{"title":"Brake Drums and Shoes for Class 8 Trucks and Trailers","description":"\u003ch2\u003eBrake-life parts that match OEM friction specs, not just the dimensions.\u003c\/h2\u003e\n\u003cp\u003eAn 80,000-pound Class 8 truck rolling at 65 miles per hour carries enough kinetic energy to lift a fully loaded school bus a hundred feet straight up. Stopping it does not destroy that energy. The brakes convert it into heat, and the heat goes into the drums, the shoes, and the air around them. A hard stop can drive drum temperatures past 600 degrees Fahrenheit. The shoes are designed to wear. The drums are designed to take the heat. Both are designed to be replaced.\u003c\/p\u003e\n\n\u003cp\u003eSteinberg stocks 3 brake SKUs in the size that fits most Class 8 tractors and trailer rear axles: 16.5 by 7 inches, S-Cam actuation, OEM-grade friction. Two shoe sets, Q-Plus and standard S-Cam, plus a multi-make brake drum cross-referenced to common Fruehauf and Strick trailer applications. All three ship same-day from Hodgkins, IL. NET-30 terms for qualified fleet accounts. For desiccant cartridges that protect the same air brake system upstream, see our \u003ca href=\"\/collections\/air-dryer-filters\"\u003eAir Dryer Filters\u003c\/a\u003e collection.\u003c\/p\u003e\n","products":[{"product_id":"brake-shoes-pa4707","title":"Brake Shoes PA4707 \/ FMSI 4707 - 16.5\" x 7\" Q-Plus S-Cam Heavy-Duty","description":"\u003cp\u003eA loaded Class 8 tractor coming down a five-percent grade carries roughly eight hundred thousand foot-pounds of kinetic energy. The friction surfaces inside its drum brakes turn most of that energy into heat in under a minute. Q-Plus is the FMSI designation for the friction grade engineered for that duty cycle, the one that holds rated coefficient under sustained 800°F drum temperature without fading and without glazing. The PA4707 is the 16.5 by 7 inch shoe assembly built to that grade, the size you see on virtually every air-brake S-Cam axle currently in service on a North American highway tractor or trailer.\u003c\/p\u003e\n\n\u003ch2\u003eFits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e16.5\" x 7\" S-Cam air brake systems\u003c\/li\u003e\n\u003cli\u003eClass 8 tractor steer and drive axles\u003c\/li\u003e\n\u003cli\u003eHeavy-duty trailers with S-Cam actuation\u003c\/li\u003e\n\u003cli\u003eFMSI designation: 4707 (Q-Plus friction grade)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCross-Reference\u003c\/h2\u003e\n\u003cp\u003eThe PA4707 carries the FMSI 4707 reference number, which is the multi-make industry standard for this shoe geometry. If your shop is replacing OEM-equivalent Q-Plus shoes, this is the same part by another stock number.\u003c\/p\u003e\n\n\u003ch2\u003eShipping\u003c\/h2\u003e\n\u003cp\u003eStocked in Hodgkins, Illinois. Orders placed before 2:00 PM Central Time ship the same business day. Net-30 terms available to qualified fleet accounts. For bulk fleet pricing, \u003ca href=\"\/pages\/contact\"\u003econtact us directly\u003c\/a\u003e.\u003c\/p\u003e","brand":"Steinberg","offers":[{"title":"Default Title","offer_id":53129422537070,"sku":"PA4707","price":55.0,"currency_code":"USD","in_stock":true}]},{"product_id":"brake-shoes-pa4709","title":"Brake Shoes PA4709 \/ FMSI 4709 - 16.5\" x 7\" S-Cam Heavy-Duty","description":"\u003cp\u003eThe S-Cam air-brake design is older than most of the drivers using it. Its endurance comes from being almost unreasonably simple, a cam that rotates to push a roller up the back of a shoe, the shoe expanding against a drum, the drum slowing a wheel. The PA4709 is the standard friction-grade shoe for 16.5 by 7 inch drum brakes, the same geometry as the Q-Plus version, with the friction formulation calibrated for line-haul duty where most braking events are moderate and steady rather than emergency or sustained-grade.