Industrial pulley 550 mm, 7 grooves, section B

EMMAR POLEA 550 7B belongs to pulleys, part of our Power transmission range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for POLEA 550 7B and any equivalents.

For plants that need a reliable way to transfer power between distant shafts, the EMMAR 550 7B pulley offers a 550 mm diameter and seven grooves for section B belts. Because MR Industrial Accessories makes this pulley in its own shop, the bore, keyway and bushing type can be adjusted to match your specific shaft and mounting setup. It is built to handle continuous duty in industrial environments, from process lines to workshop machinery.

The 550 7B is identified by its 550 mm outside diameter and seven belt grooves, all cut for section B belts. In MR's catalog it appears under the designation POLEA 550 7B. Since it comes from MR's own production, you are not limited to a fixed bore: the hub can be machined to the shaft size you indicate, and the keyway is cut to match. Section B is a common choice for medium-power drives, and with seven grooves the load is shared across multiple belts, which suits equipment that demands higher torque.

You will find this pulley in compressors, fans, centrifugal pumps, mills, screens and conveyors, as well as in mixers, process equipment and some machine tools. It is typically selected when a stable speed ratio is needed and the motor can be moved to adjust belt tension. The seven-groove configuration also gives some flexibility: if one belt fails, the remaining belts can still transmit reduced power until maintenance is scheduled.

When specifying a replacement or a new drive, gather the power to be transmitted, the RPM of both shafts, and confirm the belt section is B. Measure the shaft diameter to establish the required bore and keyway, and check the space available for the pulley's outside diameter. During installation, ensure the pulley runs concentric with the shaft and fits without play to minimize vibration. If a taper bushing is used, follow the bushing maker's mounting procedure.

If your application calls for a different diameter or a different number of grooves, MR can evaluate a custom pulley within the same section B. To start that process, send the part number POLEA 550 7B or provide the equipment data: current diameter, groove count, belt section and shaft diameter. The technical team will review the feasibility of a made-to-order pulley.

To request a quote for this pulley or discuss a variant, contact us via WhatsApp and include the part number POLEA 550 7B. You can also share the shaft dimensions and the number of grooves you need. MR Industrial Accessories manufactures pulleys, split plummer block housings and ANSI chains, and distributes bearings, seals and power transmission components. Our team can help you select the right option for your application.