UEFL200 Series 2-Bolt Flange Bearing Units — Standard Duty, Concentric Collar Locking
The UEFL200 series brings the concentric locking collar of the UEP200/UEF200 family to the oval two-bolt flange housing. This makes the UEFL200 the correct choice for oval flange installations where shaft speed is too high for setscrew retention, or where the shaft reverses direction under load and an eccentric collar would release. The concentric collar's 360° uniform contact produces no imbalance force at any speed, and its symmetric release geometry makes it the only oval flange locking style that is genuinely suitable for high-speed bidirectional drives.
Key Features
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Concentric 360° Locking Collar
Uniform shaft contact, no eccentric mass, no imbalance at any speed. Releases symmetrically — fully bidirectional. Correct choice for high-speed and reversing oval flange installations.
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Same Oval Housing as UCFL200 / NAFL200
H, J, bolt-circle match UCFL200 for equivalent bore sizes. Upgrade by replacing insert only. B1 wider than UCFL200 B — verify axial clearance.
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Wide Inner Ring UE Insert
Spherical OD, 2° misalignment compensation, axial float capacity.
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Metric and Inch Bore
20–60 mm metric bore with inch variants per housing size.
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Solid Base Option
Hollow base standard. Solid base (SB) available on request.
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GB / ISO / ANSI / JIS Compliant
Interchangeable with UEFL200-pattern concentric collar oval flange units.
Full Dimensional Specifications
| Unit No. | d mm | d inch | H mm | J mm | A2 mm | A1 mm | A mm | N mm | L mm | B1 mm | S mm | Z mm | Bolt | kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UEFL204 / 204-12 | 20 | 3/4 | 113 | 90 | 15 | 11 | 25.5 | 12 | 60 | 33 | 12.7 | 35.3 | M10 | 0.47 |
| UEFL205 / 205-14~16 | 25 | 7/8~1 | 130 | 99 | 16 | 13 | 27 | 16 | 68 | 35.4 | 14.3 | 37.1 | M14 | 0.64 |
| UEFL206 / 206-17~20 | 30 | 1-1/16~1-1/4 | 148 | 117 | 18 | 13 | 31 | 16 | 80 | 39.8 | 15.9 | 41.9 | M14 | 0.95 |
| UEFL207 / 207-20~23 | 35 | 1-1/4~1-7/16 | 160 | 130 | 19 | 15 | 34 | 16 | 90 | 43.9 | 17.5 | 45.4 | M14 | 1.27 |
| UEFL208 / 208-24/25 | 40 | 1-1/2~1-9/16 | 175 | 144 | 21 | 15 | 36 | 16 | 100 | 50.2 | 19 | 52.2 | M14 | 1.62 |
| UEFL209 / 209-26~28 | 45 | 1-5/8~1-3/4 | 188 | 148 | 22 | 16 | 38 | 19 | 108 | 50.2 | 19 | 53.2 | M16 | 2.02 |
| UEFL210 / 210-30~32 | 50 | 1-7/8~2 | 197 | 157 | 22 | 16 | 40 | 19 | 115 | 52.6 | 19 | 55.6 | M16 | 2.27 |
| UEFL211 / 211-32~35 | 55 | 2~2-3/16 | 224 | 184 | 25 | 18 | 43 | 19 | 125 | 56.6 | 22.2 | 59.4 | M16 | 3.34 |
| UEFL212 / 212-36~39 | 60 | 2-1/4~2-7/16 | 250 | 202 | 29 | 18 | 48 | 23 | 140 | 66.6 | 25.4 | 70.2 | M20 | 4.30 |
→ 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 UCFL200 B before retrofitting. Solid base: suffix SB.
Applications
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High-Speed Oval Flange Fan Supports
Centrifugal fan shaft oval flange supports where shaft speeds exceed setscrew retention limits and the oval two-bolt format is preferred over the four-bolt square flange for installation simplicity.
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Reversing Oval Flange Drive Shafts
Servo-indexed and reciprocating drive shafts in oval flange positions where shaft reversal under load makes setscrew or eccentric collar locking inadequate.
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Centrifuge & Separator Oval Mounts
Centrifuge and disc separator shaft oval flange supports on vertical panel faces where dynamic balance and bidirectional retention are both required.
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Textile & Winding Oval Flange Spindles
Winding machine spindle oval flange supports where shaft speed is high and balance is critical, and the oval housing format suits the machine frame layout.
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Agricultural Precision Drive Oval Flanges
Precision seeder and drill metering shaft oval flange supports where shaft reversal during calibration makes eccentric collar locking unsuitable.
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Upgrade from NAFL200 on Reversing Drives
Drop-in insert upgrade from NAFL200 where drive reversal causes collar release. Housing H, J, bolt-circle unchanged.
📦 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 UEFL200 be used on a reversing drive?
Yes — concentric collar is fully bidirectional.
Interchangeable with UCFL200?
Yes for H, J, bolt-circle. B1 wider — verify axial clearance.
How does UEFL200 differ from NAFL200?
NAFL200 eccentric collar is unidirectional. UEFL200 concentric collar is bidirectional, no imbalance.
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 UEFL200 Series
Provide shaft diameter, operating speed (rpm), rotation direction, and bore type. Contact us.
