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Simplex Half Links
Transmissions Roller Chains British Standard Simplex (Single Row)
British Standard Simplex Half Links, also known as crank links or offset links, are essential components used to adjust roller chain length by adding a single pitch increment when a full link would be too long. These half links enable precise chain tensioning and are ideal for applications where exact chain length is critical for optimal power transmission. We stock a comprehensive range of simplex half links from trusted manufacturers Dunlop and Donghua, available in various sizes with pitches ranging from 8mm (05B-1) up to 38.1mm/1.1/2inch (24B-1). Our selection includes both standard and cottered style options for larger sizes, with specifications including inner widths from 3mm to 25.4mm and roller diameters from 5mm to 25.4mm. Whether you need to modify an existing chain drive or require replacement components for maintenance, our half links are manufactured to British Standard specifications ensuring compatibility with your existing simplex roller chain systems. If you need assistance selecting the correct half link for your application, please contact our technical team who will be happy to help.
Brand
Donghua
Donghua
Inner Width
5.72mm
5.72mm
Part Number
06B-1-HL
06B-1-HL
Pitch
9.53mm = 3/8inch
9.53mm = 3/8inch
Roller Dia:
6.35mm
6.35mm
Brand
Dunlop
Dunlop
Inner Width
5.72mm
5.72mm
Part Number
06B-1-HL
06B-1-HL
Pitch
9.53mm = 3/8inch
9.53mm = 3/8inch
Roller Dia:
6.35mm
6.35mm
Brand
Dunlop
Dunlop
Inner Width
-
-
Part Number
083-1-HL
083-1-HL
Pitch
12.7mm = 1/2inch
12.7mm = 1/2inch
Roller Dia:
-
-
Brand
Dunlop
Dunlop
Inner Width
7.75mm
7.75mm
Part Number
08B-1-HL
08B-1-HL
Pitch
12.7mm = 1/2inch
12.7mm = 1/2inch
Roller Dia:
8.51mm
8.51mm
Brand
Donghua
Donghua
Inner Width
3mm
3mm
Part Number
05B-1-HL
05B-1-HL
Pitch
8mm
8mm
Roller Dia:
5mm
5mm
Brand
Donghua
Donghua
Inner Width
7.75mm
7.75mm
Part Number
08B-1-HL
08B-1-HL
Pitch
12.7mm = 1/2inch
12.7mm = 1/2inch
Roller Dia:
8.51mm
8.51mm
Brand
Donghua
Donghua
Inner Width
9.65mm
9.65mm
Part Number
10B-1-HL
10B-1-HL
Pitch
15.9mm = 5/8inch
15.9mm = 5/8inch
Roller Dia:
10.2mm
10.2mm
Brand
Dunlop
Dunlop
Inner Width
9.65mm
9.65mm
Part Number
10B-1-HL
10B-1-HL
Pitch
15.9mm = 5/8inch
15.9mm = 5/8inch
Roller Dia:
10.2mm
10.2mm
Brand
Donghua
Donghua
Inner Width
11.7mm
11.7mm
Part Number
12B-1-HL
12B-1-HL
Pitch
19.1mm = 3/4inch
19.1mm = 3/4inch
Roller Dia:
12.1mm
12.1mm
Brand
Dunlop
Dunlop
Inner Width
11.7mm
11.7mm
Part Number
12B-1-HL
12B-1-HL
Pitch
19.1mm = 3/4inch
19.1mm = 3/4inch
Roller Dia:
12.1mm
12.1mm
Brand
Donghua
Donghua
Inner Width
17mm
17mm
Part Number
16B-1-HL
16B-1-HL
Pitch
25.4mm = 1inch
25.4mm = 1inch
Roller Dia:
15.9mm
15.9mm
Brand
Dunlop
Dunlop
Inner Width
17mm
17mm
Part Number
16B-1-HL
16B-1-HL
Pitch
25.4mm = 1inch
25.4mm = 1inch
Roller Dia:
15.9mm
15.9mm
Brand
Dunlop
Dunlop
Inner Width
19.56mm
19.56mm
Part Number
20B-1-HL
20B-1-HL
Pitch
31.75mm = 1.1/4inch
31.75mm = 1.1/4inch
Roller Dia:
19.05mm
19.05mm
Brand
Donghua
Donghua
Inner Width
7.75mm
7.75mm
Length/Type
Half Link
Half Link
Pitch
12.7mm = 1/2inch
12.7mm = 1/2inch
Roller Dia
8.51mm
8.51mm
Brand
Donghua
Donghua
Inner Width
19.56mm
19.56mm
Part Number
20B-1-HL
20B-1-HL
Pitch
31.75mm = 1.1/4inch
31.75mm = 1.1/4inch
Roller Dia:
19.05mm
19.05mm
Brand
Donghua
Donghua
Inner Width
9.65mm
9.65mm
Length/Type
Half Link
Half Link
Pitch
15.9mm = 5/8inch
15.9mm = 5/8inch
Roller Dia
10.2mm
10.2mm
Brand
Donghua
Donghua
Inner Width
11.7mm
11.7mm
Length/Type
Half Link
Half Link
Pitch
19.1mm = 3/4inch
19.1mm = 3/4inch
Roller Dia
12.1mm
12.1mm
Brand
Dunlop
Dunlop
Inner Width
25.4mm
25.4mm
Part Number
24B-1-HL
24B-1-HL
Pitch
38.1mm = 1.1/2inch
38.1mm = 1.1/2inch
Roller Dia:
25.4mm
25.4mm
Brand
Donghua
Donghua
Inner Width
17.0mm
17.0mm
Length
Half Link
Half Link
Pitch
25.4mm = 1inch
25.4mm = 1inch
Roller Dia
15.9mm
15.9mm
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