ईपी-⌀0.625″ अमेरिकन स्प्रोकेट-स्टील स्टॉक स्प्रोकेट
The EP-⌀0.625″ is catalogued as No.80-3 within the American Sprockets Series — a triple-strand (triplex) steel stock sprocket conforming to ANSI B29.1 and the broader American standard chain sprocket system. The No.80 chain designation specifies a 1-inch pitch and a 0.625-inch (5/8″) roller diameter, placing this size in the medium-heavy duty segment of American metric sprockets and industrial roller chain drives.
The dimensional framework follows ANSI/ASME B29.1 precisely. The simplex tooth width b1 is 0.557 inches, expanding to 1.710 inches for the duplex tooth width B2 and 2.863 inches for the triplex tooth width B3. These three widths accommodate the three-strand chain’s inner and outer plate stack while maintaining the correct lateral clearance for smooth, low-wear roller engagement across all three strands simultaneously.
The tooth count range — 11 through 95 — gives procurement engineers a wide selection of gear ratios within a single catalogue series. American sprockets sizes from Z=11 with a 4.010-inch outer diameter up to Z=95 with a 30.830-inch outer diameter cover an exceptional span, from compact high-speed pinion positions to large, slow-speed elevator and conveyor driven sprockets. Material throughout is carbon steel with induction-hardened tooth flanks, meeting the quality levels that ANSI B29.1-conformant industrial sprockets and gears require for rated service life in medium-heavy duty applications.
American Standard Sprockets Series
EP-⌀0.625" American Sprockets — No.80-3 Steel Stock Sprockets
The No.80-3 is a triple-strand American sprocket manufactured to ANSI B29.1 standards, designed to engage a 1-inch pitch roller chain with a 0.625-inch (5/8") roller diameter. Available in Type B and Type C hub configurations from 11 to 95 teeth, this American sprocket series delivers the load capacity, dimensional accuracy, and material quality demanded by industrial buyers across the United States, Colombia, and global markets running ANSI-standard chain drive systems. Stock bore is available across the full range, with CNC-machined tooth profiles verified to ANSI B29.1 for every production batch.
1. Technical Specifications — No.80-3 American Sprockets (⌀0.625" Roller)
Full dimensional data for the No.80-3 triple-strand American sprockets range. Outer diameter (De), pitch diameter (Dp), bore range (D1 Min/Max), hub diameter (Dm), hub width (A), and approximate weight (lbs) are listed for each tooth count. Type B hub (extended, offset) covers Z=11–Z=36; Type C hub (centred) covers Z=42–Z=95.
Pitch: 1"
Roller Φ: 0.625"
Standard: ANSI B29.1
b1 (simplex): 0.557"
B2 (duplex): 1.710"
B3 (triplex): 2.863"
Triple-strand (No.80-3)
Type B: Z=11–36
Type C: Z=42–95
Material: Carbon Steel
| No. Teeth | Number | De (in) | प्रकार | D1 Min (in) | D1 Max (in) | Dm (in) | A (in) | Weight Lbs (Approx.) |
|---|---|---|---|---|---|---|---|---|
| 11 | E80B11H | 4.010 | बी | 1 | 1½ | 2½ | 3⅞ | 5.9 |
| 12 | E80B12H | 4.330 | बी | 1 | 1⅞ | 2²⅞₃₂ | 3⅞ | 7.5 |
| 13 | E80B13H | 4.660 | बी | 1 | 2¼ | 3⅞₃₂ | 3⅞ | 9.2 |
| 14 | E80B14H | 4.980 | बी | 1 | 2⅞ | 3¹²⅞₃₂ | 3⅞ | 11.0 |
| 15 | E80B15H | 5.300 | बी | 1 | 2½ | 3¾¼ | 3⅞ | 13.1 |
| 16 | E80B16H | 5.630 | बी | 1 | 2¾ | 4 | 3⅞ | 15.8 |
| 17 | E80B17H | 5.950 | बी | 1 | 3 | 4¾¼ | 3⅞ | 18.6 |
| 18 | E80B18H | 6.270 | बी | 1 | 3⅞ | 4¾⅞₆₄ | 3⅞ | 21.2 |
| 19 | E80B19H | 6.590 | बी | 1 | 3⅞₆ | 5 | 3⅞ | 23.7 |
| 20 | E80B20H | 6.910 | बी | 1 | 3⅞₆ | 5 | 3⅞ | 26.0 |
| 21 | E80B21H | 7.240 | बी | 1 | 3⅞₆ | 5 | 3⅞ | 28.4 |
| 22 | E80B22H | 7.560 | बी | 1 | 3⅞₆ | 5 | 3⅞ | 31.0 |
| 23 | E80B23H | 7.880 | बी | 1 | 3⅞₆ | 5 | 3⅞ | 33.6 |
| 24 | E80B24H | 8.200 | बी | 1 | 3½ | 5¼ | 3⅞ | 37.1 |
| 25 | E80B25H | 8.520 | बी | 1 | 3½ | 5¼ | 3⅞ | 40.1 |
| 26 | E80B26 | 8.840 | बी | 1 | 3½ | 5¼ | 3⅞ | 42.9 |
| 30 | E80B30 | 10.110 | बी | 1¼ | 3¾ | 5¾ | 4¼ | 54.5 |
