Chain Pulley Block
BRAD
Balanced Spur Gear Hand Chain Hoists are offered in capacities in the range from 0.5 Tonne to 5 Tonne.
FRAME:
Made from MS Rolled Steel Plates. A detachable cover totally encloses the gears.
CHAINS:
Load chains are of Alloy Steel Grade 80 to International standards.
HOOKS:
Forged alloy steel hook rotates on balls housed in top / bottom block assembly.
GEARS:
Heat-treated alloy steel pinions and case hardened spur wheels.
LOAD WHEEL :
Made from Spheroidal Graphite Iron.
BEARINGS:
Load spur wheel mounted on Needle Roller Bearings.
BRAKE:
The brake is of automatic screw and discs type.
CHAIN GUIDES :
Steel chain guide roller provided
HAND CHAIN WHEEL :
Pockets accurately cast to receive calibrated hand chain. Hand chain wheel cover prevents chain from snagging and fouling.
Technical Specifications
Capacity (Safe Working load) |
Tonnes |
0.5 |
1.0 |
1.5 |
2.0 |
3.0 |
5.0 |
Number of falls of load chain |
|
1 |
1 |
1 |
2 |
2 |
2 |
Test Load |
Tonnes |
0.75 |
1.50 |
2.25 |
3.00 |
4.50 |
7.50 |
Dimensions |
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A Hook suspension |
mm |
280 |
300 |
360 |
380 |
470 |
600 |
Hung in Trolley |
mm | 384 |
404 |
490 |
510 |
605 |
755 |
B |
mm | 142 |
142 |
178 |
142 |
178 |
210 |
C |
mm | 126 |
126 |
142 |
126 |
142 |
165 |
Hung in trolley |
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Track width Range-I |
mm | 75-125 |
75-125 |
80-140 |
80-140 |
80-150 |
100-150 |
Track width Range-II |
mm | 140-180 |
140-180 |
150-210 |
150-210 |
180-210 |
180-210 |
Minimum clear depth of track |
mm | 125 | 125 |
150 |
150 |
150 |
200 |
Built-in Units |
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Track width Range-I |
mm | 80-110 | 80-110 |
100-140 |
100-140 |
100-140 |
125-150 |
Track width Range-II |
mm | 125-180 | 125-180 |
150-210 |
150-210 |
150-210 |
180-210 |
Minimum clear depth of track |
mm | 150 | 150 |
200 |
200 |
200 |
250 |
Minimum radius of track curve |
m |
1.5 | 1.5 |
2.0 |
2.0 |
2.0 |
2.5 |
Weight: Hook Suspension unit for clear lift |
Kg |
10.5 |
11 |
16 |
15.5 |
24 |
36 |
Additional weight for extra lift | Kg |
1.7 |
1.7 |
2.3 |
2.5 |
3.7 |
5.3 |
Weight: Geared Trolley with chain for standard 3mm clear lift. |
Kg |
23 |
23 |
37 |
37 |
42 |
81 |
Effort on hand chain to raise SWL |
Kg |
16 |
32 |
37 |
32 |
38 |
42 |
Velocity ratio (movement of hand chain to load chain) |
|
40 |
40 |
52 |
80 |
104 |
160 |