CHIARAVALLI
27
CHM - INTRODUCTION - LUBRICATION
INTRODUCTION
The worm gears made by Chiaravalli Group S.p.A. are square and are considerably versatile
for mounting. The machining of the components, carried out using numeric control machines,
guarantees maximum precision for the restricted tolerances, producing a product that will remain
reliable over time.
The groups are constructed with aluminium casings from sizes 025 to 090, while the sizes 110, 130
and 150 are made from cast iron.
All of the bodies are painted with RAL 9022 aluminium colour to protect the parts from aging and
to give better protection against microblowholes that may be present in the aluminium.
The gears are supplied with at least one filling plug that is also used during testing to check for
possible leaks.
A connection flange allows two gears to be combined in order to obtain high gear ratios.
Four sizes of CHPC pre-stage gears are available to pair with the gears; these are also constructed
in aluminium and are painted like the worm gears.
All of the groups are supplied with a lubricant whose characteristics are described in the following
table.
LUBRICATION
CHM 025/090
CHM 110/150
CHPC
Lubricant
Synthetic
Mineral
Mineral
Mineral
Synthetic
°C ambient
-25°C/+50°C
-25°C/+50°C
-5°C/+40°C
-15°C/+25°C
-25°C/+50°C
ISO
VG320
VG320
VG460
VG220
VG320
AGIP
TELIUM
BLASIA 320
BLASIA 460
BLASIA 220
TELIUM
VSF 320
VSF 320
SHELL
TIVELA
OMALA
OMALA
OMALA
TIVELA
OIL S 320
OIL 320
OIL 460
OIL 220
OIL SC 320
IP
TELIUM VSF
MELLANA
MELLANA
MELLANA
TELIUM VSF
OIL 320
OIL 460
OIL 220
LUBRICATION
The size 025 to 090 gears are supplied complete with synthetic oil and therefore do not require
any maintenance.
The size 110, 130 and 150 gears are supplied with the quantity of mineral oil foreseen for the
B3 assembly position. It is the client’s responsibility to adapt the quantity of oil to the assembly
position and in addition, to substitute the filling plug, supplied closed for transport reasons, with
the one equipped with a hole attached to the gear.
If the breather plug is not installed it may create internal pressure with a consequent leakage of
oil from the oil seals.
For the sizes 110, 130 and 150 we recommend that the oil is changed after the running in period,
approx. 300 working hours.
2D and 3D drawings available on the web site
Quantity, availability and prices with Chiaravalli B2B