{"product_id":"mama-rock-screen","title":"Bear Iron Works Mama Grizzly Rock Screen for Backhoes \u0026 Tractors","description":"\u003ch1 data-section-id=\"x17e9f\" dir=\"auto\" data-start=\"140\" data-end=\"206\" class=\"PDq2pG_selectionAnchorContainer\"\u003eBear Iron Works Mama Grizzly Rock Screen for Backhoes \u0026amp; Tractors\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp dir=\"auto\" data-start=\"208\" data-end=\"657\"\u003eThe Bear Iron Works Mama Grizzly Rock Screen is a heavy-duty material screening solution designed for contractors using standard-size backhoes, larger tractors, skid steers, and other suitable jobsite equipment. With an actual screening capacity of approximately 3.4 cubic yards, the Mama provides a larger working area than the Cub while remaining practical for everyday construction, excavation, landscaping, and aggregate-processing applications.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"659\" data-end=\"969\"\u003eBuilt with solid steel screening bars rather than hollow tubing, the Mama is designed to withstand repeated impact while maintaining consistent screen openings. The square-welded frame helps reduce bar deflection, funneling, and material jams, allowing soil and aggregate to flow efficiently across the screen.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"971\" data-end=\"1360\"\u003eThe standard configuration uses 3-inch screen spacing, while available spacing options allow the machine to be configured for different material sizes. For finer screening, an optional removable screen system can be added using abrasion-resistant crusher mesh. The removable system is designed to be changed using the operator’s equipment without relying on traditional bolts or fasteners.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1362\" data-end=\"1621\"\u003eThe Mama is positioned as Bear Iron Works’ standard Grizzly for larger jobsite applications. It is particularly well suited to contractors who have outgrown the Cub and need additional width and capacity without moving all the way up to the loader-sized Papa.\u003c\/p\u003e\n\u003ch2 data-section-id=\"15gbdzz\" dir=\"auto\" data-start=\"1623\" data-end=\"1656\"\u003eWhich model should you choose?\u003c\/h2\u003e\n\u003cp dir=\"auto\" data-start=\"1658\" data-end=\"1784\"\u003e\u003cstrong data-start=\"1658\" data-end=\"1668\"\u003eKoala:\u003c\/strong\u003e Designed for smaller yard tractors and ride-on skid steers where compact size and maneuverability are the priority.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1786\" data-end=\"1869\"\u003e\u003cstrong data-start=\"1786\" data-end=\"1798\"\u003eGrowler:\u003c\/strong\u003e A step up from the Koala for compact skid steers and utility tractors.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1871\" data-end=\"1970\"\u003e\u003cstrong data-start=\"1871\" data-end=\"1879\"\u003eCub:\u003c\/strong\u003e Designed primarily for standard skid steers and general contractor screening applications.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"1972\" data-end=\"2121\"\u003e\u003cstrong data-start=\"1972\" data-end=\"1981\"\u003eMama:\u003c\/strong\u003e Choose the Mama for standard-size backhoes, larger tractors, large skid steers, and jobs that require more screening capacity than the Cub.\u003c\/p\u003e\n\u003cp dir=\"auto\" data-start=\"2123\" data-end=\"2253\"\u003e\u003cstrong data-start=\"2123\" data-end=\"2132\"\u003ePapa:\u003c\/strong\u003e Designed for full-size loaders and heavy-duty aggregate, riprap, large-rock, and high-production screening applications.\u003c\/p\u003e\n\u003ch3 data-section-id=\"19zqy0x\" dir=\"auto\" data-start=\"2255\" data-end=\"2267\"\u003eFeatures\u003c\/h3\u003e\n\u003cul data-start=\"2269\" data-end=\"3855\"\u003e\n\u003cli data-section-id=\"rtt435\" data-start=\"2269\" data-end=\"2412\"\u003e\n\u003cstrong data-start=\"2271\" data-end=\"2303\"\u003eHeavy-Duty Solid Steel Bars:\u003c\/strong\u003e Uses solid steel screening bars for high impact strength, long service life, and consistent screen openings.