| 35 | E80B35 | 11.710 | बी | 1¼ | 3¾ | 5¾ | 4¼ | 79.5 |
| 36 | E80B36 | 12.030 | बी | 1¼ | 3¾ | 5¾ | 4¼ | 83.9 |
| 42 | E80C42 | 13.940 | सी | 1¼ | 3⅞₃₈ | 6 | 4½ | 84.9 |
| 45 | E80C45 | 14.900 | सी | 1¼ | 3⅞₃₈ | 6 | 4½ | 92.4 |
| 52 | E80C52 | 17.130 | सी | 1½ | 3⅞₃₈ | 6 | 4½ | 107 |
| 60 | E80C60 | 19.680 | सी | 1½ | 4¼ | 6¼ | 4¾ | 128 |
| 68 | E80C68 | 22.230 | सी | 1½ | 4¼ | 6¼ | 4¾ | 140 |
| 76 | E80C76 | 24.780 | सी | 1½ | 4¼ | 6¼ | 4¾ | 165 |
| 95 | E80C95 | 30.830 | सी | 1½ | 4½ | 6¾ | 5 | 240 |
All dimensions in inches. Type B=extended single-side hub; Type C=centred hub. H suffix denotes hardened bore. Weights approximate. Tolerances per ANSI B29.1.

2. Five Key Advantages of the No.80-3 American Sprocket
① Triple-Strand Capacity Without Changing Shaft Geometry
The No.80-3 triplex configuration delivers three times the load capacity of a single-strand No.80 American Sprocket while keeping the pitch circle diameter and shaft centre distance identical to the simplex equivalent. This allows machine designers to uprate drive capacity on existing equipment layouts by replacing the simplex chain-and-sprocket pair with a triplex set — without relocating shafts, modifying frames, or moving to a larger pitch. This is one of the most cost-effective upgrades available in American sprocket engineering.
② ANSI B29.1 Verified Tooth Profile Across All 85 Tooth Counts
Every american sprocket in the No.80-3 series is CNC-machined and coordinate-measured against ANSI B29.1 before dispatch. The 0.625-inch roller diameter, 1-inch pitch, and ANSI-specified tooth form are held within tolerance across the complete Z=11–Z=95 range. For industrial buyers sourcing american sprockets for sale as OEM build components or replacement parts, this conformance verification eliminates dimensional uncertainty at installation and supports warranty documentation for the host machine.
③ Type B and Type C Hub Options for Flexible Mounting
The No.80-3 series american sprocket provides two hub configurations tailored to different sprocket sizes and mounting requirements. Type B sprockets (Z=11–Z=36) feature an extended hub on one side, maximising bore depth for shaft engagement in small-diameter sprockets where hub length would otherwise limit keyway engagement. Type C sprockets (Z=42–Z=95) use a centred hub geometry suited to larger pitch diameter sprockets where balanced load distribution across both shaft bearings is the priority. This dual-configuration approach is a defining characteristic of well-engineered american standard chain sprockets.
④ Carbon Steel with Induction-Hardened Tooth Flanks
Standard material is carbon steel produced and machined to the quality level required by ANSI B29.1 for industrial chain drive sprockets. Tooth flank induction hardening achieves surface hardness in the HRC 45–55 range while preserving a tough core that absorbs shock loading without fracture — the dual-property combination that separates precision industrial sprockets and gears from commodity cast components. What is the best steel for sprockets? Carbon steel with induction hardening consistently outperforms plain steel, aluminium, and plastic alternatives in the load and duty ranges where No.80-3 American Sprocket is typically specified.
⑤ Stock Bore for Immediate Dispatch — Full Custom OEM Capability
Stock bore configurations covering the full Z=11–Z=95 range are available for immediate dispatch, supporting urgent MRO requirements without machining lead times. For custom sprocket manufacturer programmes needing specific bore sizes, keyways, QD (Quick-Detachable) bushing bores, or non-standard hub configurations, our engineering team machines to customer drawing. The combination of immediate stock availability and engineered-to-order custom manufacturing makes us a reliable single-source industrial sprockets and gears supplier for both scheduled production and emergency replacement requirements.
