UEFB200 Series 3-Bolt Flange Bearing Units — Flange Bracket, Concentric Collar Locking
The UEFB200 series combines the three-bolt flange bracket housing of the UCFB200 with the concentric locking collar insert of the UEF200 square flange unit. This pairing serves installations that require both the corner-mounting geometry of the three-bolt bracket and a locking mechanism capable of handling high shaft speeds or bidirectional rotation. Where the UCFB200 setscrew insert would be marginal at speed, and the three-bolt bracket geometry is dictated by the machine frame layout, the UEFB200 provides the concentric collar alternative in the same bracket housing without any change to the mounting bolt positions.
Concentric Collar in a Bracket Housing
The concentric collar of the UE insert bearing applies uniform 360° clamping pressure to the shaft with no eccentric mass. This eliminates the imbalance force that a setscrew or eccentric collar would introduce at high peripheral shaft speeds, making the UEFB200 appropriate for bracket-mounted fan shafts, winding machine spindle supports, and precision drive shafts where dynamic balance within the bracket mounting is a design requirement. The collar releases symmetrically in both directions, enabling use on reversing drives — a capability that neither the UCFB200 setscrew nor an eccentric collar bracket unit can match.
Key Features
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Concentric 360° Locking Collar
No eccentric mass. No imbalance force. Grip does not depend on rotation direction — fully bidirectional. Suitable for high-speed and reversing bracket-mounted drives.
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Three-Bolt Bracket at 45°
Same bracket housing as UCFB200. J, j, H0, H dimensions match UCFB200 for equivalent bore sizes — upgrade to concentric locking by replacing insert only.
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Wide Inner Ring UE Insert
B1 (collar insert width) slightly wider than UCFB200 B — verify axial clearance when retrofitting. Self-aligning spherical OD.
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Metric and Inch Bore
20–50 mm metric bore with inch bore variants per housing size.
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Grease Fitting at 45° Standard
Factory pre-lubricated insert. Re-lubrication accessible in standard bracket mounting orientations.
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GB / ISO / ANSI / JIS Compliant
Interchangeable with UEFB200-pattern bracket units from all compliant manufacturers.
Full Dimensional Specifications
| Unit No. | d mm | d inch | H0 mm | H mm | J mm | j mm | A2 mm | A1 mm | A mm | N mm | L mm | P mm | B1 mm | S mm | Z mm | Bolt | kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UEFB204 / 204-12 | 20 | 3/4 | 110 | 42 | 32 | 27 | 15 | 13 | 25.5 | 10 | 62 | 52 | 33 | 12.7 | 35.3 | M8 | 0.692 |
| UEFB205 / 205-14~16 | 25 | 7/8~1 | 116 | 45 | 34 | 27 | 16 | 13 | 27 | 10 | 68 | 56 | 35.4 | 14.3 | 37.1 | M8 | 0.87 |
| UEFB206 / 206-17~20 | 30 | 1-1/16~1-1/4 | 130 | 50 | 40 | 29 | 18 | 13 | 31 | 10 | 78 | 65 | 39.8 | 15.9 | 41.9 | M8 | 1.13 |
| UEFB207 / 207-20~23 | 35 | 1-1/4~1-7/16 | 144 | 55 | 46 | 32 | 19 | 15 | 34 | 10 | 90 | 70 | 43.9 | 17.5 | 45.4 | M8 | 1.50 |
| UEFB208 / 208-24/25 | 40 | 1-1/2~1-9/16 | 164 | 60 | 50 | 41 | 21 | 16 | 36 | 12 | 100 | 78 | 50.2 | 19.0 | 52.2 | M10 | 2.07 |
| UEFB209 / 209-26~28 | 45 | 1-5/8~1-3/4 | 174 | 65 | 54 | 43 | 22 | 18 | 38 | 12 | 106 | 80 | 50.2 | 19.0 | 53.2 | M10 | 2.43 |
| UEFB210 / 210-30~32 | 50 | 1-7/8~2 | 184 | 68 | 58 | 46 | 22 | 18 | 40 | 12 | 112 | 86 | 52.6 | 19.0 | 55.6 | M10 | 2.80 |
→ Scroll horizontally to view all columns. Catalogue dimensions for reference only — engineering drawings required before order.
B1 = concentric collar insert width. Verify axial clearance vs UCFB200 B before retrofitting. Solid base: suffix SB.
Applications
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Bracket-Mounted Fan & Blower Shafts
Centrifugal fan shaft supports on bracket-mounted fan units where the three-bolt bracket fits the frame corner and shaft speed makes setscrew locking inadequate. Concentric collar eliminates imbalance at speed.
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Precision Spindle Bracket Supports
High-speed spindle supports on grinding and milling machines where the bracket position is fixed by the machine frame and the concentric collar provides the balance and retention required at operating speed.
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Reversing Bracket Drive Shafts
Bracket-mounted shaft supports on servo-indexed and reciprocating drives where the three-bolt bracket is required by the machine layout and shaft reversal makes setscrew or eccentric collar locking unsuitable.
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Textile & Winding Machine Bracket Positions
High-speed yarn winding and texturing machine spindle bracket supports where the bracket geometry is dictated by the machine frame and balance is critical.
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Upgrade from UCFB200 at High Speed
Drop-in upgrade from UCFB200 where shaft speed has increased beyond setscrew retention limits. Housing and bolt positions unchanged — replace insert bearing only.
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Agricultural Precision Equipment Brackets
Seed metering and precision dosing shaft bracket supports on implement frames where the bracket mounting geometry is fixed and the shaft reverses during calibration.
📦 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
Can UEFB200 be used on a reversing drive?
Yes — concentric collar releases symmetrically, no directional dependency.
Is the housing the same as UCFB200?
Yes for H0, H, J, j, bolt positions. B1 is slightly wider — verify axial clearance.
How does UEFB200 differ from UCFB200?
UCFB200 = setscrew; UEFB200 = concentric collar for high speed and reversing drives.
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 UEFB200 Series
Provide shaft diameter, operating speed (rpm), rotation direction, and bore type. Contact us.
