{"id":703,"date":"2026-01-14T01:04:49","date_gmt":"2026-01-14T01:04:49","guid":{"rendered":"https:\/\/roller-chain-manufacturers.com\/?post_type=product&p=703"},"modified":"2026-08-25T09:28:14","modified_gmt":"2026-08-25T09:28:14","slug":"corrente-de-rolos-superior-de-borracha-20b-g1","status":"publish","type":"product","link":"https:\/\/roller-chain-manufacturers.com\/pt\/produto\/corrente-de-rolos-superior-de-borracha-20b-g1\/","title":{"rendered":"Corrente de rolos com topo de borracha 20B-G1"},"content":{"rendered":"

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20B-G1 Rubber Top Chain \/ Rubber Top Roller Chain<\/h2>\n

\"CorrenteThe 20B-G1 Rubber Top Chain is a conveyor-grade roller chain with a vulcanized rubber pad bonded to each link plate. It conforms to ISO 606 \/ DIN 8187 standards for the 20B series, with a 31.75 mm (1-1\/4 inch) pitch and a single-strand (G1) row of 19.05 mm diameter rollers. The rubber top surface grips conveyed products firmly, eliminating slippage on inclined runs and protecting sensitive workpiece surfaces from metal contact marks.<\/p>\n

This chain is widely used in food processing lines, packaging machinery, woodworking conveyor systems, glass-sheet transfer tables, and plywood production plants \u2014 anywhere a non-marring, slip-resistant conveying surface is required. The rubber pad is available in NBR (nitrile butadiene rubber, oil-resistant) or NR (natural rubber, high-grip), with Shore hardness options of 65\u201375 or 75\u201385 depending on load and surface requirements.<\/p>\n

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20B-G1 Rubber Top Chain \u2014 Dimensions<\/h3>\n
\n\n\n\n\n\n
N\u00famero da corrente<\/th>\nTom
\nP (mm)<\/th>\n		Roller Dia.
\nd1 max (mm)<\/th>\n		Largura interna
\nb1 min (mm)<\/th>\n		Pin Dia.
\nd2 max (mm)<\/th>\n		Comprimento do pino
\nL max (mm)<\/th>\n		Plate Ht.
\nh2 max (mm)<\/th>\n		Pad Width
\nA (mm)<\/th>\n		Pad Length
\nB (mm)<\/th>\n		Pad Height
\nH (mm)<\/th>\n		Plate Thick.
\nT (mm)<\/th>\n		Resist\u00eancia \u00e0 trac\u00e7\u00e3o
\nQ min (kN \/ lbf)<\/th>\n		Peso
\nq (kg\/m)<\/th>\n<\/tr>\n<\/thead>\n
20B-G1<\/td>\n31.750<\/td>\n19.05<\/td>\n19.56<\/td>\n10.19<\/td>\n48.0<\/td>\n26.40<\/td>\n36.00<\/td>\n57.00<\/td>\n27.0<\/td>\n3.50<\/td>\n85.0 \/ 19,318<\/td>\n6.19<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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20B-G1 Rubber Top Chain \u2014 Specifications<\/h3>\n

