how to order the SMR gear box
Gearbox Coding
Gearbox coding
Initially 3 letters: SMR
Fourth letter, unit size: BCD EFG HJ
Fifth and sixth digits, ratio code: 05 13 20
Seventh digit. signifies assembly: O shaft mounted speed reducer two flange mount
Eighth digit: indicates output hub bore expected: 1 common metric bore. 2 option metric bore.
Example
Size e unit 20:one nominal gear ratio, shaft mounted with regular metric hub bore (55mm): SMR-E2001
It backstop are necessary, these must be purchase individually. and must specify the output hub rotation. E.g.: SMR-E2001 total with backstop. while in the input shaft side, the output hub’s rotation is in clockwise.
optional Extras
Backstops
A backstop may possibly be integrated on applications where 
it is needed to protect against reversal of rotation. it’s swiftly put in in the reducer, by only removing a cover plate
Note: For ratio 5: 1 gear box, backstop don’t advised.
Flange mounting
SMR case design is such the reducer can be bolted direct to supporting framework. this flange mounting use of the reducer could permit designers to omit a bearing or pillow block, however it does. of course. remove the simple belt adjustment attribute characteristic of shaft mount.
Note: Typical SMR gearbox usually do not drill mount screws. when customer need to have these sorts mount, please specify within the purchase.