D12B40
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Overview |
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| Part Number | D12B40 |
Brand: LILY ![]() |
Interchangeable With: Martin |
Characteristics |
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| System of Measurement | Metric |
| Number Of Teeth | 40 |
| For Roller Chain Trade Size | 12B-2 |
| Type | B |
Dimensions |
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| Pitch Diameter | 242.8 mm |
| Bore Dia | 25 mm |
| Bore Max | 85 mm |
| Chain Pitch | 15.88 mm |
| Hub Dia | 130 mm |
| Hub Length Thru | 50 mm |
Properties |
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| WT.lb(APPROX) | 13.67 kg |
Design Features of D12B40 Sprockets
D12B40 feature a standard ISO tooth profile designed for duplex (double-strand) roller chains, ensuring smooth and precise engagement to reduce impact and wear. With a pitch of 0.750" (19.05 mm), they provide higher load-carrying capacity compared to simplex sprockets by distributing the load across two parallel rows of teeth. They can be manufactured with various hub styles and bore options, including machinable, keyed, or set-screw-secured bores, to suit different shaft and mounting requirements. Commonly made from medium carbon steel, stainless steel, or alloy steel, they can be treated with surface coatings or have hardened teeth for improved wear resistance. Built to ISO dimensional tolerances, they ensure accurate pitch diameter, tooth spacing, and concentricity, making them suitable for medium to heavy-duty applications requiring reliable, high-strength power transmission.
What Benefits Can D12B40 Sprockets Provide?
- Higher Load Capacity: Distributes power across two strands of chain, allowing it to handle greater torque and heavier loads than simplex designs.
- Smooth and Reliable Operation: Standard ISO tooth profile ensures precise engagement, reducing shock, vibration, and wear on both sprocket and chain.
- Durability for Demanding Applications: Manufactured from robust materials with optional surface treatments and hardened teeth for extended service life in harsh environments.
- Versatile Installation Options: Available with various hub styles and bore configurations, including keyways and set screws, for easy integration into different systems.
What Can D12B40 Sprockets Be Used for?
- Heavy-Duty Conveyor Systems: Drives high-load conveyor belts in manufacturing, mining, and bulk material transport.
- Agricultural Equipment: Powers demanding components in harvesters, threshers, and other high-torque farm machinery.
- Industrial Machinery: Transfers torque in heavy-duty mixers, crushers, presses, and large-scale processing equipment.
- Material Handling and Lifting Equipment: Operates hoists, elevators, and other load-moving systems requiring increased strength and reliability.





