{"id":2038,"date":"2026-04-08T05:50:47","date_gmt":"2026-04-08T05:50:47","guid":{"rendered":"https:\/\/drivensprockets.top\/product\/08b-metric-roller-chain-sprocket\/"},"modified":"2026-04-08T05:50:47","modified_gmt":"2026-04-08T05:50:47","slug":"08b-metric-roller-chain-sprocket","status":"publish","type":"product","link":"https:\/\/drivensprockets.top\/de\/product\/08b-metric-roller-chain-sprocket\/","title":{"rendered":"08B Metric Roller Chain Sprocket"},"content":{"rendered":"
\n

08B Metric Roller Chain Sprocket \u2014 Medium-Duty Industrial Power Transmission<\/h2>\n

The 08B sprocket operates at 12.7mm (1\/2 inch) pitch and is one of the most widely specified metric roller chain sprockets in industrial applications. Designed for conveyor systems, agricultural equipment, packaging machinery, and general manufacturing drives where moderate loads and speeds are the norm. We supply 08B sprockets in simplex (08B-1), duplex (08B-2), and triplex (08B-3) configurations with tooth counts from 9 to 114.<\/p>\n

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\"08B<\/div>\n
\"08B<\/div>\n<\/div>\n

Technical Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\n08B-1<\/th>\n08B-2<\/th>\n08B-3<\/th>\n<\/tr>\n<\/thead>\n
Pitch<\/td>\n12.7 mm (1\/2″)<\/td>\n12.7 mm<\/td>\n12.7 mm<\/td>\n<\/tr>\n
Roller Diameter<\/td>\n8.51 mm<\/td>\n8.51 mm<\/td>\n8.51 mm<\/td>\n<\/tr>\n
Internal Width<\/td>\n7.75 mm<\/td>\n7.75 mm<\/td>\n7.75 mm<\/td>\n<\/tr>\n
Tooth Count Range<\/td>\n9 – 114T<\/td>\n9 – 114T<\/td>\n9 – 114T<\/td>\n<\/tr>\n
Material<\/td>\nC45 Steel<\/td>\nC45 Steel<\/td>\nC45 Steel<\/td>\n<\/tr>\n
Standard<\/td>\nISO\/R 606, DIN 8187<\/td>\nISO\/R 606<\/td>\nISO\/R 606<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

Common Speed Ratio Reference<\/h2>\n

Quick reference for 08B drive-to-driven sprocket tooth count combinations and resulting speed ratios:<\/p>\n

\n\n\n\n\n\n\n\n\n\n
Drive Teeth<\/th>\nDriven Teeth<\/th>\nRatio<\/th>\nSpeed Reduction<\/th>\n<\/tr>\n<\/thead>\n
17<\/td>\n34<\/td>\n2:1<\/td>\n50%<\/td>\n<\/tr>\n
17<\/td>\n51<\/td>\n3:1<\/td>\n67%<\/td>\n<\/tr>\n
19<\/td>\n57<\/td>\n3:1<\/td>\n67%<\/td>\n<\/tr>\n
21<\/td>\n84<\/td>\n4:1<\/td>\n75%<\/td>\n<\/tr>\n
15<\/td>\n105<\/td>\n7:1<\/td>\n86% (max recommended)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

Key Features and Advantages<\/h2>\n
\n
\n

Universal 12.7mm Pitch Compatibility<\/h4>\n

The 08B pitch of 12.7mm is the most common metric chain size globally. This sprocket is compatible with all ISO 08B roller chains from any manufacturer conforming to ISO\/R 606 or DIN 8187 standards.<\/p>\n<\/div>\n

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⚙ CNC Hobbed Teeth<\/h4>\n

AGMA quality class tooth profiles for uniform chain engagement.<\/p>\n<\/div>\n

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🔥 HRC 40-50 Hardened<\/h4>\n

Induction hardened teeth with ductile core for 2-3x wear life.<\/p>\n<\/div>\n

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🛠 Precision Bores<\/h4>\n

0.025mm TIR concentricity. H7 bore tolerance standard.<\/p>\n<\/div>\n

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🏭 Full Traceability<\/h4>\n

EN 10204 Type 3.1 material certificates available on request.<\/p>\n<\/div>\n

\n

Versatile Hub Options<\/h4>\n

Available in A-plate (smaller tooth counts), B-hub single sided, and C-hub double sided configurations. Taper-lock bushed versions also available for rapid installation.<\/p>\n<\/div>\n<\/div>\n

