UCFX00 Series 4-Bolt Flange Bearing Units — Medium Duty, Setscrew Locking
The UCFX00 series occupies the same load tier relative to UCF200 as the UCPX00 does relative to UCP200: a heavier housing cross-section, a larger UC insert bearing with higher rated capacity, and a wider flange plate that increases resistance to housing tilt under eccentric radial loads from belt tension or chain pull. When a UCF200 installation shows premature bearing failure or housing-face fretting that indicates the standard-duty housing is reaching its structural limits, the UCFX00 is the direct medium-duty upgrade in the same four-bolt flange format, with the same setscrew locking procedure and the same bore suffix system.
Why Medium Duty? — Load Capacity Context
The UCFX00 housing is cast to a heavier section than UCF200 at equivalent bore sizes. The insert bearing is also a heavier UC variant with higher static and dynamic load ratings. This double improvement — housing stiffness and insert capacity — addresses the two most common failure modes of a standard-duty flange unit under elevated load: housing tilt causing loss of bearing alignment, and insert bearing fatigue from loads that exceed the rated capacity. When L10 calculations show UCF200 life below 20,000 hours under the actual application load-speed combination, UCFX00 is the next step before moving to a fundamentally different bearing type.
Key Features
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Heavy-Section Cast Iron Flange
Wider housing cross-section and thicker flange plate deliver higher moment stiffness and bending resistance than UCF200 at equivalent bore sizes.
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Dual Setscrew Locking at 120°
Same retention geometry as UCF200 — procedural consistency for maintenance teams. No crew retraining required when upgrading from standard duty.
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Heavier UC Insert Bearing
Higher C and C0 ratings than UCF200 equivalent. Wide inner ring accommodates axial float.
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Hollow Base Standard / Solid Base Option
Hollow base standard. Solid base (SB) available on request for the highest belt-tension installations.
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Standard Grease Access
Grease fitting at 45° standard; 90° on request.
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Wide Bore Coverage with Inch Variants
25–85 mm metric bore with multiple inch bore inserts per housing size.
Full Dimensional Specifications
| Unit No. | d mm | d inch | L mm | J mm | A2 mm | A1 mm | A mm | N mm | B mm | S mm | Z mm | Bolt | kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UCFX05 / 05-13~16 | 25 | 13/16~1 | 108 | 83 | 18 | 13 | 30 | 12 | 38.1 | 15.9 | 40.2 | M10 | 1.0 |
| UCFX06 / 06-17~20 | 30 | 1-1/16~1-1/4 | 117 | 92 | 19 | 14 | 34 | 16 | 42.9 | 17.5 | 44.4 | M14 | 1.7 |
| UCFX07 / 07-21~23 | 35 | 1-5/16~1-7/16 | 130 | 101.5 | 21 | 14 | 38 | 16 | 49.2 | 19 | 51.2 | M14 | 2.1 |
| UCFX08 / 08-24/25 | 40 | 1-1/2~1-9/16 | 137 | 105 | 22 | 14 | 40 | 19 | 49.2 | 19 | 52.2 | M16 | 2.4 |
| UCFX09 / 09-26~29 | 45 | 1-5/8~1-13/16 | 143 | 111 | 23 | 14 | 40 | 19 | 51.6 | 19 | 55.6 | M16 | 2.5 |
| UCFX10 / 10-30~32 | 50 | 1-7/8~2 | 162 | 130 | 26 | 20 | 44 | 19 | 55.6 | 22.2 | 59.4 | M16 | 3.9 |
| UCFX11 / 11-33~37 | 55 | 2-1/16~2-5/16 | 175 | 143 | 29 | 20 | 49 | 19 | 65.1 | 25.4 | 68.7 | M16 | 4.9 |
| UCFX12 / 12-38/39 | 60 | 2-3/8~2-7/16 | 187 | 149 | 34 | 21 | 59 | 19 | 65.1 | 25.4 | 73.7 | M16 | 5.2 |
| UCFX13 / 13-40/41 | 65 | 2-1/2~2-9/16 | 187 | 149 | 34 | 21 | 59 | 19 | 74.6 | 30.2 | 78.4 | M16 | 5.3 |
| UCFX14 / 14-42~44 | 70 | 2-5/8~2-3/4 | 197 | 152 | 37 | 24 | 60 | 23 | 77.8 | 33.3 | 81.5 | M20 | 7.3 |
| UCFX15 / 15-45~48 | 75 | 2-13/16~3 | 197 | 152 | 40 | 24 | 68 | 23 | 82.6 | 33.3 | 89.3 | M20 | 8.1 |
| UCFX16 / 16-49~52 | 80 | 3-1/16~3-1/4 | 214 | 171 | 40 | 24 | 70 | 23 | 85.7 | 34.1 | 91.6 | M20 | 9.9 |
| UCFX17 / 17-53~55 | 85 | 3-5/16~3-7/16 | 214 | 171 | 40 | 24 | 70 | 23 | 96 | 39.7 | 96.3 | M20 | 11.0 |
→ Scroll horizontally to view all columns. Catalogue dimensions for reference only — engineering drawings required before order.
Applications
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Heavy Belt Drive Vertical Frame Supports
Drive sprocket and pulley shaft supports on vertical-frame conveyors where belt tensions push a UCF200 toward its rated capacity and housing tilt under belt pull is a concern.
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Quarry & Aggregate Panel-Mount Drives
Screen deck and crusher auxiliary shaft supports on vertical side-plate structures where impact loads combined with belt pull demand medium-duty housing stiffness.
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Building Materials Plant Frame Drives
Brick and tile extrusion screw shaft supports on vertical press frames where high cyclic radial loads demand housing stiffness beyond standard duty.
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Agricultural OEM Heavy Implement Frames
Combine harvester and large implement shaft supports on vertical frame panels where crop-load variability creates peak bearing loads that exceed UCF200 rated capacity.
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Industrial Mixer Frame Supports
Paddle mixer and agitator shaft flange supports on vertical vessel end plates where cantilevered impeller weight generates sustained radial bending moments.
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Direct Upgrade from UCF200
Drop-in medium-duty upgrade from UCF200 when field service shows short bearing life. Same setscrew procedure and bore suffixes. Specify UCFX in place of UCF for the same bore code.
📦 MOQ & Order Information
- Standard parts: quantity-based MOQ applies per model number.
- High-value / large items: minimum order by USD order value.
- New-client samples: 1–5 pcs available at sample price for first-time buyers.
- Multi-model combines: aggregate orders of USD 1,500 or more across models accepted.
- Special materials / processes: subject to process MOQ — confirm at inquiry stage.
- Retail (1–2 pcs): not accepted. Minimum sample order is 1–5 pcs at sample pricing.
Engineering drawings must be submitted and approved before order confirmation. Catalogue dimensions are for reference only.
Frequently Asked Questions
How does UCFX00 compare to UCF300?
UCFX00 is medium duty. Use when UCF200 is marginal but UCF300 would be oversized.
Does UCFX00 use the same insert as UCF200?
No — heavier UC insert with higher load ratings.
Is solid base available?
Yes — suffix SB. Factory option.
What is the MOQ?
Standard parts: quantity-based MOQ. Samples 1–5 pcs. Multi-model from USD 1,500. Retail 1–2 pcs not accepted.
Request a Quote for UCFX00 Series
Provide shaft diameter, radial load estimate, belt tension if applicable, and operating speed. Contact us.
