| MAINTENANCE:
In order
to ensure peak efficiency and extended service life it is necessary
that blocks be inspected and maintained at frequent intervals. Consider
the following points: |
| 1. |
Inspect
products for any signs of wear or damage. These include: |
| |
a) |
Worn
sheaves, bushings, side plates, pins, hooks, or shackles. |
| |
b) |
Hook
latch for proper fit and operation. Deformed latches must be replaced. |
| |
c) |
Deformed
side plates, pins, hooks, and shackles. Worn, deformed or damaged
parts of the block and any other part used in the assembly
must be replaced. If necessary, the entire assembly needs to be removed
from service. |
| 2. |
Blocks
supplied by KULKONI, Inc. are furnished with bronze bushings. This
type of bushing is not self-lubricating. These
blocks are intended for infrequent and intermittent use with low line
speeds. Follow this lubrication schedule as
a minimum. |
| |
a) |
Moderate
use: Every 8 hours. |
| |
b) |
Intermittent
operation: Once a week. |
| |
c) |
Rotate
sheave during lubrication process. |
| Throughout this
catalog the term Working Load Limit is used. It refers to the maximum
load or force which a product is designed to support in general service
when the pull is applied in-line. There are, however, other terms
used in the industry which are interchangeable with the term Working
Load Limit. These are: |
| |
a) |
WLL |
| |
b) |
SWL |
| |
c) |
Safe
Working Load |
| |
d) |
Rated
Load Value |
| |
e) |
Resulting
Safe Working Load |
| |
f) |
Rated
Capacity |
Other terms applicable,
such as Shock Load, Proof Load, Design Factor are discussed in detail
in the GENERAL WARNINGS Section on pages 3 and 4 of the catalog.
|
IMPORTANT:
The total
load on the snatch block, and therefore also on any fitting which
is attached to the block, is usually considerably greater than the
actual load lifted. The deciding factor in determining the total load
on the block is the angle between the lead line and the load line.
|
| |
|
Multiplication
Factors For Snatch Blocks.*
|
Lead/Load
Line Angle
|
Factor
|
Lead/Load
Line Angle
|
Factor
|
Lead/Load
Line Angle
|
Factor
|
|
0°
|
2.00
|
60°
|
1.73
|
130°
|
.84
|
|
10°
|
1.99
|
70°
|
1.64
|
135°
|
.76
|
|
20°
|
1.97
|
80°
|
1.53
|
140°
|
.68
|
|
30°
|
1.93
|
90°
|
1.41
|
150°
|
.52
|
|
40°
|
1.87
|
100°
|
1.29
|
160°
|
.35
|
|
45°
|
1.84
|
110°
|
1.15
|
170°
|
.17
|
|
50°
|
1.81
|
120°
|
1.00
|
180°
|
.00
|
|
|
|
TOTAL LOAD ON BLOCK
= ACTUAL LOAD LIFTED X MULTIPLICATION FACTOR.*
*Use these multiplication
factors for single line systems only.
|
|
