You selected:

Click to enlarge image(s)

Built to the same rugged standards as the H40 Incremental Heavy Duty encoder, this unit features an absolute encoder output up to 13 bits of resolution. Designed to take the rigors of physically demanding environments, the H40 has a heavy-duty housing, a 100+ pound bearing, and internal shock absorbers.
When you need absolute position in a really tough environment— the H40 absolute is what you need.

Product Specification Sheet

BEI H40 Absolute Shock Proof Encoder