700 crankshaft grinders have been conceived for regrinding of main
journals and crankpins of large crankshafts.
worktable with manual micrometer, fast automatic and automatic work
feeds controlled by a d.c. motor;
wheelhead with fast hydraulic and micrometer manual feeds, with
automatic take-up of play;
headstock and tailstock driver by d.c. motors with synchronised rotation
speed assured by an electronic control unit;
controls box adjustable in height, to facilitate the operator’s
maneuvers as well as loading and unloading of the crankshaft;
workheads featured by radial, cross and angular movements.
performing grinding machines which, apart from fast hydraulic to-and-from
movements of the grinding wheel, also feature automatic mechanical table
reversal to allow for grinding of cylindrical parts. All RTM grinding
machines come with adjustable eccentric heads which make it possible to
clamp the crankshaft between centers with lathe carrier or with self-centering
chucks. Special devices are available to make centering easier and
lining-up of journals.
and developed according to a highly innovative technology, Berco RTM 351
crankshaft grinding machines are structurally balanced, highly reliable
machines which feature top machining accuracy and versatility. These
machines are available in two version:
“A” suitable for reconditioning crankshaft of different size and
“D” which, apart from the characteristics mentioned for the “A”
version, also features a special electro-hydraulic device which allows
external grinding of cylindrical parts.
machines series RTM 270 are highly flexible thus allowing to obtain top
productivity under any working condition. These machines are available in
three different version:
“A” is a universal type of machine which can, upon request, be fitted
with a device for “plongée” grinding.
“B” is the most complete one in that it features a whole set of
hydraulic devices which make the machine suitable for reconditioning
small and medium-size sets of crankshafts.
“D”, similar to version “A”, but featuring automatic table traverse for
grinding cylindrical shafts.
grinding machines have been designed to meet the requirements of those who
have to recondition both individual crankshafts and small or medium-size
sets of crankshafts.
available in version “A”, “B”, “C”, “D”, “ES”, all featuring different
devices and automatic system. The user can of course choose the version
which best fits to his requirements in terms of cost-effectiveness. All
version come with:
with cross movement, rapidly rotating over 360° and according to pre-set
stepless regulation of the workpiece rotating speed via a potentiometer.