Description
Product Overview
A Series Short Pitch Precision Roller Chains are the global standard for mechanical power transmission and industrial conveying. The “A Series” designation follows the ISO/DIN numbering system — identical pitch to ANSI chains — making them directly interchangeable with standard sprockets manufactured to ANSI B29.1. “Short pitch” means the pitch-to-roller-diameter ratio is optimised for high-speed operation: reduced polygon effect, lower vibration, and quieter running compared to long-pitch conveyor chains.
At EVER-POWER we manufacture and supply A Series chains in simplex (single-strand), duplex (double-strand), triplex (triple-strand), and multiple-strand configurations up to 8 strands. All chains meet ISO 606, DIN 8187, and ANSI B29.1 dimensional standards. Carbon steel chains are the standard offering; 304 and 316 stainless steel variants are stocked in the most common sizes and available to order in all others.
Fatigue strength — not just tensile strength — is the critical design parameter for cyclic power transmission. Our A Series chains achieve fatigue resistance of approximately 1/9 of minimum tensile strength, achieved through controlled steel grade selection, precision pitch-hole fabrication, heat treatment of all link components, and shot-peening of link plates during manufacture.
Key Technical Features
Standard Compliance
ISO 606 / DIN 8187 / ANSI B29.1 — fully interchangeable with all standard A-series sprockets globally.
Options de matériaux
Carbon steel (standard), 304 stainless, or 316 stainless for food-grade and corrosive environments.
Seal & Lubrication
Pre-lubricated standard; O-ring and X-ring sealed variants available for extended maintenance intervals.
Multi-Strand Capacity
Simplex to 8-strand. Duplex and triplex sizes for high-load drives where smaller pitch is preferred over larger pitch simplex.
Liens de connexion
Each chain supplied with spring-clip connecting link. Two-pitch offset links available for all sizes for loop-free assembly.
Supply Format
10 ft / 3 m standard reels. Bulk 10 m, 25 m, 50 m reels for OEM customers. Pre-cut to any even number of links.
Simplex Chain Specifications — Single Strand (-1)
ISO 606 / DIN 8187 / ANSI B29.1 | All dimensions in mm | Q min in kN/lbf | Weight in kg/m | *Bush chain: d₁ = external bush diameter
| DIN/ISO Numéro de chaîne |
ANSI Numéro de chaîne |
Pitch P (mm) |
Diamètre du rouleau d₁ max |
Largeur intérieure b₁ min |
Diamètre de la broche d₂ max |
Pin Len. L max |
Plate Depth h₂ max |
Plate Thk. T max |
Résistance à la traction Q min (kN/lbf) |
Avg. Tensile Q₀ (kN) |
Poids (kg/m) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| *03C | *15 | 4.7625 | 2.48 | 2.38 | 1.62 | 6.10 | 4.30 | 0.60 | 1.80 / 409 | 2.0 | 0.08 |
| *04C-1 | *25 | 6.3500 | 3.30 | 3.18 | 2.31 | 7.90 | 6.00 | 0.80 | 3.50 / 795 | 4.6 | 0.15 |
| *06C-1 | *35 | 9.5250 | 5.08 | 4.77 | 3.58 | 12.40 | 9.00 | 1.30 | 7.90 / 1,795 | 10.8 | 0.33 |
| 085-1 | 41 | 12.7000 | 7.77 | 6.25 | 3.58 | 13.75 | 9.91 | 1.30 | 6.67 / 1,516 | 12.6 | 0.41 |
| 08A-1 | 40 | 12.7000 | 7.95 | 7.85 | 3.96 | 16.60 | 12.00 | 1.50 | 14.10 / 3,205 | 17.5 | 0.62 |
| 10A-1 | 50 | 15.8750 | 10.16 | 9.40 | 5.08 | 20.70 | 15.09 | 2.03 | 22.20 / 5,045 | 29.4 | 1.02 |
| 12A-1 | 60 | 19.0500 | 11.91 | 12.57 | 5.94 | 25.90 | 18.00 | 2.42 | 31.80 / 7,227 | 41.5 | 1.50 |
| 16A-1 | 80 | 25.4000 | 15.88 | 15.75 | 7.92 | 32.70 | 24.00 | 3.25 | 56.70 / 12,886 | 69.4 | 2.60 |
| 20A-1 | 100 | 31.7500 | 19.05 | 18.90 | 9.53 | 40.40 | 30.00 | 4.00 | 88.50 / 20,114 | 109.2 | 3.91 |
| 24A-1 | 120 | 38.1000 | 22.23 | 25.22 | 11.10 | 50.30 | 35.70 | 4.80 | 127.00 / 28,864 | 156.3 | 5.62 |
| 28A-1 | 140 | 44.4500 | 25.40 | 25.22 | 12.70 | 54.40 | 41.00 | 5.60 | 172.40 / 39,182 | 212.0 | 7.50 |
| 32A-1 | 160 | 50.8000 | 28.58 | 31.55 | 14.27 | 64.80 | 47.80 | 6.40 | 226.80 / 51,545 | 278.9 | 10.10 |
| 36A-1 | 180 | 57.1500 | 35.71 | 35.48 | 17.46 | 72.80 | 53.60 | 7.20 | 280.20 / 63,682 | 341.8 | 13.45 |
| 40A-1 | 200 | 63.5000 | 39.68 | 37.85 | 19.85 | 80.30 | 60.00 | 8.00 | 353.80 / 80,409 | 431.6 | 16.15 |
| 48A-1 | 240 | 76.2000 | 47.63 | 47.35 | 23.81 | 95.50 | 72.39 | 9.50 | 510.30 / 115,977 | 622.5 | 23.20 |
* Bush chain: d₁ indicates external diameter of bush.
