
EMMAR 12-B2 roller chain
- Brand
- EMMAR
- Category
- Power transmission
- Subcategory
- Roller chains
- Series
- BS
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
Request your quote via WhatsApp or email, with the quantity you need.
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Ask us about alternatives. Equivalence is verified for each reference and application.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
Description
EMMAR 12-B2 is a reference of roller chain, within Power transmission. Request a quote for 12-B2 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The 12-B2 chain is a double-strand roller chain according to the BS European standard, with a 3/4 inch pitch. It is used to transmit power between parallel shafts when more load capacity is needed than a single-strand chain of the same pitch. At MR Accesorios Industriales you request a quote on WhatsApp with code 12-B2 and we send you the alternatives.
This item is a double-strand roller chain of the BS series, identified as 12-B2. Its rollers have a diameter of 12.07 mm and the inner width between plates is 11.68 mm. The pitch corresponds to 3/4 inch, the same as the single-strand 12-B chain. The double strand doubles the number of plates and rollers per pitch, which allows more power to be transmitted within the same sprocket width.
It is used in chain drives of agricultural machinery, conveyors, bucket elevators, mixers and process equipment. It also appears in low-speed, high-torque drives where a single-strand chain would be at its limit. It is commonly found in machines where axial space is limited and the load needs to be concentrated on a single line of shafts.
To select it, verify that the pitch matches that of the sprockets and that the 11.68 mm inner width is compatible with the tooth thickness. The double strand requires double-strand sprockets; a single-strand one will not work. Check shaft alignment and tension: a misaligned double-strand chain quickly wears the rollers and plates. Lubricate according to the duty cycle and check elongation periodically.
To quote an equivalent, send us the code 12-B2 along with the pitch, the number of strands and a photo or sketch of the sprocket. We can also point you to the single-strand 12-B chain or one of another pitch in the same BS series that works for you. With that data we send you the alternative that best fits your machine.
To request a quote for the 12-B2 chain, write to us on WhatsApp at MR Accesorios Industriales with the code and the quantity you need. We will reply with the options and technical data so you can confirm before buying.
Dimensions
- Standard
- BS / ISO 606
- Rows
- Double
- Roller Ø
- 12.07mm
- Inner width
- 11.68mm
Frequently Asked Questions
- What does 12-B2 mean in a BS chain?
- The 12 indicates the 3/4 inch pitch according to the BS European standard. The B corresponds to the roller chain series and the 2 to the number of strands: it is a double-strand chain. It is not the same as a single-strand 12-B, which has only one strand.
- Can I use this chain with single-strand sprockets?
- No. The 12-B2 needs double-strand sprockets because it has two rows of rollers. If you mount a double-strand chain on a single-strand sprocket, it will not mesh correctly and premature wear occurs on teeth and plates.
- How do I request an equivalent or a different size chain?
- Write to us on WhatsApp with the code 12-B2, the pitch, the number of strands and a photo of the sprocket. With that data we offer you alternatives from the same BS series or pitch, and we confirm which one fits your equipment.

