Material: GG25.

Without protective jacket. Up to 50 mm bore the couplings are
manufactured according to bore tolerance zone V7. For larger bores the
fit is U7. All bores have a feather key grove according to DIN 6885/1.
Recommended shaft tolerance: f7. A bearing must be placed right beside
both ends of the coupling. Box couplings can be assembled and dismantled
in radial direction without moving the shaft in vertical direction. Standard:
Form A for shafts of the same diameter. On request: Form B for
shafts of different diameters.