HPE 78-R1-12H Modular 12-Tooth Engineering Class Sprocket
This HPE Sprocket is compatible with 50+ Engineering Class Conveyor Chains. Browse the complete compatibility list below to quickly find your chain and verify fitment before ordering.
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This HPE Sprocket is designed for use with an R1 Split Taper Bushing.
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Compatible Engineering Class Chains
This HPE modular sprocket is designed for a wide range of industry-standard engineering class conveyor chains. Select a chain family below to quickly find your compatible chain size.
81X Chain Family
WH78 Chain Family
H Series Chain Family
S / SS Chain Family
88 / 882 Chain Family
Specialty / Conveyor Chain Family
Product Overview
The HPE 78-R1-12H Modular 12-Tooth Sprocket represents the next evolution in engineering class conveyor sprocket design. As the industry's first modular engineering class sprocket system, it combines an innovative modular bushing design with premium materials to deliver exceptional performance, simplified maintenance, and unmatched shaft size versatility.
Just buy an HPE Sprocket, install the correct R1 Bushing for your application, and you're ready to get back to work.
This precision-machined 12-Tooth Modular Sprocket is manufactured from high-strength C1045 steel and engineered for reliable operation in demanding conveyor and material handling applications. Compatible with 50+ engineering class conveyor chain styles, the HPE 78-R1-12H delivers smooth chain engagement, outstanding wear resistance, and dependable power transmission in even the most demanding operating environments.
Designed for use with an R1 Bushing, the modular HPE system provides outstanding shaft size versatility while making future maintenance and replacement faster, easier, and more cost-effective than traditional one-piece sprockets. Whether you're replacing a worn sprocket or specifying components for a new conveyor system, the HPE 78-R1-12H delivers the durability, flexibility, and innovation today's industrial operations demand.
HPE Sprocket Advantages
HPE Modular Sprockets are engineered to outperform traditional one-piece engineering class sprockets by combining premium materials, modular bushing versatility, and precision manufacturing.
1045 Steel Construction
Manufactured from high-strength C1045 steel for excellent durability, hardness, and long service life in demanding conveyor applications.
Hardened Teeth
Precision hardened teeth help reduce wear, improve shock resistance, increase load capacity, and lower long-term operating costs.
Precision Machined
Manufactured to tight tolerances for smooth chain engagement, consistent performance, and even wear across all sprocket teeth.
Extremely Versatile
The modular design accepts compatible bushings, opening the door for a wide range of shaft sizes using stocked components.
Black Oxide Coated
Finished with a black oxide coating to provide light corrosion resistance, improved lubricity, and reduced light reflection.
Complete dimensional information for the HPE 78-R1-12H Modular 12-Tooth Engineering Class Sprocket.
| Specification | Value |
|---|---|
| Part Number | 78-R1-12H |
| Bushing Type | R1 |
| Tooth Count | 12 |
| Outside Diameter (D) | 11.25" |
| Pitch Diameter (P) | 10.080" |
| Root Diameter (G) | 9.205" |
| Dimension (S) | 4.00" |
| Dimension (L) | 4.00" |
| Plate Thickness (T) | 0.875" |
| Hub Diameter (H) | 5.375" |
| Sprocket Width (W) | 2.00" |
| Bolt Circle (C) | 4.625" |
Compatible With R1 Bushings
This HPE sprocket is designed for use with R1 Type Bushings. Select the correct bore size for your application from our R1 Type Bushing collection, install it into your HPE sprocket, and you're good to go!
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