Which chain type is this cranked link compatible with?

This link fits simplex roller chains of type 12B-1 according to British Standard (BS / ISO) with a 19.05 mm (3/4") pitch.

What is the purpose of an offset link?

An offset link (cranked link or half link) allows you to connect and adjust a roller chain with an odd number of pitches.

What is the breaking load of this link?

The minimum breaking load of this 12B-1 component is 28900 N.

What are the main dimensions of this 12B-1 link?

It features a pitch of 19.05 mm, an inner width of 11.68 mm, a roller diameter of 12.07 mm, and a pin diameter of 5.72 mm.

Which Renold product series does this part belong to?

This offset link belongs to the Renold Blue product line.

RENOLD 12B1S12I reducing link BLUE 12b-1 - simplex 3/4 inch

Name: RENOLD 12B1S12I reducing link BLUE 12b-1 - simplex 3/4 inch
Brand: RENOLD
SKU: 03050005
Price: 11.24 EUR
Availability: InStock

Supplier number: RENOLD 12B1S12I | EAN 0673766034864

11.24 tax incl.

€9.29 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered as of 09/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

✆ Talk to a specialist

Precise chain adjustments for heavy industrial drives

Practical benefits

High tensile load capacity: Built with a 28900 N breaking load, you maintain complete operational safety under demanding drive conditions.
Quick odd link adjustment: This 12B-1 cranked link lets you easily adjust simplex roller chain lengths without sacrificing drive strength.
Wear-resistant dimensional accuracy: Engineered with a 19.05 mm pitch and 1.81 mm plate thickness, it delivers smooth engagement and long service life.

In a nutshell

The right choise for

With the Renold 12B-1 cranked link from the Renold Blue range, you easily adjust simplex roller chains to the exact length required. When you need to close or shorten a chain loop containing an odd number of links, this offset link provides the right mechanical connection without replacing the entire chain. Engineered with a 19.05 mm pitch, a 1.81 mm plate thickness, and a breaking load of 28900 N, it delivers dependable strength and smooth operation in heavy-duty drive lines and conveyor systems.

Product information FAQ

€11.24

In stock - tax incl.

Key features according to our expert

Pitch: 3/4 inch; 19,05 mm
Thickness (inner plate): 1,81 mm
Product line: Renold Blue
Number of the connecting link: 12
Weight (kg/m): 1,22 kg/m
Length (pin): 21,9 mm
Height: 2,6
Thickness (outer plate): 1,81 mm
Plate height: 16 mm
Type (ISO/ANSI): 12B-1
Version (link): Simplex
Diameter (pin): 5,72 mm
Diameter (roller): 12,07 mm
Breaking strength: 28900 N
Inside width: 11,68 mm

Product description:

Conveyor chains, like roller chains, can be made to different international standards. The main standards are:

British Standard (BS):
- This standard applies to chains made for the British market and for markets where British presence has had a major influence on technical design and buying behaviour. This standard is based on Renold's original conveyor chain design.
ISO Standard chains:
- Chains made to the ISO Standard are not interchangeable with chains made to the BS or DIN Standard.
- This standard is widely used in the European market, except in Germany.
- Chains made according to this standard are becoming increasingly popular and are widely used in Scandinavia.
- Renold has a lot of experience in producing conveyor chains.
- Renold's conveyor chains are based on many years of design and development, allowing us to deliver the optimal product.
- To ensure that this quality is reflected in the performance of our products, we carry out strict checks on:
  - Materials
  - Heat treatment
  - Processes
  - Fittings
  - Attachment assembly
  - Lubrication
  - Conveyor Chain Exploded View
Ultimate Renold reliability:
- The key to the reliability of Renold chains is consistency in design and manufacturing.
- The chains' maximum strength and wear resistance are achieved by strictly controlling material specification and using state-of-the-art heat treatment processes.
- The consistent overall tolerability of Renold chains makes them ideal for conveyor systems that require precise alignment of different chain mechanisms.
- The breaking load is greater than the internationally required minimum.
- For optimum performance, it is important to choose the right chain.
- Renold's experienced design team is always at your disposal for free advice on specific products and applications.
- Standard and Deep Link conveyor chains are available for BS4116 part 4 and for ISO 1977, with both hollow and solid pins.
Extra strong standard conveyor chain:
- Complementing our standard range of conveyor chains to British Standard, we offer this extra strong chain suitable for conveyor applications requiring ultimate tensile strength (breaking load).
- Each chain has the same dimensions as its normal counterpart.
- For example, an extra strong chain of 11,000 kilos (24000 lbs) has the same dimensions as a normal chain of 5500 kilos (12000 lbs).
- This chain is frequently used to transport animal feed and unpackaged foodstuffs such as grain, corn, wheat and raw food mixtures.
- Most of these applications use scraper conveyor systems with large spacing between sprockets. Such systems sometimes move slowly, with little or no shock loading.

All Features

Pitch: 3/4 inch; 19,05 mm
Thickness (inner plate): 1,81 mm
Product line: Renold Blue
Number of the connecting link: 12
Weight (kg/m): 1,22 kg/m
Length (pin): 21,9 mm
Height: 2,6
Thickness (outer plate): 1,81 mm
Plate height: 16 mm
Type (iso/ansi): 12B-1
Version (link): Simplex
Diameter (pin): 5,72 mm
Diameter (roller): 12,07 mm
Breaking strength: 28900 N
Inside width: 11,68 mm

Brand RENOLD
03050005
EAN 0673766034864
Supplier number RENOLD 12B1S12I

Frequently asked questions about this product

Answered by specialists

Which chain type is this cranked link compatible with?: This link fits simplex roller chains of type 12B-1 according to British Standard (BS / ISO) with a 19.05 mm (3/4") pitch.
What is the purpose of an offset link?: An offset link (cranked link or half link) allows you to connect and adjust a roller chain with an odd number of pitches.
What is the breaking load of this link?: The minimum breaking load of this 12B-1 component is 28900 N.
What are the main dimensions of this 12B-1 link?: It features a pitch of 19.05 mm, an inner width of 11.68 mm, a roller diameter of 12.07 mm, and a pin diameter of 5.72 mm.
Which Renold product series does this part belong to?: This offset link belongs to the Renold Blue product line.