{"id":2043,"date":"2026-04-08T05:51:09","date_gmt":"2026-04-08T05:51:09","guid":{"rendered":"https:\/\/drivensprockets.top\/product\/20b-metric-roller-chain-sprocket\/"},"modified":"2026-04-08T05:51:09","modified_gmt":"2026-04-08T05:51:09","slug":"20b-metric-roller-chain-sprocket","status":"publish","type":"product","link":"https:\/\/drivensprockets.top\/hi\/product\/20b-metric-roller-chain-sprocket\/","title":{"rendered":"20B Metric Roller Chain Sprocket"},"content":{"rendered":"
\n

20B Metric Roller Chain Sprocket \u2014 Extra-Heavy-Duty Industrial Drives<\/h2>\n

The 20B at 31.75mm (1-1\/4 inch) pitch is designed for the most demanding power transmission applications in mining, cement, steel, and heavy materials handling. Where maximum single-chain load capacity is required at moderate speeds, 20B delivers. Available in simplex (20B-1), duplex (20B-2), and triplex (20B-3) from 9 to 114 teeth.<\/p>\n

\"20B<\/p>\n

Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\n20B-1<\/th>\n20B-2<\/th>\n20B-3<\/th>\n<\/tr>\n<\/thead>\n
Pitch<\/td>\n31.75 mm (1-1\/4″)<\/td>\n31.75 mm<\/td>\n31.75 mm<\/td>\n<\/tr>\n
Roller Diameter<\/td>\n19.56 mm<\/td>\n19.56 mm<\/td>\n19.56 mm<\/td>\n<\/tr>\n
Internal Width<\/td>\n19.56 mm<\/td>\n19.56 mm<\/td>\n19.56 mm<\/td>\n<\/tr>\n
Tooth Count<\/td>\n9 – 114T<\/td>\n9 – 114T<\/td>\n9 – 114T<\/td>\n<\/tr>\n
Material<\/td>\nC45 \/ 4140 \/ SS316<\/td>\nC45 \/ 4140<\/td>\nC45 \/ 4140<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Advantages<\/h2>\n

1.<\/strong> Maximum ISO metric single-strand capacity \u2014 handles extreme torque at low-to-moderate speeds without multi-strand complexity.<\/p>\n

2.<\/strong> Induction hardened HRC 40-50 \u2014 extends tooth life 2-3x in abrasive environments (iron ore, coal, cement clinker).<\/p>\n

3.<\/strong> 4140 alloy steel option \u2014 655-900 MPa tensile for shock loading in crusher and elevator applications.<\/p>\n

4.<\/strong> Split hub and segmental rim available \u2014 field replacement without chain removal on large conveyors and elevators.<\/p>\n

5.<\/strong> CNC precision manufacturing \u2014 teeth hobbed to AGMA tolerances, bore to 0.025mm TIR, keyway to DIN 6885.<\/p>\n

6.<\/strong> Full traceability \u2014 EN 10204 Type 3.1 certificates. ISO 9001:2015 certified facility.<\/p>\n

Applications<\/h2>\n
\n
\"20B<\/p>\n

Mining & Cement:<\/strong> Primary conveyor head drives, kiln chain mechanisms, clinker cooler drives requiring maximum torque at low speed.<\/p>\n<\/div>\n

\"20B<\/p>\n

Bulk Handling & Steel:<\/strong> Bucket elevators, pan conveyors, and rolling mill auxiliary drives in steel and mineral processing plants.<\/p>\n<\/div>\n<\/div>\n

Reviews<\/h2>\n
\n
\n

★★★★★<\/p>\n

“20B triplex on our primary conveyor is performing under extreme Pilbara heat. 4140 steel was the right choice.”<\/p>\n

Reliability Engineer, Port Hedland, Australia<\/p>\n<\/div>\n

\n

★★★★★<\/p>\n

“Heavy-duty 20B for our cement kiln chain drive. Running 10 months without issues. Documentation complete.”<\/p>\n

Plant Manager, Istanbul, Turkey<\/p>\n<\/div>\n

\n

★★★★☆<\/p>\n

“Split 20B sprocket saved us from pulling 40 metres of chain during shutdown. Installed in 2 hours.”<\/p>\n