Compatibility<\/h2>\n
\n\n\n\n\n\n\n\n
Component<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
Chain<\/td>\n08B-1, 08B-2, 08B-3 ISO roller chain (12.7mm pitch)<\/td>\n<\/tr>\n
Max Bore (Stock)<\/td>\n6mm – 40mm depending on tooth count<\/td>\n<\/tr>\n
Keyway<\/td>\nDIN 6885 \/ AS 1403<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Selection Guide<\/h2>\n

By Chain:<\/strong> Verify your chain is 08B ISO standard (12.7mm pitch, 8.51mm roller). Do not interchange with ANSI #40 despite identical pitch \u2014 roller diameters differ.<\/p>\n

By Load:<\/strong> Simplex for standard loads. Duplex provides 1.7x capacity. Triplex provides 2.5x. Select based on the chain horsepower rating chart for your operating speed.<\/p>\n

By Environment:<\/strong> Standard C45 steel for dry indoor use. Zinc-plated for outdoor. Stainless steel (SS304\/SS316) for food, dairy, chemical, or marine exposure.<\/p>\n

Material and Process<\/h2>\n

Base Material:<\/strong> C45 (1045) carbon steel, 570-700 MPa tensile strength.<\/p>\n

Heat Treatment:<\/strong> Induction hardened tooth flanks, HRC 40-50 surface, ductile core retained for shock resistance.<\/p>\n

Surface Options:<\/strong> Black oxide (standard), zinc, zinc-nickel, phosphate, electro-polish (stainless only).<\/p>\n

Application Scenarios<\/h2>\n
\n
\n\"08B<\/p>\n

Agriculture & Grain Handling<\/h4>\n

Feed augers, grain elevator drives, and harvester header mechanisms. The 12.7mm pitch provides a good balance between load capacity and chain speed for agricultural applications.<\/p>\n<\/div>\n

\n\"08B<\/p>\n

Conveyor & Materials Handling<\/h4>\n

Medium-duty conveyor drives, accumulation systems, and pallet transfer mechanisms. Duplex and triplex configurations for higher load requirements.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Customer Feedback<\/h2>\n
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\n
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★★★★★ \u2014 Maintenance Engineer, Perth, Australia<\/p>\n<\/div>\n

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“08B duplex sprockets on our grain elevator have run through two full seasons without measurable tooth wear. Excellent quality for the price.”<\/p>\n<\/div>\n<\/div>\n

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★★★★★ \u2014 Plant Manager, Bangkok, Thailand<\/p>\n<\/div>\n

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“We standardised on Ever-Power 08B sprockets across our packaging facility. Consistent dimensional quality batch to batch.”<\/p>\n<\/div>\n<\/div>\n

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★★★★☆ \u2014 Technical Buyer, Milan, Italy<\/p>\n<\/div>\n

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“Good value 08B sprockets. We use them on conveyor drives in our bottling plant. Induction hardened teeth are noticeably more durable.”<\/p>\n<\/div>\n<\/div>\n

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★★★★★ \u2014 Operations Supervisor, Christchurch, New Zealand<\/p>\n<\/div>\n

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“Ordered custom finished bore 08B-2 sprockets. Bore and keyway tolerances were spot on. Fitted straight onto the shaft without rework.”<\/p>\n<\/div>\n<\/div>\n

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★★★★☆ \u2014 Procurement Officer, Lagos, Nigeria<\/p>\n<\/div>\n

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“Reliable supplier for 08B sprockets. Material certificates provided with every shipment which simplifies our incoming inspection process.”<\/p>\n<\/div>\n<\/div>\n<\/div>\n

FAQ<\/h2>\n
\nWhat is the difference between 08B and ANSI #40?<\/summary>\n
Both have 12.7mm pitch but 08B has a roller diameter of 8.51mm while ANSI #40 has 7.92mm. The internal widths also differ. They are not interchangeable \u2014 always match sprocket to chain standard exactly.<\/div>\n<\/details>\n
\nCan I upgrade from simplex to duplex on an existing drive?<\/summary>\n
Yes, provided both shafts can accommodate the wider hub and the machine frame has clearance. You will need to replace both drive and driven sprockets plus the chain. Our engineers can verify feasibility from your shaft dimensions.<\/div>\n<\/details>\n
\nWhat surface treatment is best for outdoor agricultural use?<\/summary>\n
Zinc plating provides good corrosion protection for outdoor agricultural applications at moderate cost. For coastal regions with salt exposure, zinc-nickel plating offers 5-10x better salt spray resistance.<\/div>\n<\/details>\n
\nDo you stock 08B sprockets for immediate dispatch?<\/summary>\n
08B is one of our highest-volume product lines. We maintain extensive stock of common tooth counts in stock bore configuration. Contact us with your specific requirements for availability confirmation.<\/div>\n<\/details>\n
\nAre taper-lock versions available in 08B?<\/summary>\n
Yes. We supply 08B sprockets with taper-lock bushings for rapid installation and removal. This is recommended for applications where frequent sprocket replacement or maintenance access is required.<\/div>\n<\/details>\n