\"Dimens\u00f5es<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Nome do produto<\/td>\nCorrente com topo de borracha 20B-G1 (Corrente de rolos com topo de borracha)<\/td>\n<\/tr>\n
Padr\u00e3o<\/td>\nISO 606 \/ DIN 8187 \/ Customer Drawing<\/td>\n<\/tr>\n
Material da corrente<\/td>\nAlloy steel (45Mn, 42CrMo, 20CrMo) \u00b7 Stainless steel (SS304, SS316)<\/td>\n<\/tr>\n
Rubber Material<\/td>\nNBR (oil-resistant) \u00b7 NR (natural rubber, high-grip)<\/td>\n<\/tr>\n
Rubber Hardness<\/td>\nShore A 65\u201375 \u00b7 Shore A 75\u201385<\/td>\n<\/tr>\n
Tratamento de superf\u00edcie<\/td>\nShot peening \u00b7 Blackening \u00b7 Bluing \u00b7 Zinc-plated \u00b7 Nickel-plated<\/td>\n<\/tr>\n
Characteristics<\/td>\nOil-resistant \u00b7 Heat-resistant \u00b7 Non-marring \u00b7 Anti-slip<\/td>\n<\/tr>\n
Available Sizes<\/td>\n20B-G1 (simplex) \u00b7 20B-G2 (duplex)<\/td>\n<\/tr>\n
Embalagem<\/td>\nWooden case \/ pallet \/ container \u2014 or per customer requirement<\/td>\n<\/tr>\n
Certificado<\/td>\nISO 9001:2015<\/td>\n<\/tr>\n
Lead Time<\/td>\nSample orders: ~20 days \u00b7 Standard orders: ~45 days<\/td>\n<\/tr>\n
OEM \/ Custom<\/td>\nAccepted \u2014 custom roller diameter, rubber compound, pad height, and attachment holes available<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Key Features of the 20B-G1 Rubber Top Chain<\/h3>\n
    \n
  1. Non-marring rubber surface.<\/strong> The vulcanized rubber pad provides a soft, scratch-free contact face. Finished wood panels, float glass, laminate boards, and polished metal parts pass through without surface damage \u2014 critical in woodworking lines and glass-transfer applications.<\/li>\n
  2. High anti-slip grip.<\/strong> The rubber compound maintains firm contact with the conveyed load, preventing product shift on inclined or declining conveyor runs up to approximately 30\u00b0. This eliminates the need for additional hold-down guides in many layouts.<\/li>\n
  3. Heat-treated alloy steel chain body.<\/strong> All inner plates, outer plates, rollers, and pins are manufactured from heat-treated alloy steel with hardness controlled to tight tolerances. The minimum tensile strength of 85.0 kN (19,318 lbf) matches the standard ISO 20B specification.<\/li>\n
  4. Dual rubber compound options.<\/strong> NBR (nitrile butadiene rubber) is chosen for environments with oil mist or lubricant exposure. NR (natural rubber) delivers higher surface grip for dry-product conveying. Shore hardness is specified at the order stage \u2014 65\u201375 for moderate-load applications, 75\u201385 for heavy-load or high-speed runs.<\/li>\n
  5. Compatible with standard 20B sprockets.<\/strong> The chain runs on any ISO-compliant 20B sprocket. Rubber-coated sprockets (polyurethane or rubber insert type) are recommended to further reduce noise and vibration and extend pad life.<\/li>\n
  6. Custom pad geometry and attachment options.<\/strong> Pad width, length, and height can be modified to customer drawings. Attachment plates (K1, K2, extended inner plates) can be incorporated at specified pitches for pusher or carrier fixtures.<\/li>\n<\/ol>\n

    <\/p>\n

    Typical Applications<\/h3>\n
    \n
    \n

    Woodworking & Panel Conveyors<\/p>\n

    Transporting planed timber, MDF, particleboard, and veneer sheets between saws, planers, and finishing stations without scratching the surface.<\/p>\n<\/div>\n

    \n

    Glass & Ceramic Transfer Lines<\/p>\n

    Carrying float glass sheets, ceramic tiles, and architectural panels where any metal-to-surface contact would cause unacceptable chips or cracks.<\/p>\n<\/div>\n

    \n

    Packaging Machinery<\/p>\n

    Infeed and outfeed sections of cartoning machines, case sealers, and shrink-wrap tunnels where products must be positioned accurately without slipping.<\/p>\n<\/div>\n

    \n

    Food Processing Lines<\/p>\n

    Conveying packaged goods, trays, and containers on lines where grip and hygiene matter. NBR compound is selected for resistance to food-grade oils and cleaning agents.<\/p>\n<\/div>\n

    \n

    Plywood & Laminate Plants<\/p>\n

    Moving glued laminate panels and plywood boards through press lines, edge-trimmers, and stacking stations without surface indentation.<\/p>\n<\/div>\n

    \n

    Machining & Grinding Lines<\/p>\n

    Transporting ground or polished metal parts between stations where rubber contact prevents micro-scratches that would be visible on finished surfaces.<\/p>\n<\/div>\n<\/div>\n

    <\/p>\n

    Rubber Compound Selection Guide<\/h3>\n
    \n\n\n\n\n\n\n
    Rubber Type<\/th>\nShore Hardness<\/th>\nRecommended Environment<\/th>\nMax. Continuous Temp.<\/th>\n<\/tr>\n<\/thead>\n
    NBR<\/td>\n65\u201375 or 75\u201385<\/td>\nOil mist, lubricant exposure, food-grade oils, coolants<\/td>\n+100 \u00b0C<\/td>\n<\/tr>\n
    NR<\/td>\n65\u201375 or 75\u201385<\/td>\nDry product conveying, maximum surface grip, general purpose<\/td>\n+80 \u00b0C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    <\/p>\n

    Matching Sprockets for 20B-G1 Rubber Top Chain<\/h3>\n

    Standard ISO 20B sprockets (31.75 mm pitch, 19.05 mm roller seating diameter) fit this chain directly. For noise-sensitive or vibration-critical installations, rubber-insert or polyurethane-coated sprockets are recommended. The elastic material between the tooth and the roller absorbs impact at engagement, reducing peak stress on both the rubber pad and the chain joints.<\/p>\n