3. How the No.80-3 American Sprocket Transmits Power
The American sprocket operates on the same positive-engagement principle as all roller chain sprockets — each tooth enters the chain from below and seats a chain roller in the tooth gullet, transferring driving force through direct contact between the tooth flank and the roller surface. What distinguishes the No.80-3 triple-strand configuration is that three separate chain strands engage simultaneously on three parallel sets of tooth rows, all sharing the same pitch circle. The torque load is shared across all three strands, reducing the tension in each individual chain to one-third of what a single-strand drive would require at the same shaft torque — which in turn reduces fatigue stress on chain links, pins, and roller contact surfaces.
In the No.80-3 American Sprocket, the 1-inch pitch governs the angular distance between tooth centres on the sprocket. This pitch, combined with the 0.625-inch roller diameter and the ANSI B29.1 tooth form, determines the geometry of the tooth pocket — specifically, the root radius, flank angle, and clearances that govern how each roller seats during engagement and releases during disengagement. ANSI B29.1 specifies these parameters in detail, and the CNC machining of our No.80-3 American Sprockets holds the critical dimensions within ANSI tolerance limits to ensure that new sprockets engage ANSI No.80 chain correctly on first installation, without requiring a wear-in adjustment period.
The transition between Type B and Type C hub configurations across the tooth count range reflects a practical engineering consideration. In smaller sprockets (Z=11–Z=36), the boss diameter relative to the outer diameter is large, making an extended single-side hub (Type B) the natural configuration — it provides maximum bore depth for shaft engagement without creating stress concentration at the tooth root. In larger sprockets (Z=42–Z=95), the outer diameter is large enough to accommodate a centred hub (Type C) that distributes the shaft load symmetrically across both bearing positions, reducing bending moments on the drive shaft at large sprocket diameters. This hub transition is a standard feature of American made sprockets in the medium-heavy duty chain range.
4. Material Specification and Surface Treatment
The standard material for the No.80-3 American sprockets is carbon steel conforming to the material requirements of ANSI B29.1. This alloy is selected for its combination of machinability to close tooth profile tolerances, hardenability under induction treatment, and toughness under the shock and impulse loading that characterises triple-strand drives in heavy conveyor and materials handling applications. Tooth flanks are induction-hardened to HRC 45–55 while the core retains a ductile, fatigue-resistant microstructure — the specific combination of properties that determines long-term service life in industrial roller chain drives.
What sprocket is better, aluminum or steel? For the load levels associated with No.80-3 triple-strand drives — which handle the torque of three simultaneous chain strands under industrial duty cycles — steel is the only appropriate structural material. Aluminium sprockets are appropriate for lightweight, low-torque applications such as bicycle or lightweight automation drives where mass reduction takes priority over load capacity; they are not rated for the weight loads, shock duty, and thermal cycling associated with industrial conveyors, agricultural equipment, or material handling systems. Steel stock sprocket components in the No.80-3 range are specified precisely because no alternative material meets the load rating requirements at comparable cost.
For applications where corrosion resistance is required in addition to structural performance — food processing lines, chemical conveying equipment, and coastal or tropical installations in Colombia and Latin American markets — stainless steel sprockets and gears in AISI 316 are available. The tooth geometry is identical to the carbon steel range, allowing direct material substitution without drive re-engineering. Surface treatment options for the standard carbon steel range include black oxide (producing the black kettenrad zahnrader finish) for modest corrosion protection with negligible dimensional change, and zinc phosphate with oil for improved rust inhibition during tropical-climate storage and transit.

5. अनुप्रयोग परिदृश्य
The No.80-3 triple-strand American sprocket occupies the medium-heavy duty segment of the industrial chain drive market. Its applications are defined by the need for high torque capacity within the 1-inch pitch envelope — situations where a simplex or duplex chain would require unacceptable chain tension or shaft loading to handle the required power.
Heavy Conveyor Drives — Manufacturing and Warehousing
Pallet conveyors, heavy-duty roller conveyors, and transfer systems in manufacturing plants and distribution centres use No.80-3 sprockets in head-shaft and tail-shaft positions where the combined weight of loaded pallets and conveyor structure creates sustained chain tension beyond simplex chain capacity. The triple-strand configuration distributes this tension across three chains, keeping individual chain loads within the service factor limits recommended by ANSI B29.1 for continuous-duty industrial conveyor applications. Industrial sprockets and gears in this size range represent the highest-volume replacement part category in heavy conveyor maintenance programmes.
