{"id":2053,"date":"2026-04-08T05:51:25","date_gmt":"2026-04-08T05:51:25","guid":{"rendered":"https:\/\/drivensprockets.top\/product\/ansi-120-roller-chain-sprocket\/"},"modified":"2026-04-08T05:51:25","modified_gmt":"2026-04-08T05:51:25","slug":"ansi-120-roller-chain-sprocket","status":"publish","type":"product","link":"https:\/\/drivensprockets.top\/nn\/product\/ansi-120-roller-chain-sprocket\/","title":{"rendered":"ANSI #120 Roller Chain Sprocket"},"content":{"rendered":"
\n

ANSI #120 Roller Chain Sprocket \u2014 Extreme Heavy-Duty 1-1\/2″ Pitch<\/h2>\n

The #120 at 1-1\/2 inch (38.1mm) pitch is reserved for extreme load applications. Mining overland conveyors, steel mill primary drives, heavy dredging chain systems, and large port ship-loading mechanisms. Primarily simplex (#120) and duplex (#120-2), 9 to 76 teeth. 4140 alloy steel is the standard material for this pitch size.<\/p>\n

\"#120<\/p>\n

Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\n#120<\/th>\n#120-2<\/th>\n<\/tr>\n<\/thead>\n
Pitch<\/td>\n1-1\/2″ (38.1mm)<\/td>\n38.1mm<\/td>\n<\/tr>\n
Roller<\/td>\n0.875″ (22.23mm)<\/td>\n22.23mm<\/td>\n<\/tr>\n
Width<\/td>\n1″ (25.4mm)<\/td>\n25.4mm<\/td>\n<\/tr>\n
Teeth<\/td>\n9 – 76T<\/td>\n9 – 57T<\/td>\n<\/tr>\n
Material<\/td>\n4140 (std) \/ 1045<\/td>\n4140<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Features<\/h2>\n

◆ 4140 alloy steel standard \u2014 655-900 MPa for extreme mining and steel mill environments<\/p>\n

◆ Induction hardened HRC 40-50 with controlled depth for shock absorption<\/p>\n

◆ Split hub and segmental rim for the largest field replacement requirements<\/p>\n

◆ QD bushed for bores up to 120mm+ on larger tooth counts<\/p>\n

◆ CNC hobbed teeth, precision bore, broached keyway to ANSI\/DIN standards<\/p>\n

◆ Full EN 10204 Type 3.1 traceability, ISO 9001:2015 manufacturing<\/p>\n

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

“#120 on our overland mining conveyor. 4140 steel running under extreme heat and abrasion for 14 months.”<\/em> ★★★★★ \u2014 Reliability Eng., Pilbara, Australia<\/p>\n<\/div>\n

\n

“Split #120 for dredger chain. Installed without chain pull. Excellent fit.”<\/em> ★★★★★ \u2014 Marine Eng., Darwin, Australia<\/p>\n<\/div>\n

\n

“Heavy-duty #120 duplex for our steel mill. Custom bore, material cert, inspection report all provided.”<\/em> ★★★★☆ \u2014 Rolling Mill Mgr, Mumbai, India<\/p>\n<\/div>\n

\n

“Professional heavy-duty sprocket supply. Documentation meets our mining audit requirements.”<\/em> ★★★★★ \u2014 Procurement, BHP site, Australia<\/p>\n<\/div>\n

\n

“QD bushed #120 for port equipment. Rapid installation on 110mm shaft. Running true.”<\/em> ★★★★★ \u2014 Port Ops, Fremantle, Australia<\/p>\n<\/div>\n<\/div>\n

FAQ<\/h2>\n
\n#120 vs ISO 24B?<\/summary>\n
Both 38.1mm pitch but different roller and width specifications. Not interchangeable.<\/div>\n<\/details>\n
\nTriplex available?<\/summary>\n
#120 triplex can be manufactured on request for specific tooth counts. Contact us with requirements.<\/div>\n<\/details>\n
\nMax bore?<\/summary>\n
Up to 120mm+ with QD bushings. Plain bore to ~100mm.<\/div>\n<\/details>\n
\nGalvanised available?<\/summary>\n
Yes. Hot-dip galvanise for outdoor and coastal applications.<\/div>\n<\/details>\n
\nMOQ?<\/summary>\n
One piece with full 4140 cert and inspection report.<\/div>\n<\/details>\n
\n
\"chain\"<\/p>\n

#120 Chains<\/p>\n<\/div>\n

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

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

✅ ISO 9001:2015 ✅ ANSI B29.1 ✅ EN 10204 Type 3.1<\/p>\n

Ever-Power Australia: 15+ years, CNC manufacturing, 4140 alloy capability, engineering support.<\/p>\n

\n

Get #120 Quote<\/h3>\n

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

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

ANSI #120 roller chain sprocket at 1-1\/2 inch (38.1mm) pitch for extreme heavy-duty drives. Used in large mining operations, steel mills, heavy port equipment, and dredging machinery. 4140 alloy steel with induction-hardened teeth. Simplex and duplex. ANSI B29.1.<\/p>","protected":false},"featured_media":1989,"comment_status":"closed","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[3049,3006],"product_tag":[3077,3078,3076,3040,3079],"class_list":{"0":"post-2053","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ansi-standard-sprockets","7":"product_cat-sprockets","8":"product_tag-120-roller-chain-sprocket","9":"product_tag-1-1-2-inch-pitch-sprocket","10":"product_tag-ansi-120-sprocket","11":"product_tag-extreme-heavy-duty-sprocket","12":"product_tag-large-mining-sprocket","14":"first","15":"instock","16":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/drivensprockets.top\/nn\/wp-json\/wp\/v2\/product\/2053","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/drivensprockets.top\/nn\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/drivensprockets.top\/nn\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/drivensprockets.top\/nn\/wp-json\/wp\/v2\/comments?post=2053"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/drivensprockets.top\/nn\/wp-json\/wp\/v2\/media\/1989"}],"wp:attachment":[{"href":"https:\/\/drivensprockets.top\/nn\/wp-json\/wp\/v2\/media?parent=2053"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/drivensprockets.top\/nn\/wp-json\/wp\/v2\/product_brand?post=2053"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/drivensprockets.top\/nn\/wp-json\/wp\/v2\/product_cat?post=2053"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/drivensprockets.top\/nn\/wp-json\/wp\/v2\/product_tag?post=2053"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}