Single Reduction
Gearboxes: All gearboxes
are available in ratios of 5: 1 to 70: 1.
Double Reduction
Gearboxes: All gearboxes
are available in ratios of 100: 1 to 4900: 1.
Technical
Specification
500 rpm Input
750 rpm Input
1000 rpm Input
1500 rpm Input
MM Single reduction gearboxes
casing are built sturdily with close grained, Cast
Iron conforming FG 260 grade. The gearbox is provided
with amply designed fins with suitable fan for adequate
dissipation of heat generated. The entire design is
based mainly on BS 721 / 1963 to accuracy class A.
BIS Specifications are used wherever possible. The
gearbox design is in such way that is interchangeable
with the standard gearboxes.
The worm is of high quality casehardening steel very
accurately generated and ground finished for the better
performance. The worm wheel is of extremely high quality
phosphor bronze spin cast with a considerably substantial
section, rigidly held to a strong hub with eutectic
welding technology / Sandwich Casting.
Both worm and worm wheel shafts are mounted on quality
tapered roller / angular contact bearings with adequate
safety margin to handle the over-hung loads. Subject
to the limitation of oil temperature of 90°C under
full load, the gearbox will give a minimum gear life
of 20,000 hrs. Lubrication is positive. MM Gearboxes
require absolutely no attention at all in operation,
excepting for the oil level check once in fortnight.
Lubrication:
Recommended Lubricant ISO VG 320 I SERVO SYSTEM 320
The MM Speed Reducer lubrication
system is self contained positive and automatic at
all speeds of operation and in either direction of
rotation. Adaptable units are provided with breather,
oil level and drain plugs and it must be ensured that
these are correctly positioned as shown on the accompanying
diagram. Other units incorporate a dipstick for oil
level checking, an oil filler-cum-ventilator, and
drain plugs. Their locations are shown below.
MM Speed Reducer units are supplied without oil and
must be filled with the correct grade of lubricant
to the correct level. It is important to ensure that
the correct oil level is not exceeded as over filling
causes oil churning which results in overheating and
leakage.
