{"product_id":"bartell-21797-spider-plate-oem-replacement-part","title":"Bartell 21797 Spider Plate - OEM Replacement Part","description":"\u003cp\u003eThe spider plate is the central rotating hub assembly on a walk behind power trowel, transferring drive torque from the gearbox output shaft to the finishing blades, when this component wears or cracks, blade pitch becomes inconsistent and surface finish quality deteriorates rapidly, making timely replacement critical to getting a trowel back into service.\u003c\/p\u003e\u003cp\u003ePart number 21797 is a genuine Bartell Global OEM spider plate engineered to factory specifications for the BC436 walk behind trowel series. As the mechanical interface between the pitch control mechanism and the trowel arms, this component must maintain precise dimensional tolerances to ensure uniform blade angle across all arms. A failing spider plate typically presents as uneven concrete finishing, excessive vibration, or visible wobble in the blade assembly during operation. Technicians should inspect the spider plate during routine service intervals and any time blade pitch adjustment becomes inconsistent or the machine develops abnormal vibration patterns.\u003c\/p\u003e\u003cp\u003eCompatible models:\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBC436\u003c\/li\u003e\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":43412763607088,"sku":"21797","price":224.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/6574\/7248\/files\/21797.jpg?v=1784314293","url":"https:\/\/cce-industries.com\/products\/bartell-21797-spider-plate-oem-replacement-part","provider":"CCE Industries","version":"1.0","type":"link"}