11
TYPICAL HYDRAULIC CIRCUITS
NOTE:
The hydraulic circuits shown below are representative of typical Braden and Braden-Gearmatic hoists with
single and two-speed hydraulic gear motors and brake valves. Options and accessory equipment may result in
changes to the circuits shown. If there are any questions regarding the hydraulic circuit, refer to information sup-
plied by the original equipment manufacturer, or contact the Braden Product Support Department at the number
given in the Foreword of this manual. (ALWAYS have the hoist model and serial number when contacting the fac-
tory.)
Dry
Lubed
Dry
Lubed
Dry
Lubed
Dry
Lubed
Torque (LB-FT)
Grade 5
Grade 8
1/4
20
28
5/16
3/8
18
24
16
24
7/16
1/2
9/16
5/8
8
6
12
9
17
13
24
18
45
35
70
50
23
31
50
35
80
110
80
150
110
110
55
75
150
115
210
160
14
20
13
20
12
18
11
18
265
200
Torque (LB-FT)
Grade 5
Grade 8
380
280
7/8
9
14
420
325
600
450
3/4
10
16
680
1 1/8
7
12
790
590
1290
970
1
8
14
640
7
12
1120
835
910
485
1460
1820
1360
1 3/8
6
12
1460
1095
2385
1790
1 1/4
3160
2370
RECOMMENDED FASTENER TORQUE
Bolt Dia.
Inches
Thds Per
Inch
Bolt Dia.
Inches
Thds Per
Inch
1 1/2
6
12
1940
PREVENTIVE MAINTENANCE
A regular program of preventive maintenance for your planetary hoist is required to minimize the need for emer-
gency servicing and promote safe, reliable hoist operation.
The user of any Braden hoist product is responsible for hoist inspections, testing, operator training and the main-
tenance procedures defined below, with the frequency being dependent upon the severity of the hoist duty cycle
and the thoroughness of the maintenance program. The hoist duty cycle is defined as follows:
• Infrequent usage - Any hoist used less than 10 hours per month
• Frequent usage - Any hoist used in excess of 10 hours, but less than 50 hours per month
• Heavy usage - Any hoist used in excess of 50 hours, but less than 150 hours per month
• Severe duty - any hoist used in excess of 150 hours per month, or where 80% of the loads exceed 75% of the
hoist rated capacity.