Duplex Chain Specifications — Double Strand (-2)
Selected key sizes shown. Full range 04C-2 through 48A-2 available on request. Pt = transverse pitch (mm).
| DIN/ISO Numéro de chaîne |
ANSI Numéro de chaîne |
Pitch P (mm) |
Diamètre du rouleau d₁ max |
Largeur intérieure b₁ min |
Diamètre de la broche d₂ max |
Pin Len. L max |
Plate Depth h₂ max |
Trans. Pitch Pt (mm) |
Résistance à la traction Q min (kN/lbf) |
Avg. Tensile Q₀ (kN) |
Poids (kg/m) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| *04C-2 | *25-2 | 6.350 | 3.30 | 3.18 | 2.31 | 14.5 | 6.00 | 6.40 | 7.00 / 1,591 | 8.6 | 0.28 |
| 08A-2 | 40-2 | 12.700 | 7.95 | 7.85 | 3.96 | 31.0 | 12.00 | 14.38 | 28.20 / 6,409 | 35.9 | 1.12 |
| 12A-2 | 60-2 | 19.050 | 11.91 | 12.57 | 5.94 | 48.8 | 18.00 | 22.78 | 63.60 / 14,455 | 82.1 | 2.92 |
| 16A-2 | 80-2 | 25.400 | 15.88 | 15.75 | 7.92 | 62.7 | 24.00 | 29.29 | 113.40 / 25,773 | 141.8 | 5.15 |
| 20A-2 | 100-2 | 31.750 | 19.05 | 18.90 | 9.53 | 76.4 | 30.00 | 35.76 | 177.00 / 40,227 | 219.4 | 7.80 |
| 24A-2 | 120-2 | 38.100 | 22.23 | 25.22 | 11.10 | 95.8 | 35.70 | 45.44 | 254.00 / 57,727 | 314.9 | 11.70 |
| 48A-2 | 240-2 | 76.200 | 47.63 | 47.35 | 23.81 | 183.4 | 72.39 | 87.83 | 1,020.60 / 213,955 | 1,255.3 | 45.23 |
Triplex Chain Specifications — Triple Strand (-3)
Selected key sizes shown. Full range 04C-3 through 48A-3 available. Max tensile strength up to 1,530.9 kN / 347,932 lbf (48A-3).
| DIN/ISO Numéro de chaîne |
ANSI Numéro de chaîne |
Pitch P (mm) |
Diamètre du rouleau d₁ max |
Largeur intérieure b₁ min |
Diamètre de la broche d₂ max |
Pin Len. L max |
Plate Depth h₂ max |
Trans. Pitch Pt (mm) |
Résistance à la traction Q min (kN/lbf) |
Avg. Tensile Q₀ (kN) |
Poids (kg/m) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 08A-3 | 40-3 | 12.700 | 7.95 | 7.85 | 3.96 | 45.4 | 12.00 | 14.38 | 42.3 / 9,614 | 50.0 | 1.90 |
| 12A-3 | 60-3 | 19.050 | 11.91 | 12.57 | 5.94 | 71.5 | 18.00 | 22.78 | 95.4 / 21,682 | 111.1 | 4.54 |
| 16A-3 | 80-3 | 25.400 | 15.88 | 15.75 | 7.92 | 91.7 | 24.00 | 29.29 | 170.1 / 38,659 | 198.4 | 7.89 |
| 20A-3 | 100-3 | 31.750 | 19.05 | 18.90 | 9.53 | 112.2 | 30.00 | 35.76 | 265.5 / 60,341 | 309.6 | 11.77 |
| 48A-3 | 240-3 | 76.200 | 47.63 | 47.35 | 23.81 | 271.3 | 72.39 | 87.83 | 1,530.9 / 347,932 | 1,756.5 | 71.60 |
Industry Applications
Guide de sélection des chaînes
Determine Required Power & Speed
Enter transmitted power (kW) and sprocket speed (RPM) into the power rating chart for the selected pitch. Apply a service factor: 1.0 for smooth loads, up to 1.7 for shock or reversing loads.
Check Design Load vs. Tensile Strength
Peak chain pull × service factor must be below the Q min value in the table above. If it falls between two sizes, always select the larger size for safety margin.
Choisissez le nombre de brins
If a simplex chain would require 32A-1 or larger, consider duplex or triplex in a smaller pitch. Smaller pitch reduces polygon effect at high RPM and often allows a more compact, lighter drive package.
Select Material & Seal Type
Standard carbon steel for most applications. 304 or 316 stainless for food-grade, wet, or corrosive duty. O-ring or X-ring sealed chains for environments where re-lubrication is difficult or infrequent.
Ordering Options & Custom Supply
| Option | Available Choices |
|---|---|
| Matériel | Carbon steel (standard) | 304 Stainless | 316 Stainless |
| Seal Type | Open / Standard | O-Ring Sealed | X-Ring Sealed |
| Surface Finish | Self-colour | Zinc electroplated | Nickel plated |
| Supply Length | 10 ft / 3 m reel (standard) | 10 m | 25 m | 50 m bulk reels | Cut to length |
| Attachment Links | A1, A2, K1, K2, SK1 extended-pin and bent-lug attachments for conveyor integration |
| Liens de connexion | Spring-clip (standard) | Cotter pin type | Two-pitch offset link (all sizes) |
| MOQ | 1 reel for stock sizes | 5 m for made-to-order sizes |
Ready to Order or Need Technical Help?
Get a Same-Day Quotation
Send us your chain number, required length, strand count, and delivery location. For application support, include power (kW), shaft speeds (RPM), duty cycle, and environment — our engineering team will confirm the correct chain and matched sprocket specification at no charge.
