{"product_id":"bartell-20921-gearbox-assembly-oem-replacement-walk-behind-trowel","title":"Bartell 20921 Gearbox Assembly OEM Replacement - Walk Behind Trowel","description":"\u003cp\u003eTransferring engine power to the trowel blades, the gearbox assembly is the mechanical heart of a walk-behind trowel, when it fails or wears beyond service limits, blade speed becomes inconsistent and finishing quality deteriorates rapidly. This is the complete gearbox assembly for the Bartell B436 and B436E walk-behind power trowels, supplied as a genuine OEM unit to ensure correct fit, torque capacity, and service life.\u003c\/p\u003e\u003cp\u003eThe gearbox interfaces directly with the main drive system, seating against the gearbox retaining plate and secured with a gearbox lock washer to prevent rotational loosening under load. During routine maintenance, technicians should inspect the gearbox mounting hardware, verify the integrity of the dust skirt and dust skirt springs that protect the gearbox from concrete slurry ingress, and confirm that all fasteners are torqued to specification. Premature gearbox wear is commonly caused by contamination from a compromised dust skirt, always inspect the skirt assembly when replacing this unit. The gearbox assembly should also be checked during any scheduled service involving the main drive or pivot frame, as misalignment in those assemblies accelerates internal gearbox wear.\u003c\/p\u003e\u003cp\u003eCompatible models include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBartell B436\u003c\/li\u003e\n\u003cli\u003eBartell B436E\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eGenuine Bartell Global OEM part, sold by an authorized dealer.\u003c\/p\u003e","brand":"Bartell","offers":[{"title":"Default Title","offer_id":43412760985648,"sku":"20921","price":2063.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6574\/7248\/files\/20921.jpg?v=1784314124","url":"https:\/\/cce-industries.com\/products\/bartell-20921-gearbox-assembly-oem-replacement-walk-behind-trowel","provider":"CCE Industries","version":"1.0","type":"link"}