A flange may look smooth and still fail to seal. Flatness, runout, feed pattern and surface roughness must match the gasket and service duty. A high precision flange facing machine restores damaged sealing faces by removing controlled material and generating a repeatable spiral or concentric pattern. The purchasing decision should therefore begin with the required finished surface, then match the machine range, mounting method and drive.
What Defines a High Precision Flange Finish
| Control Point | Why It Matters | Site Verification | Buyer Requirement |
|---|---|---|---|
| Mounting stability | Movement creates chatter and uneven finish. | Clock the machine before cutting. | Confirm bore and clamp range. |
| Flatness and runout | Controls gasket stress distribution. | Record dial-indicator readings. | State tolerance and inspection method. |
| Surface roughness | Must suit gasket type and pressure duty. | Check with comparator or profilometer. | Specify target Ra or AARH. |
| Groove pattern | Radial scratches may form leak paths. | Inspect the complete sealing band. | Define spiral or concentric finish. |
Model Selection and Technical Range
| Product | Facing Range | Mounting Range | Feed Stroke | Tool Swivel | Speed | Typical Use |
|---|---|---|---|---|---|---|
| WFS-2000 | 762-2000 mm | 604-1830 mm | 102 mm | +/-30 degrees | 0-22 r/min | Large flanges and seal grooves |
| WFH-610 | 50-610 mm | 50-508 mm | 50 mm | +/-30 degrees | 0-42 r/min | Compact valves pumps and pipes |
The WFS-2000 is the larger portable flange facing machine class, with a 762-2000 mm facing range and 604-1830 mm internal mounting range. Its 102 mm tool-feed stroke and adjustable tool holder support flat facing, RTJ groove machining, weld preparation and counterboring. For shutdown planning, buyers should include lifting and access arrangements because the series table lists substantial machine mass.
The WFH-610 covers 50-610 mm faces and is better suited to smaller pipe, valve and pump flanges. Its ID mounted flange facer uses four-point internal clamping, automatic axial and radial feed, and a 360-degree rotatable holder. Precision still depends on setup: verify bore condition, mounting concentricity, tool sharpness, feed rate and depth of cut before accepting the final serrated flange finish.
Page naming should be confirmed in the quotation: the WFP-2000 URL identifies the page heading and model as WFS-2000, while the WFH-610 hydraulic URL currently displays “Pneumatic” in its heading. The series description lists pneumatic, servo-electric and hydraulic drive options, so the signed order should state the exact model code and power package.
Buyer FAQs
| Procurement Question | Short Answer |
|---|---|
| Which model suits a 500 mm flange? | WFH-610 fits the stated facing range; confirm the actual bore for ID mounting. |
| Which model suits a 1500 mm flange? | Select WFS-2000 when both facing and mounting diameters fall inside its ranges. |
| What data should buyers send? | Provide flange face and bore diameters, gasket type, damage map, target finish, access and drive preference. |
Post time: Oct-28-2026