Neo-250, Lifting guidelines (round bars & pipes), Values are based upon aisi 1020 steel – Walker Magnetics NEO-HV SERIES User Manual
Page 15: Type of surface condition
15
O.S. Walker Inc., NEO Permanent Lifting Magnets
NEO-250
LIFTING GUIDELINES
(ROUND BARS & PIPES)
Values shown are for maximum rated capacities when operating instructions and warnings are
followed.
VALUES ARE BASED UPON AISI 1020 STEEL
Higher alloy steels and other magnetic materials will require further reductions of these rated
capacities (See page 11 for the Guidelines for the reduction of the Rated Lifting Capacities.)
NEVER EXCEED EITHER THE MAXIMUM LENGTH or WEIGHT SHOWN FOR EACH
ROUND BAR/PIPE DIAMETER, WALL THICKNESS & TYPE OF SURFACE CONDITION
Round
Bar/Pipe
Diameter
Inches
Pipe
Wall
Thickness
Inches
TYPE OF SURFACE CONDITION
CLEAN & SMOOTH
Similar to a Flat
(32 micro-inch RMS)
Ground Surface
.000” Max. Air Gap †
RUST OR SCALE
Similar to a Flat Hot Rolled
Steel Surface
.010” Max. Air Gap †
(.254mm)
IRREGULAR OR ROUGH
Similar to a Flat Smooth
Cut File
.020” Max. Air Gap †
(.508mm)
Maximum Length
Inches
Maximum Load
Pounds
Maximum Length
Inches
Maximum Load
Pounds
Maximum Length
Inches
Maximum Load
Pounds
7”
(178mm)
MAX. DIAM.
1/4”
30”
45
21”
32
18”
27
1/2
47”
137
35”
102
28”
82
1”
42”
225
28”
152
19”
102
SOLID BAR
25”
275
16”
180
10”
115
6”
(152mm)
1/4”
35”
45
25”
32
21”
27
1/2”
56”
137
41”
102
33”
82
SOLID BAR
34”
275
22”
180
14”
115
5”
(127mm)
1/4”
42”
45
30”
32
25”
27
1/2”
68”
137
50”
102
41”
82
SOLID BAR
49”
275
32”
180
20”
115
4”
(101mm)
1/4”
53”
45
38”
32
32”
27
1/2”
88”
137
65”
102
52”
82
SOLID BAR
77”
275
50”
180
32”
115
2 3/8”
(60mm)
MIN. DIAM.
1/4”
95”
45
67”
32
57”
27
1/2”
137”
137
122”
102
98”
82
SOLID BAR
137”
170
137”
170
91”
115
NEVER LIFT ROUND BARS OR PIPES WITH:
A diameter LESS THAN 2.375 Inches or
A diameter GREATER THAN 7 Inches or
A wall thickness LESS THAN 1/4” (6.4mm) or
A length greater than shown in the Lifting Guidelines above
(Absolute maximum length 137” (3500mm))
† Air Gap = nonmagnetic separation between magnet’s lifting surface and load.