High performance dc servo motors using Neodymium (NdFeB) magnets and graphite brushes Ideal for small servo drives, and leadscrew drives Dual shafts to enable both a gearhead and an encoder to be fitted Stock no. 420-4953 has a shorter rear shaft to enable fitment of an encoder e.g. (stock no. 205-6869) using fitting kit (stock no. 420-5120) These motors can be used with GP42 42mm gearheads e.g. (stock no. 420-5041) using ftting kit (stock no. 468-4769) Suitable control module Maxon ADS50-5 (stock no. 418-5571) Speed Constant: 215rpm/V (stock nos. 323-5029 and 420-4953)