Agricultural Equipment — Colombia and Latin America
American-built combines, grain augers, cotton pickers, and sugar cane harvesters exported to Colombia and other Latin American markets predominantly use ANSI B29.1 chain standards — making the No.80-3 one of the most-requested replacement kettenrad zahnrader equivalents in the regional agricultural machinery parts market. Field maintenance teams servicing American-standard equipment in Colombia should verify the chain designation (No.80 on the chain side plate) and strand count before ordering replacement sprockets, as European DIN 8187 chains of similar pitch are dimensionally incompatible. Our stock bore range allows rapid replacement dispatch to Colombian buyers without custom machining lead times.
Mining and Quarry Equipment Drives
Underground mining haulage conveyors, surface stockpile reclaimers, and quarry belt feeder drives frequently specify No.80-3 roller chain sprockets for their final drive positions. The triple-strand configuration is particularly valued in these applications because it allows higher horsepower to be transmitted through a relatively compact 1-inch pitch chain without moving to the bulkier No.100 or No.120 pitch sizes that require heavier shaft and bearing arrangements. The hardened-tooth carbon steel construction handles the intermittent shock loading typical of mining conveyor start-up cycles without the brittleness risk associated with fully hardened through-hardened steel.
Food Processing and Packaging Lines
Heavy-duty food processing lines — meat deboning conveyors, fish meal cookers, and large-format packaging machines — use triple-strand American sprockets in main drive positions where load exceeds the simplex chain rating. Stainless steel sprockets and gears in AISI 316 are available for this series for wash-down positions, supporting compliance with HACCP requirements and EU Regulation 1935/2004 for food-contact materials. For Colombian food processing plants importing American-standard equipment, stock bore sprockets in the No.80-3 range enable quick replacement without extended machine downtime.
Bucket Elevator and Grain Handling Systems
Bucket elevator head and boot shaft drives in grain elevators, feed mills, and cement plants use large-tooth-count No.80-3 sprockets — typically Z=42 through Z=95 — in the Type C hub configuration. The slow-speed, high-torque loading profile of elevator drives benefits directly from the triple-strand capacity distribution, keeping individual chain tensions within the service limits that govern fatigue life in continuous-duty elevator operation. Buyers across North America, Colombia, and the broader Americas region sourcing american sprockets sizes for elevator replacement should reference the tooth count and outer diameter from the existing sprocket before ordering.
Oil and Gas Field Equipment
Pumping units, rod lift systems, and wellhead auxiliary drives in oil field operations use heavy-duty American metric sprocket configurations where reliable chain engagement under high-cycle, high-load conditions is essential. The No.80-3 double chain sprocket gear arrangement covers the load range of these drives and is frequently specified for new installations where ANSI B29.1 chain systems are the project standard. Replacement sprocket manufacturer supply capability with stock bore availability reduces equipment downtime on producing wellsites where delays carry significant operational cost.
6. Standards and Regulatory Framework
Procurement of American standard chain sprockets for use in regulated industries or across multiple markets involves compliance with the applicable mechanical safety and materials standards of each jurisdiction. The following framework covers the key regulatory requirements for the No.80-3 series.
ANSI/ASME B29.1 — American Chain Standard
The primary governing standard for roller chain and sprocket dimensions in the American market. ANSI B29.1 specifies pitch, roller diameter, inner link width, and sprocket tooth profile tolerances for all No.80 designation components. All American Sprockets in our No.80-3 series are verified to ANSI B29.1 with dimensional records available for OEM technical files and ASME machinery compliance submissions.
OSHA and ASME B15.1 — USA Machinery Guarding
In the United States, chain and sprocket assemblies installed in machinery must comply with OSHA 29 CFR 1910.219 (mechanical power transmission guarding) and ASME B15.1 safety standards, which require appropriate guards on all exposed chain drives accessible to personnel. Specifying ANSI B29.1 conformant american sprockets is the dimensional baseline for demonstrating that the chain drive meets the safeguarding requirements applicable under OSHA inspection.
Colombia — Icontec NTC and Ministry of Labour
In Colombia, machinery safety is governed by Ministerio del Trabajo resolutions referencing applicable ISO and ANSI standards. Industrial chain drives installed in Colombian facilities — particularly in mining, food processing, and agricultural sectors — must meet the operational safety requirements of the applicable NTC standard, which for ANSI chain drives generally references ANSI B29.1 directly. Our material and dimensional documentation supports Colombian buyers' compliance submissions to national regulatory bodies.