\u003c\/p\u003e\n\n\u003ch2\u003eFits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e16.5\" x 7\" S-Cam air brake systems\u003c\/li\u003e\n\u003cli\u003eClass 8 tractor steer and drive axles\u003c\/li\u003e\n\u003cli\u003eHeavy-duty trailers with S-Cam actuation\u003c\/li\u003e\n\u003cli\u003eFMSI designation: 4709 (standard friction grade)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCross-Reference\u003c\/h2\u003e\n\u003cp\u003eThe PA4709 carries the FMSI 4709 industry reference. For sustained-grade braking duty (long mountain pulls, heavy trailers), the Q-Plus equivalent \u003ca href=\"\/products\/brake-shoes-pa4707\"\u003ePA4707\u003c\/a\u003e is the better spec match.\u003c\/p\u003e\n\n\u003ch2\u003eShipping\u003c\/h2\u003e\n\u003cp\u003eStocked in Hodgkins, Illinois. Orders placed before 2:00 PM Central Time ship the same business day. Net-30 terms available to qualified fleet accounts. For bulk fleet pricing, \u003ca href=\"\/pages\/contact\"\u003econtact us directly\u003c\/a\u003e.\u003c\/p\u003e","brand":"Steinberg","offers":[{"title":"Default Title","offer_id":53129425387886,"sku":"PA4709","price":55.0,"currency_code":"USD","in_stock":true}]},{"product_id":"brake-drum-3922x","title":"Brake Drum 3922X \/ 85123788002 - 16.5\" x 7\" Rear Axle for Fruehauf and Strick Trailers","description":"\u003cp\u003eA trailer brake drum spends most of its life doing nothing in particular, and then for forty seconds at a stretch it absorbs the entire kinetic budget of an eighty-thousand-pound combination. That cycle, repeated thousands of times, is what the drum is engineered for. The 3922X is the 16.5 by 7 inch cast-iron drum spec'd for the rear axles of Fruehauf and Strick trailers, two of the most common North American van and refrigerated trailer manufacturers in the line-haul fleet. Heat dissipation, hoop strength, and friction-mate compatibility are all set by the casting profile and the wall thickness, and the 3922X holds those tolerances against the same standard the OEM drum did.\u003c\/p\u003e\n\n\u003ch2\u003eFits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e16.5\" x 7\" rear-axle brake assemblies\u003c\/li\u003e\n\u003cli\u003eFruehauf trailers (van, refrigerated, flatbed)\u003c\/li\u003e\n\u003cli\u003eStrick trailers (van, refrigerated)\u003c\/li\u003e\n\u003cli\u003eOEM cross-reference: 85123788002\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCross-Reference\u003c\/h2\u003e\n\u003cp\u003eThe 3922X carries the multi-make industry reference 85123788002. Pair with FMSI 4709 standard or 4707 Q-Plus S-Cam shoes for a complete axle-end rebuild. See our \u003ca href=\"\/products\/brake-shoes-pa4707\"\u003ePA4707 Q-Plus\u003c\/a\u003e and \u003ca href=\"\/products\/brake-shoes-pa4709\"\u003ePA4709 standard\u003c\/a\u003e shoes.\u003c\/p\u003e\n\n\u003ch2\u003eShipping\u003c\/h2\u003e\n\u003cp\u003eStocked in Hodgkins, Illinois. Orders placed before 2:00 PM Central Time ship the same business day. Net-30 terms available to qualified fleet accounts. For bulk fleet pricing, \u003ca href=\"\/pages\/contact\"\u003econtact us directly\u003c\/a\u003e.\u003c\/p\u003e","brand":"Steinberg","offers":[{"title":"Default Title","offer_id":53129425518958,"sku":"3922X","price":85.0,"currency_code":"USD","in_stock":true}]}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/4255\/6526\/collections\/STEINBERG_44_513b818f-8b5a-4c5f-84d3-10625c6d09b2.png?v=1769928355","url":"https:\/\/www.steinbergus.com\/collections\/brakes.oembed","provider":"Steinberg","version":"1.0","type":"link"}