\u003c\/li\u003e\n\u003cli data-section-id=\"d1jssb\" data-start=\"2414\" data-end=\"2550\"\u003e\n\u003cstrong data-start=\"2416\" data-end=\"2450\"\u003eDesigned for Larger Equipment:\u003c\/strong\u003e Built primarily for standard-size backhoes and suitable larger tractors and construction equipment.\u003c\/li\u003e\n\u003cli data-section-id=\"30kp5r\" data-start=\"2552\" data-end=\"2692\"\u003e\n\u003cstrong data-start=\"2554\" data-end=\"2582\"\u003e3.4 Cubic Yard Capacity:\u003c\/strong\u003e Provides substantially more screening area than smaller Grizzly models for higher-volume material processing.\u003c\/li\u003e\n\u003cli data-section-id=\"mx73jc\" data-start=\"2694\" data-end=\"2853\"\u003e\n\u003cstrong data-start=\"2696\" data-end=\"2730\"\u003eEfficient Material Separation:\u003c\/strong\u003e Separates rocks, oversized aggregate, debris, and unwanted material from usable soil, gravel, and other screened material.\u003c\/li\u003e\n\u003cli data-section-id=\"1adptkd\" data-start=\"2855\" data-end=\"2990\"\u003e\n\u003cstrong data-start=\"2857\" data-end=\"2888\"\u003eAnti-Clogging Construction:\u003c\/strong\u003e Square-welded bars help resist deflection and reduce funneling and material jamming during operation.\u003c\/li\u003e\n\u003cli data-section-id=\"15rkntx\" data-start=\"2992\" data-end=\"3129\"\u003e\n\u003cstrong data-start=\"2994\" data-end=\"3026\"\u003eConfigurable Screen Spacing:\u003c\/strong\u003e Available with 3-inch, 4-inch, 5-inch, or 6-inch screening-bar spacing to suit different applications.\u003c\/li\u003e\n\u003cli data-section-id=\"swu5wa\" data-start=\"3131\" data-end=\"3259\"\u003e\n\u003cstrong data-start=\"3133\" data-end=\"3161\"\u003eOptional Fine Screening:\u003c\/strong\u003e Compatible with Bear Iron Works removable screens for more precise aggregate and soil separation.\u003c\/li\u003e\n\u003cli data-section-id=\"1fg4c2o\" data-start=\"3261\" data-end=\"3445\"\u003e\n\u003cstrong data-start=\"3263\" data-end=\"3301\"\u003eTool-Free Removable Screen System:\u003c\/strong\u003e Optional screens use a hook-style system that can be installed or removed using suitable equipment rather than traditional bolts and fasteners.\u003c\/li\u003e\n\u003cli data-section-id=\"12ot79m\" data-start=\"3447\" data-end=\"3581\"\u003e\n\u003cstrong data-start=\"3449\" data-end=\"3478\"\u003eOptional Vibrator System:\u003c\/strong\u003e A vibrator can be added to improve material movement when screening wet, fine, or moisture-heavy soil.\u003c\/li\u003e\n\u003cli data-section-id=\"1fm8tta\" data-start=\"3583\" data-end=\"3727\"\u003e\n\u003cstrong data-start=\"3585\" data-end=\"3609\"\u003eJobsite Versatility:\u003c\/strong\u003e Suitable for construction, excavation, landscaping, site preparation, aggregate processing, and material reclamation.\u003c\/li\u003e\n\u003cli data-section-id=\"gitjze\" data-start=\"3729\" data-end=\"3855\"\u003e\n\u003cstrong data-start=\"3731\" data-end=\"3771\"\u003eSimple Equipment-Assisted Operation:\u003c\/strong\u003e No engine, hydraulics, or electrical power is required for the base Grizzly screen.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"5t7ttf\" dir=\"auto\" data-start=\"3857\" data-end=\"3877\"\u003ePackage Includes\u003c\/h3\u003e\n\u003cul data-start=\"3879\" data-end=\"4015\"\u003e\n\u003cli data-section-id=\"171z2gy\" data-start=\"3879\" data-end=\"3925\"\u003e1 × Bear Iron Works Mama Grizzly Rock Screen\u003c\/li\u003e\n\u003cli data-section-id=\"1dr2f4c\" data-start=\"3926\" data-end=\"3951\"\u003eSelected screen spacing\u003c\/li\u003e\n\u003cli data-section-id=\"1gdn16o\" data-start=\"3952\" data-end=\"3986\"\u003eHeavy-duty steel screening frame\u003c\/li\u003e\n\u003cli data-section-id=\"14u57g0\" data-start=\"3987\" data-end=\"4015\"\u003eSolid steel screening bars\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\" data-start=\"4017\" data-end=\"4196\"\u003eOptional removable screens, vibrator systems, wings, bang bars, D-rings, custom colors, and other factory upgrades are sold separately unless specifically selected with the order.