R&M Materials Handling, Inc
STAGEMAKER
®
Concert Hoist
Springfield, Ohio USA
Technical Guide
:
800 955-9967
June 2009
www.rmhoist.com
RM-STGMKR-TG-2002-6-ENG.doc
42
®
7 Hoist
Motor
7.1 Features
IP55 protection
Class F insulation
Hoist motor thermal protection (for applicable configurations only)
7.2 Ambient
Conditions
The standard motor is designed for operation at an ambient temperature –10°C [14°F] and 40°C [104°F]
and a maximum altitude of 1000 meters [3280 feet].
7.3 Motor
Cooling
The hoist motors have ribbed outer frames to maximize convection cooling. Cooling fan is equipped on
the PC5 motor, which is used on the SM16, SM20 and SM25 models. The cooling fan is driven directly by
the motor shaft and is only effective when the motor is running.
7.4 Hoist Motor Thermal Protection
The motor over-temperature protection is a normally closed; automatic reset thermal protector embedded
in the stator windings and it is wired into the hoist control circuit.
7.5 Brake Coil Resistance
Main Voltage
Coil Voltage
SM1
SM2
SM5
SM10
SM16/20/25
115 90
-100
VDC
615 --- 436 ---
---
208 or 230
90 -100 VDC
615
615
436
320
145
460 190
VDC
2300
---
1650
1100 550
575 240
VDC
3400
---
2550
1800 830
Unit of resistance is ohms.
8 Hoist
Gearbox
The SM10 hoists utilize a compact planetary gear train that is totally enclosed. The planetary gears are
sintered and made with extremely accurate teeth. The SM1, SM2, SM5, SM16, SM20 and SM25 hoists
utilize a multistage helical gear train that is totally enclosed. The multistage gears are fabricated from
heat-treated steel and the teeth are machine cut. The gear case is sealed.
Hoist
Gear Type
Gear Ratio
Lubricant
Quantity
SM1 Multistage
134.2:1
Mobilgear SHC 220
0.02 liter
SM2
Multistage
Mobilith SHC 460
SM5 Multistage
43.19:1
Mobilith SHC 007
0.05 liter
SM10
Planetary
160.3:1 or 104.7:1
Mobilith SHC 007
50 grams
SM16
Multistage
113:1
Mobilgear SHC 220
1.6 liters
SM20
Multistage
113:1
Mobilgear SHC 220
1.6 liters
SM25
Multistage
145:1
Mobilgear SHC 220
1.6 liters
Mobilith SHC 007 is synthetic semi-fluid grease. It is capable of operating in extreme ambient conditions
where the ambient temperature is less than minus 13°F or hotter than 130°F.
