Extended pitch roller chain in box
Description
Extended pitch roller chains are commonly used in conveyor belts, material handling and agriculture. Conventional extended pitch roller chains are also called double pitch roller chains. This is because they are double pitch versions of normal roller chains. Their ISO designation consists of three digits, a number two is written in front of the normal ISO roller chain designation. Example: 208B equals 08B roller chain with one inch (25.4mm) division instead of half an inch. Their ANSI designation consists of four digits. ANSI roller chain designations consisting of three digits (e.g. ANSI 120) are preceded by a two. ANSI designations consisting of two digits (e.g. ANSI 40) are preceded by a two and filled with a zero to obtain a four-digit designation. Example: 210A = A2050 is equal to a 10A roller chain with a double pitch, so a roller chain with a pitch of 31.8 mm instead of 15.88.
Design of roller chains with extended ISO pitch
- 08B → 208B
- 10B → 210B
- 12B → 212B
- 16B → 216B
- 20B → 220B
Design of roller chains with extended ANSI pitch
- 08A → 208A = A2040
- 10A → 210A = A2050
- 12A → 212A = A2060
- 16A → 216A = A2080
- 20A → 220A = A2100
- 24A → 224A = A2120
With ANSI chains, not only chains with normal pitch but also chains with extended pitch can be reinforced. The reinforced version is identified by the letter H. Example: A2040H or 2040H