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1yl5694\" dir=\"auto\" data-start=\"4198\" data-end=\"4216\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv dir=\"auto\" class=\"group TyagGW_tableContainer TyagGW_tableContainerWithTableOfContents\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003ctable data-start=\"4218\" data-end=\"5004\" dir=\"auto\" class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead data-start=\"4218\" data-end=\"4242\"\u003e\n\u003ctr data-start=\"4218\" data-end=\"4242\"\u003e\n\u003cth data-start=\"4218\" data-end=\"4234\" data-col-size=\"sm\" class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003cth data-start=\"4234\" data-end=\"4242\" data-col-size=\"md\" class=\"last:pe-10\"\u003eMama\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody data-start=\"4253\" data-end=\"5004\"\u003e\n\u003ctr data-start=\"4253\" data-end=\"4291\"\u003e\n\u003ctd data-start=\"4253\" data-end=\"4268\" data-col-size=\"sm\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd data-start=\"4268\" data-end=\"4291\" data-col-size=\"md\"\u003eGrizzly Rock Screen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4292\" data-end=\"4308\"\u003e\n\u003ctd data-start=\"4292\" data-end=\"4300\" data-col-size=\"sm\"\u003eModel\u003c\/td\u003e\n\u003ctd data-start=\"4300\" data-end=\"4308\" data-col-size=\"md\"\u003eMama\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4309\" data-end=\"4346\"\u003e\n\u003ctd data-start=\"4309\" data-end=\"4327\" data-col-size=\"sm\"\u003eActual Capacity\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"4327\" data-end=\"4346\"\u003e3.4 Cubic Yards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4347\" data-end=\"4385\"\u003e\n\u003ctd data-start=\"4347\" data-end=\"4373\" data-col-size=\"sm\"\u003eStandard Screen Spacing\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"4373\" data-end=\"4385\"\u003e3 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4386\" data-end=\"4431\"\u003e\n\u003ctd data-start=\"4386\" data-end=\"4413\" data-col-size=\"sm\"\u003eAvailable Screen Spacing\u003c\/td\u003e\n\u003ctd data-start=\"4413\" data-end=\"4431\" data-col-size=\"md\"\u003e3\", 4\", 5\", 6\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4432\" data-end=\"4463\"\u003e\n\u003ctd data-start=\"4432\" data-end=\"4449\" data-col-size=\"sm\"\u003eInternal Width\u003c\/td\u003e\n\u003ctd data-start=\"4449\" data-end=\"4463\" data-col-size=\"md\"\u003e118 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4464\" data-end=\"4495\"\u003e\n\u003ctd data-start=\"4464\" data-end=\"4482\" data-col-size=\"sm\"\u003eInternal Length\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"4482\" data-end=\"4495\"\u003e50 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4496\" data-end=\"4527\"\u003e\n\u003ctd data-start=\"4496\" data-end=\"4513\" data-col-size=\"sm\"\u003eExternal Width\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"4513\" data-end=\"4527\"\u003e123 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4528\" data-end=\"4561\"\u003e\n\u003ctd data-start=\"4528\" data-end=\"4546\" data-col-size=\"sm\"\u003eExternal Length\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"4546\" data-end=\"4561\"\u003e52.5 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4562\" data-end=\"4595\"\u003e\n\u003ctd data-start=\"4562\" data-end=\"4580\" data-col-size=\"sm\"\u003eExternal Height\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"4580\" data-end=\"4595\"\u003e78.5 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4596\" data-end=\"4626\"\u003e\n\u003ctd data-start=\"4596\" data-end=\"4613\" data-col-size=\"sm\"\u003eApprox. Weight\u003c\/td\u003e\n\u003ctd data-start=\"4613\" data-end=\"4626\" data-col-size=\"md\"\u003e1,300 LBS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4627\" data-end=\"4658\"\u003e\n\u003ctd data-start=\"4627\" data-end=\"4647\" data-col-size=\"sm\"\u003ePrimary Equipment\u003c\/td\u003e\n\u003ctd data-start=\"4647\" data-end=\"4658\" data-col-size=\"md\"\u003eBackhoe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4659\" data-end=\"4712\"\u003e\n\u003ctd