The speed-fold chain is a type of conveyor chain widely used in automated production lines. Its core feature is that through a special structural design, the moving speed of conveyed items (conveying speed) forms a fixed multiple relationship with the chain's own running speed (e.g., 2.5 times, 3 times, etc.).
Core Advantages
Efficient Conveying: Through speed multiplication, the efficiency of item conveying is improved without increasing the chain running speed, reducing production cycle time.
Stable and Reliable: The large contact area between rollers and guide rails results in low vibration during operation, making it suitable for conveying precision or fragile items (such as electronic components, medical devices, etc.).
Flexible Adaptation: The chain length, speed multiple, and load capacity can be customized according to requirements to adapt to items of different weights and sizes.
Easy Integration: It can cooperate with automated equipment (such as robotic arms, sensors, sorting devices) to realize integrated operations such as conveying, positioning, and assembly.
double plus chain/Speed-fold chains
The structural forms of rollers in different models of speed multiplier chains



| The load capacity 0f different models of speed multiplier chains | ||||||
| Name | Model | Pitch(mm) | Nylon roller + aluminum track | Steel roller + steel track | ||
| Load capacity per meter of the line body | Maximum allowable tension of the line body | Load capacity per meter of the line body | Maximum allowable tension of the line body | |||
| Single Speed | BSI-C212A | 38.1 | 100KG | 2058KG | 400KG | 3800KG |
| Single Speed | BSII-C212A | 38.1 | 100KG | 2058KG | 400KG | 3800KG |
| 2.5 times speed | BS30-C212A | 38.1 | 100KG | 2058KG | 400KG | 3800KG |
| 3 times speed | BS25-C206B | 19.05 | 40KG | 550KG | 160KG | 980KG |
| BS25-C208A | 25.4 | 60KG | 880KG | 240KG | 1570KG | |
| BS25-C210A | 31.75 | 80KG | 1370KG | 320KG | 2450KG | |
| BS25-C212A | 38.1 | 100KG | 2058KG | 400KG | 3730KG | |
| BS25-C216A | 50.8 | 300KG | 5300KG | 600KG | 5300KG | |
| The uses of speed multiplier chains with different materials | |||||
| Material of the chain | Material of the intermediate roller | Characteristics / Features | Operating temperature (℃) | ||
| carbon steel | carbon steel | load-bearing + high temperature resistance | -10~+150 | ||
| carbon steel | nylon 6(PA6) | wide range of uses + affordable price | -10~+60 | ||
| carbon steel | nylon 66(PA66) | wear resistance + high temperature resistance | -10~+100 | ||
| carbon steel | Nylon 6 + Glass Fiber(GF30) | wear resistance + high temperature resistance | -10~+100 | ||
| carbon steel | Anti-static Nylon 6(AS PA6) | anti-static | -10~+80 | ||
| stainless steel SUS304 | nylon 6(PA6) | wide range of uses + rust resistance | -20~+80 | ||
| stainless steel SUS304 | nylon 66(PA66) | wear resistance + rust resistance | -20~+100 | ||
| stainless steel SUS304 | Polyoxymethylene(POM) | wear resistance + low water swelling + rust resistance | -20~+90 | ||
| stainless steel SUS304 | Polypropylene(PP) | acid and alkali resistance + corrosion resistance + rust resistance | -20~+80 | ||
| stainless steel SUS304 | stainless steel SUS304 | acid and alkali resistance + corrosion resistance + high temperature resistance + rust resistance | -20~+400 | ||
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