Related Products<\/h2>\n
\n
\"08B<\/p>\n

08B Roller Chains<\/p>\n<\/div>\n

\"Coupling<\/p>\n

Coupling Sprockets<\/p>\n<\/div>\n

\"Taper<\/p>\n

Taper-Lock Bushings<\/p>\n<\/div>\n<\/div>\n

Installation Guide<\/h2>\n

1.<\/strong> Confirm 08B chain pitch compatibility. Verify tooth count, bore, and keyway match.<\/p>\n

2.<\/strong> Slide sprocket onto shaft, insert key, and tighten set screws to specification.<\/p>\n

3.<\/strong> Align drive and driven sprockets to within 0.5mm per 300mm centre distance.<\/p>\n

4.<\/strong> Install chain with 2-3% sag on slack side. Use a chain breaker tool for connecting links.<\/p>\n

5.<\/strong> Lubricate with ISO VG 30-50 oil. Run at low speed for 30 minutes and recheck alignment.<\/p>\n

Maintenance<\/h2>\n

Lubrication:<\/strong> ISO VG 30-50 oil applied at engagement point. Frequency based on operating hours and environment.<\/p>\n

Inspection:<\/strong> Check tooth profiles at each chain change. Replace if hook wear exceeds 25% of tooth thickness.<\/p>\n

Life Expectancy:<\/strong> Well-maintained 08B sprocket should last 2-3 chain replacements under normal conditions.<\/p>\n

Certifications<\/h2>\n

✅ ISO 9001:2015   ✅ ISO\/R 606   ✅ DIN 8187   ✅ EN 10204 Type 3.1<\/p>\n

About Ever-Power Australia<\/h2>\n
\n
\n

We are a full-range power transmission manufacturer with 15+ years of export experience, an ISO 9001 certified facility, 3,200+ sprocket SKUs, and dedicated engineering support for the Australian market. We provide OEM manufacturing, material certification, and technical selection assistance for every sprocket order.<\/p>\n<\/div>\n

\"Ever-Power<\/div>\n<\/div>\n
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Get a Quote for 08B Sprockets<\/h3>\n

Provide your specifications for engineering review and competitive pricing.<\/p>\n

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

About Ever-Power Australia<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

08B metric roller chain sprocket for medium-duty industrial power transmission. 12.7mm pitch conforming to ISO\/R 606 and DIN 8187. Manufactured from C45 carbon steel with induction-hardened tooth flanks. Widely used in conveyor drives, agricultural machinery, and materials handling systems across Australia. Available in simplex, duplex, and triplex with 9 to 114 teeth.<\/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":[3013,3014,3015,3016,3009],"class_list":{"0":"post-2038","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-08b-sprocket","9":"product_tag-12-7mm-pitch-sprocket","10":"product_tag-iso-08b-sprocket","11":"product_tag-medium-duty-sprocket","12":"product_tag-metric-roller-chain-sprocket","14":"first","15":"instock","16":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/drivensprockets.top\/de\/wp-json\/wp\/v2\/product\/2038","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/drivensprockets.top\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/drivensprockets.top\/de\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/drivensprockets.top\/de\/wp-json\/wp\/v2\/comments?post=2038"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/drivensprockets.top\/de\/wp-json\/wp\/v2\/media\/1986"}],"wp:attachment":[{"href":"https:\/\/drivensprockets.top\/de\/wp-json\/wp\/v2\/media?parent=2038"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/drivensprockets.top\/de\/wp-json\/wp\/v2\/product_brand?post=2038"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/drivensprockets.top\/de\/wp-json\/wp\/v2\/product_cat?post=2038"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/drivensprockets.top\/de\/wp-json\/wp\/v2\/product_tag?post=2038"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}