data-start=\"4659\" data-end=\"4686\" data-col-size=\"sm\"\u003eRecommended Backhoe Size\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"4686\" data-end=\"4712\"\u003eStandard-Size Backhoes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4713\" data-end=\"4756\"\u003e\n\u003ctd data-start=\"4713\" data-end=\"4735\" data-col-size=\"sm\"\u003eReference Equipment\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"4735\" data-end=\"4756\"\u003eCAT 415 – CAT 450\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4757\" data-end=\"4798\"\u003e\n\u003ctd data-start=\"4757\" data-end=\"4779\" data-col-size=\"sm\"\u003eSecondary Equipment\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"4779\" data-end=\"4798\"\u003eUtility Tractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4799\" data-end=\"4842\"\u003e\n\u003ctd data-start=\"4799\" data-end=\"4826\" data-col-size=\"sm\"\u003eRecommended Tractor Size\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"4826\" data-end=\"4842\"\u003e75 HP and Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4843\" data-end=\"4918\"\u003e\n\u003ctd data-start=\"4843\" data-end=\"4862\" data-col-size=\"sm\"\u003eTractor Examples\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"4862\" data-end=\"4918\"\u003eKubota M4 Series and Up \/ John Deere 5 Series and Up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4919\" data-end=\"4952\"\u003e\n\u003ctd data-start=\"4919\" data-end=\"4940\" data-col-size=\"sm\"\u003eBase Configuration\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"4940\" data-end=\"4952\"\u003eStandard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4953\" data-end=\"4976\"\u003e\n\u003ctd data-start=\"4953\" data-end=\"4966\" data-col-size=\"sm\"\u003eBase Price\u003c\/td\u003e\n\u003ctd data-start=\"4966\" data-end=\"4976\" data-col-size=\"md\"\u003e$6,500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-start=\"4977\" data-end=\"5004\"\u003e\n\u003ctd data-start=\"4977\" data-end=\"4994\" data-col-size=\"sm\"\u003eShipping Class\u003c\/td\u003e\n\u003ctd data-col-size=\"md\" data-start=\"4994\" data-end=\"5004\"\u003eTier 3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv dir=\"auto\" class=\"group TyagGW_tableContainer TyagGW_tableContainerWithTableOfContents\"\u003e\n\u003cdiv class=\"TyagGW_tableWrapper flex flex-col-reverse w-fit\" tabindex=\"-1\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\n#capacity_info {\n  display: grid;\n  grid-template-columns: 1fr 1fr;\n  border-collapse: collapse;\n  color: white;\n  margin-bottom: 20px;\n  width: 480px;\n  max-width: 100%;\n}\n#capacity_info \u003e div {\n  display: contents;\n}\n#capacity_info \u003e div \u003e div {\n  border: 1px solid white;\n  padding: 8px;\n  font-size: 13px;\n}\n\u003c\/style\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Bear Iron Works","offers":[{"title":"3 Inches \/ Blue","offer_id":50522059702491,"sku":"GM-7A43BLU-S","price":6500.0,"currency_code":"USD","in_stock":true},{"title":"3 Inches \/ Red","offer_id":50522059735259,"sku":"GM-7A43RED-S","price":6500.0,"currency_code":"USD","in_stock":true},{"title":"4 Inches \/ Blue","offer_id":50522059768027,"sku":"GM-7A44BLU-S","price":6500.0,"currency_code":"USD","in_stock":true},{"title":"4 Inches \/ Red","offer_id":50522059800795,"sku":"GM-7A44RED-S","price":6500.0,"currency_code":"USD","in_stock":true},{"title":"5 Inches \/ Blue","offer_id":50522059833563,"sku":"GM-7A45BLU-S","price":6500.0,"currency_code":"USD","in_stock":true},{"title":"5 Inches \/ Red","offer_id":50522059866331,"sku":"GM-7A45RED-S","price":6500.0,"currency_code":"USD","in_stock":true},{"title":"6 Inches \/ Blue","offer_id":50522059899099,"sku":"GM-7A46BLU-S","price":6500.0,"currency_code":"USD","in_stock":true},{"title":"6 Inches \/ Red","offer_id":50522059931867,"sku":"GM-7A46RED-S","price":6500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/2339\/2475\/files\/grizzly-mama-angled-hero-bear-iron.png?v=1790464883","url":"https:\/\/www.thecontractortools.com\/products\/mama-rock-screen","provider":"The Contractor Tools","version":"1.0","type":"link"}