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Powermatic WB-37 wide belt sander is a 37 inch woodworking sander that helps bring boards to a precise finished thickness, which supports accurate panel work and consistent parts across a run. The 20HP 3Ph 230/460V motor power described in the product name identifies this machine for shops wired for three-phase service that need heavy-duty sanding capacity in regular production. Centralized controls place all needed buttons on one simple panel so the operator can run the machine from a single location, which streamlines setup and keeps adjustments consistent between users. An auto thicknesser captures the piece of wood to set the exact starting thickness, reducing setup time when changing stock and supporting repeat sanding passes on matching parts. A digital readout shows the exact thickness of the finished piece or a preset thickness, which helps dial in target dimensions and reduces rework on fitted components.
The Powermatic WB-37 37 inch sander is powered as a 20HP 3Ph 230/460V machine, so it is specified for three-phase shop electrical systems that support this voltage range in a permanent location. Centralized controls place all buttons on one panel, which lets an operator stand in a consistent position to start, stop, and adjust settings, aiding workflow planning around the infeed and outfeed areas. The three motor system independently powers the drive drums, the variable speed feed belt, and the feed table, so each function operates on its own power source and can sustain its role during long sanding sessions. The variable speed feed belt, driven by its own motor, lets the user change feed rate at the control area rather than changing pulleys, which fits into day-to-day job changes.
The Powermatic WB-37 37 inch sander sits in the sanders, wide belt machinery class, positioning it as a production tool for flattening and thicknessing wood pieces rather than spot sanding. The auto thicknesser captures each piece of wood to define the starting thickness, so the machine can be set up based on the actual workpiece before dialing in final passes. This supports workflows where material from different suppliers or lots may vary slightly, since settings can begin from the captured thickness for each run. The electric eye system manages sanding belt oscillation so the belt does not run off the ends of the drums, allowing longer sanding sessions on wider stock while keeping tracking under control. By using the sanding surface more uniformly, the oscillation pattern helps distribute wear across the belt width, supporting more consistent cutting action during extended use.
The centralized control panel concentrates the functions for the three motor system, the variable speed feed belt, and the disc brake in one location, so one operator can monitor thickness settings, belt speed, and stopping functions in a single view. The digital readout provides the exact thickness of the finished piece, which translates directly into predictable part dimensions when sanding door parts, drawer fronts, or panels to a numeric target. The same digital readout can be preset to a desired thickness, so the operator can work toward that number and stop when the display shows the selected value, helping maintain dimensional consistency across a job. The variable speed feed belt is part of the three motor system and allows the operator to accurately dial in feed speed, which can improve surface quality by matching slower or faster feed to the chosen grit. The disc brake slows the machine quickly and activates immediately for emergency stopping, reducing coast-down time so the operator can halt sanding action when a part problem or setup issue appears. Electric eye control over sanding belt oscillation also reduces sanding lines on the workpiece, supporting smoother finishes that demand less hand sanding or subsequent machine passes.
The Powermatic WB-37 is a 37 inch wide belt sander in the sanders, wide belt machinery class, so it is used for sanding and thicknessing wood panels and parts.
The auto thicknesser captures the piece of wood to give the exact starting thickness, which simplifies setup by basing machine settings on the actual workpiece.
The digital readout shows the exact thickness of the finished piece or a preset thickness, helping target specific dimensions for consistent part sizing.
The variable speed feed belt allows the operator to dial in the exact feed speed to suit the project, matching feed rate to grit and material for better surfaces.
The electric eye system controls sanding belt oscillation to prevent the belt running off drum ends and to use the sanding surface more uniformly without sanding lines.
The three motor system independently powers the drive drums, variable speed feed belt, and feed table, so each function has dedicated power for production sanding.
The Powermatic WB-37 37 inch wide belt sander, identified as PM9-1790837 with 20HP 3Ph 230/460V power, combines centralized controls, auto thicknesser, digital readout, and variable speed feed belt to support controlled thickness sanding in a woodworking shop. The electric eye sanding belt oscillation and disc brake features help the operator manage tracking and stopping while working through panels and parts. For shops needing a wide belt solution with digital thickness feedback and independent drive, feed, and table motors, this WB-37 configuration offers a clearly defined, production-focused sanding platform ready for integration into regular woodshop workflows.