Maintenance Supervisor, Mackay, Australia<\/p>\n<\/div>\n

\n

★★★★★<\/p>\n

“QD bushed 20B for our steel mill pan conveyor. Rapid installation, running true at speed.”<\/p>\n

Engineering Manager, Pohang, South Korea<\/p>\n<\/div>\n

\n

★★★★★<\/p>\n

“Consistent quality from Ever-Power. 20B sprockets used across our mining fleet conveyors.”<\/p>\n

Procurement Officer, Lima, Peru<\/p>\n<\/div>\n<\/div>\n

FAQ<\/h2>\n
\n20B vs ANSI #100?<\/summary>\n
Different standards despite identical pitch. Roller diameters and widths differ. Not interchangeable.<\/div>\n<\/details>\n
\nSegmental rim available?<\/summary>\n
Yes. Bolt-on rim sections for large elevators and conveyors. Replace rim without removing hub from shaft.<\/div>\n<\/details>\n
\nMax bore?<\/summary>\n
Up to 100mm+ on larger tooth counts. QD bushings extend bore range further. Contact us with your shaft spec.<\/div>\n<\/details>\n
\nCan I get 4140 with material cert?<\/summary>\n
Yes. EN 10204 Type 3.1 provided with every 4140 alloy steel sprocket order.<\/div>\n<\/details>\n
\nMOQ for custom bore?<\/summary>\n
One piece. We machine bores and keyways on individual units.<\/div>\n<\/details>\n

Related Products<\/h2>\n
\n
\"chain\"<\/p>\n

20B Chains<\/p>\n<\/div>\n

\"coupling\"<\/p>\n

Couplings<\/p>\n<\/div>\n

\"bushing\"<\/p>\n

QD Bushings<\/p>\n<\/div>\n<\/div>\n

Install:<\/strong> Match 20B chain. Mount, key, torque. Align within 0.5mm\/300mm. Oil bath lubrication recommended for continuous heavy-duty drives.<\/p>\n

Certifications:<\/strong> ✅ ISO 9001:2015 ✅ ISO\/R 606 ✅ DIN 8187 ✅ EN 10204<\/p>\n

Ever-Power:<\/strong> 15+ years, 3,200+ SKUs, ISO 9001, CNC hobbing, induction hardening, OEM capability for Australian industry.<\/p>\n

\n

Request 20B Quotation<\/h3>\n

Contact Us<\/a> All Sprockets<\/a>\n<\/div>\n

About Us<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

20B metric roller chain sprocket with 31.75mm (1-1\/4 inch) pitch for heavy-duty and extra-heavy-duty industrial drives. Designed for large conveyor systems, crusher drives, kiln mechanisms, and bulk materials handling. C45 or 4140 alloy steel with induction-hardened teeth. Simplex, duplex, triplex. ISO\/R 606 compliant.<\/p>","protected":false},"featured_media":1986,"comment_status":"closed","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[3007,3006],"product_tag":[3033,3034,3036,3035,3009],"class_list":{"0":"post-2043","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-iso-metric-bs-sprockets","7":"product_cat-sprockets","8":"product_tag-20b-sprocket","9":"product_tag-31-75mm-pitch-sprocket","10":"product_tag-extra-heavy-duty-industrial-sprocket","11":"product_tag-iso-20b-sprocket","12":"product_tag-metric-roller-chain-sprocket","14":"first","15":"instock","16":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/drivensprockets.top\/hi\/wp-json\/wp\/v2\/product\/2043","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/drivensprockets.top\/hi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/drivensprockets.top\/hi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/drivensprockets.top\/hi\/wp-json\/wp\/v2\/comments?post=2043"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/drivensprockets.top\/hi\/wp-json\/wp\/v2\/media\/1986"}],"wp:attachment":[{"href":"https:\/\/drivensprockets.top\/hi\/wp-json\/wp\/v2\/media?parent=2043"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/drivensprockets.top\/hi\/wp-json\/wp\/v2\/product_brand?post=2043"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/drivensprockets.top\/hi\/wp-json\/wp\/v2\/product_cat?post=2043"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/drivensprockets.top\/hi\/wp-json\/wp\/v2\/product_tag?post=2043"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}