德国威浦曼（Wippermann）公司成立于1893年，最初是致力于生产高品质的自行车和摩托车链条，至今仍然是世界上自行车和摩托车行业链条的供应商。现在的产品已延伸至整个工业领域，不仅包括链条（滚子链、输送链、板式链、弯板链）、链轮、还有其专业的链条工具和附件。产品破断载荷，极限拉伸能力，疲劳极限等所有参数指标均高于DIN标准。同时推出的免维护系列链条，该链条滚子与套筒之间有的高分子复合材料，能够减少滚子与套筒之间的摩擦，并且内外链板经过的热处理工艺，极大的改善和增加了链条的抗拉伸能力，增强了产品的使用寿命。WIPPERMANN已成为代表链条和链轮产品技术品质的标志，是高品质传动系统的。

双节距滚子链链轮
Sprockets for double pitch roller chains according to DIN 8181 (ISO 1275)

Sprockets for double pitch roller chains are available in a single or double-toothed design. Single-toothed sprockets for double pitch roller chains have the same behaviour as standard sprockets for roller chains according to DIN 8187 (ISO 606). Due to the larger chain pitch of double pitch roller chains it is possible to increase durability by toothing modifications.

Double-toothed sprockets are offered either in full or in half tooth steps. Full tooth steps are double-toothed so that only a part of the teeth is used effectively. The advantage is that when the chain is exchanged the so far unutilised teeth can be used then, and the sprockets can remain in the system.
In order to increase the life cycle of a chain drive even more, sprockets can be manufactured with half tooth steps. With every rotation the chain joints move one tooth ahead in the meshing. This reduces the wear of the chain and the tooth edges. This kind of toothing is often used when, due to the respective design, only minor deflections(偏向) can be realised.
Our sprockets and plate sprockets are made of C 45, stainless steel, and special materials with a material strength of between 500 N/mm2 and 600 N/mm2. Apart from hardened toothing, we also supply surface treated types.
Double pitch roller chains are manufactured according to the respective order and customers’ specifications.
On request we supply sprockets with:
◇ ore and grove
◇ Tapped and pin holes for bore
◇ Tapped and pin holes for bore on pitch circle
◇ Slot holes on hub and hole circle