Tolerances, special executions and surface treatments

Tolerances

The following standard tolerances are the ones applied in the manufacture of ROTAR® products (Ref. EN 20286):

Tolerances
round bore
H7
square bore
H8
hexagonal bore
H8
pin bore
H12
keyway
Js9

Possibility to apply different manufacturing tolerances, prior verification with our Technical Office.

SPECIAL EXECUTIONS

The technical data of our catalogue show the round bore as standard execution. Among the available machining we include:

KEYWAY

SQUARE BORE

HEXAGONAL BORE

SPLINED BORE

THREADED BORE

SOLID BORE (pilot)

SET SCREW

PIN HOLE

QUICK COUPLING

MALE PIN AND THREADED MALE PIN

YOKE WITH SPLINED PROFILE

CLAMP HUB

Standard sizes are specified in this catalogue, bores with different sizes must be checked with our Technical Office.

SPECIAL SURFACE TREATMENTS

Among the heat and galvanic surface treatments we have:

ELECTROLYTIC NICKEL PLATING
ZINC PLATING COATING
ZINC NICKEL PLATING
BURNISHING
HARDENING
PHOSPHATE COATING
HARDENING AND CARBURIZING OF SHAFT AND HUB

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