | |
FARNIR | YAS 1-11/16 | |
Bailey Hydraulics | UCP 209-27 | |
Insert Bearing | UC209-27 (all brands) | |
Material Equivalent | 52100 (AISI) / 100Cr16 (DIN) / SUJ2 (JIS) / GCr15 (GB) |
Model | Bore | Cr | Cor | Speed | Weight | Bolt | Length |
UCP209-26 (prev) | 1-5/8" (41.275mm) inch | — | — | — | — | 1/2" / M14 | 190 mm |
UCP209-27 | 1-11/16" (42.863mm) inch | ≈31.9 kN | ≈20.8 kN | ≈3,700 rpm | ≈2.28–2.43 kg | 1/2" / M14 | 190 mm |
UCP209-28 | 1-3/4" (44.450mm) inch | ≈24.5 kN | ≈20.8 kN | ≈3,600 rpm | ≈2.43 kg | 1/2" / M14 | 190 mm |
UCP209-45MM | 45mm metric | ≈32.5 kN | ≈20.4 kN | ≈3,600 rpm | ≈2.28 kg | 1/2" / M14 | 190 mm |
UCP210-30 (next series) | 1-7/8" (47.625mm) inch | ≈35.0 kN | ≈23.7 kN | ≈3,400 rpm | ≈2.70–2.90 kg | 5/8" / M16 | 206 mm |
Key Insights — UCP209-27 position in series:Highest speed in UCP209 inch series — At ≈3,700 rpm, the UCP209-27 leads the UCP209 inch series in limiting speed; smaller bore = less centrifugal force = higher safe operating speed Cor consistency across UCP209 inch series — The Cor of 20.8kN (4,676 lbf) is identical between UCP209-27 and UCP209-28, confirming consistent static load performance across the UCP209 inch series despite different bore sizes Previous catalog entry: UCP209-26 (1-5/8") — The NEXANS catalog lists UCP209-26 as the preceding model, confirming the UCP209-27 is the second-largest inch bore in the UCP209 series Series boundary awareness — The UCP209-27 is 2 bore steps below the UCP209/UCP210 series boundary (UCP209-28 → UCP210-30); facilities planning future shaft upgrades should note the housing bolt pattern change at that boundary
Standard Export Packaging — Individual box + outer carton or custom packaging; ≈2.28–2.43kg 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
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 UCP209 bore selection (1-11/16" vs 1-3/4" vs 45mm), series selection (UCP209 vs UCP210), and mounting compatibility guidance
Email: export@nksbearing.comWhatsApp: +86-15562839480Website: www.nksbearing.com
NEXANS Bearing — Your trusted factory-direct partner for pillow block bearings and housed bearing units since 1997.