EU Machinery Directive 2006/42/EC (for export to Europe)
For American sprockets exported into EU markets and installed in CE-marked machinery, the ANSI B29.1 chain dimensions are not directly covered by EN harmonised standards — the equivalent European standard is DIN 8187. Machinery incorporating No.80-3 American Sprockets in an EU market typically requires a technical justification in the machine technical file demonstrating equivalent safety to the harmonised standard. Our engineering team can provide the dimensional comparison documentation needed for this justification.
MSHA — US Mining Safety and Health Administration
Chain drive components in underground mining applications in the United States are subject to MSHA regulations requiring that all drive components are maintained in safe operating condition and that replacement parts meet the original dimensional and material specifications. Our ANSI B29.1 conformant No.80-3 American Sprockets satisfy the "equivalent replacement" requirement that MSHA inspectors apply to chain drive maintenance documentation in regulated mining operations.
Food Safety — FDA 21 CFR and INVIMA (Colombia)
For food processing applications in the US, chain drive components in food-contact or food-adjacent positions may fall under FDA 21 CFR material requirements. In Colombia, INVIMA oversees food contact materials in processing equipment. Our AISI 316 stainless steel No.80-3 American Sprockets are available with material certificates and can be supplied with compliance declarations supporting both FDA and INVIMA documentation requirements.
7. About Us - American Standard Sprockets Manufacturer
In operation since 2010, our facility has spent more than fifteen years producing precision roller chain sprockets and gear components to the full range of international dimensional standards — ANSI/ASME B29.1, DIN 8187 / ISO/R 606, and JIS B 1801. Our production floor combines CNC hobbing centres, profile-grinding machines, and coordinate measuring stations, maintaining tooth profile tolerances to ANSI standard quality grades across complete production batches rather than isolated sample pieces.
Every American sprocket tooth profile is verified against ANSI B29.1 (or the applicable European or Asian standard) before dispatch, with dimensional records retained for customer OEM technical files. Gear tooth accuracy is documented to DIN 3961 / ISO 1328 quality grades for gear components. Our catalogue spans all three major roller sprocket standards — American ANSI/ASME, European DIN/ISO, and Asian JIS — as well as a complete gear range per DIN 782 covering spur gears, bevel gears, and racks. Whether the requirement is a standard stock bore american sprocket for same-week dispatch, or a fully engineered custom sprocket manufacturer output for an OEM production programme, our manufacturing and inventory capability covers both without minimum order constraints on repeat design numbers. For industrial buyers across Colombia, the United States, and international markets, we are a reliable single-source chains and sprockets supplier for medium-heavy duty drive systems.
WorkShop




8. System-Compatible Components
A triple-strand sprocket performs to its ANSI B29.1 specification only when paired with correctly specified drive components. We supply matched system components — chain and reducer — from the same quality framework as the sprockets, removing the compatibility risk that arises from multi-supplier procurement across different standards.
ANSI No.80 Triple-Strand Roller Chain
An ANSI B29.1 No.80 triple-strand roller chain is the essential counterpart to the No.80-3 sprocket. The chain must match in pitch (1 inch), roller diameter (0.625 inch), and strand count — using a simplex or duplex chain on a triple-strand sprocket results in immediate misalignment and premature wear. Our roller chains are manufactured to ANSI B29.1 with all critical dimensions within the tolerance window governing the sprocket tooth pocket geometry. For buyers sourcing chains and sprockets as a matched triple-strand set, a single combined conformance declaration covering both chain and sprocket dimensions can be provided, simplifying incoming inspection for quality-managed procurement operations in Colombia and across North America.

NMRV Worm Gear Reducer
Most No.80-3 chain drives receive their speed reduction through a gear reducer positioned between the prime mover and the drive sprocket shaft. Our NMRV worm gear reducers are available in output shaft diameters and keyway configurations that align with the bore ranges used across the No.80-3 series — from the 1-inch minimum bore at Z=11 up to the 4.5-inch maximum bore at Z=95. Specifying sprockets and reducer together from a single supplier allows our engineering team to confirm shaft diameter, keyway, and output speed before delivery, eliminating the dimensional mismatches that most commonly appear during chain drive commissioning when components are sourced independently. For sprockets and gears near me buyers across the Americas region, this one-stop sourcing approach reduces procurement lead time and coordination effort significantly.

अक्सर पूछे जाने वाले प्रश्नों
Full American Sprockets Range Available
Browse the complete American Sprockets series — all chain pitch sizes, hub configurations, and bore options.
संपादक: पीएक्सवाई
