Description
ANSI A series corrosion-resistant roller chain
EP-25ZP Zinc-Plated Roller Chain
EP-25ZP follows the ANSI A series dimensions shown in the supplied corrosion-resistant chain sample. The sample presents this family as corrosion-resistant zinc-plated chain. The chain is intended for general outdoor drives, agricultural machinery, humid production areas, rain-exposed conveyors, and utility equipment where the selected finish, lubrication method, sprocket condition, and maintenance plan are reviewed together.
The sample marks this size as a bush chain; d1 indicates the external bush diameter. The model number is prefixed with EP- for this website while preserving the original dimensional designation.
Technical Specifications
| Chain No. | EP-25ZP |
|---|---|
| Dimensional family | ASME B29.1 dimensional family |
| Pitch P | 6.350 mm |
| Roller / bush diameter d1 max | 3.30 mm |
| Width between inner plates b1 min | 3.18 mm |
| Pin diameter d2 max | 2.31 mm |
| Pin length L max | 7.90 mm |
| Connecting pin length Lc max | 8.40 mm |
| Inner plate depth h2 max | 6.00 mm |
| Plate thickness t/T max | 0.80 mm |
| Breaking load Q | 3.50 kN / 795 lbf |
| Weight per meter q | 0.15 kg/m |
| Finish | Zinc-Plated |
| Available constructions | Simplex; duplex and triplex options; double-pitch conveyor versions by request |
Sample-Based Construction Notes
Duplex and triplex zinc-plated chains are available in the listed sizes. Double-pitch zinc-plated conveyor chains are available upon request.
For the sizes marked as bush chain, d1 is the external diameter of the bush. The 06B family is shown with straight side plates. These construction notes should be retained when preparing drawings, replacement checks, and RFQ documentation.
Matching Sprockets, Links and Drive Components
Pair EP-25ZP with a 25 chain sprocket made for the same dimensional family and strand count. Use connecting links and offset links with the same specified finish. Check sprocket tooth hooks, root wear, shaft runout, center distance, guarding, and lubrication access before commissioning.
Application Guidance
In the United States and Australia, buyers commonly review coated chains for agricultural and outdoor equipment exposed to rain, fertilizer residue, dust, and seasonal storage. German and Nordic projects often require clear coating declarations and machinery risk documentation. Japanese buyers frequently place strong emphasis on dimensional records, replacement drawings, and controlled maintenance procedures.
ASTM B117 is a controlled salt-fog test method and does not convert test hours directly into outdoor service life. Where a corrosion test is required, state the exact method, specimen, acceptance criterion, and coating chemistry in the purchase specification.
Customer Reviews & Case Studies
United States – Agricultural machinery
Use: Rain- and fertilizer-exposed drive on seasonal field equipment.
Project feedback: The selected zinc-plated chain and matching sprocket set simplified the replacement plan while retaining the specified pitch and roller dimensions.
Application fit: ★★★★★
Germany – Wastewater equipment
Use: Auxiliary drive near screening and washdown zones.
Project feedback: The engineering review focused on exact dimensions, connecting-link finish, guarding, and a documented inspection route.
Application fit: ★★★★★
Japan – Outdoor automation
Use: Compact transmission exposed to rain and periodic cleaning.
Project feedback: The buyer valued a concise dimensional table, traceable chain number, and matched sprocket guidance.
Application fit: ★★★★☆
Questions Buyers Ask
What dimensions define EP-25ZP?
The sample lists pitch P 6.350 mm, roller or bush diameter d1 3.30 mm, width between inner plates b1 3.18 mm, pin diameter d2 2.31 mm, maximum pin length L 7.90 mm, maximum connecting-pin length Lc 8.40 mm, inner plate depth h2 6.00 mm, and plate thickness t/T 0.80 mm.
What is the breaking load of EP-25ZP?
The sample lists a breaking load of 3.50 kN / 795 lbf. This value is not a working-load rating; drive selection must consider speed, shock, lubrication, sprockets, alignment, and duty cycle.
Can EP-25ZP be supplied as duplex or triplex chain?
Duplex and triplex zinc-plated chains are available in the listed sizes. Double-pitch zinc-plated conveyor chains are available upon request.
Which sprocket should be used with EP-25ZP?
Use a correctly manufactured 25 chain sprocket for the ANSI A series, matched to the strand count. Inspect tooth wear and alignment before installing a new chain.
