Description
Steel flange for the plastic sprockets on a 13mm short-pitch chain.
40 mm flange + fittings (de Boer)
flange + 50 mm reamed hole (JOZ)
Measuring which sprocket – length 27 links
Standard type 270 970–1000 mm (For a new chain!)
Type 280 | 1st size range 1001–1030 mm
Type 290 | 2nd oversize 1031–1075 mm
Type 300 | 3rd pitch 1076–1130 mm (this is also the standard for 13×39 chain)
Type 307 | 4th size 1131 – 1180 mm (also the 1st size for a 13*39 chain)