ROCK EXOTICA MHP55 Instructions For Use

Instructions for Use
Material Handling and Load Lifting
Omni-Rigging Block
MHP55 - 2.6"
MHP58 - 4.5"
Meets or exceeds requirements of ASME
B 30.26-15
WARNING!
EXPERT USE
ONLY
Manufactured in USA using
domestic & foreign materials
Register your product at:
www.rockexotica.com/register
These activities are inherently dangerous and carry
a significant risk of injury or death that cannot be eli-
minated.
These instructions DO NOT tell you everything you
need to know.
Always know the total load on the primary load fitting
Do not use unless you can and will understand and
assume all risks and responsibilities for all damage/
injury/death that may result from use of this equipment
or the activities undertaken with it.
Everyone using this equipment must be given and tho-
roughly understand the instructions and refer to them
before each use.
Do not use around electrical hazards, moving machi-
nery or near sharp edges or abrasive surfaces.
We are not responsible for any direct, indirect or ac-
cidental consequences or damage resulting from the
use of our products.
Stay up to date! Regularly go to our website and read
the latest user instructions.
WARNING: This product can expose you to chemicals
including nickel acetate, which is known to the State of
California to cause cancer. For information go to
WWW.P65Warnings.ca.gov
rockexotica.com
Rock Exotica LLC · POB 160470 · Freeport Cen-
ter, E-16 · Clearfield, UT 84016 ·
USA · 801 728-0630
MHP55500 05/2023 F
Rock Exotica 3-year guarantee Rock Exotica 3-year guarantee
If your Rock Exotica product has a defect due to workmanship or
materials please contact us for warranty service.This warranty
does not cover damages caused by improper care, improper use,
alterations and modifications, accidental damage or the natural bre-
akdown of material over extended use and time
.
Fig. 2
Button must be fully
extended to give full
strength & keep the
sideplate closed.
Top chamfer of button
should be out as
shown.
End of button sticks
out from sideplate
about .08" (2mm).
Manufacture Date
Year, Day of Year, Code
Serial Number for
the Day
09001A001
MHP55
(2.6")
Inner Sheave
2.6" (66mm)
Diameter
Outer Sheave
2.95" (75mm)
Diameter
Rope ≤ ..." Ø ≤ ...''(... 3/8" - 1/2"
mm) (9.5mm-13mm)
WLL 4,500 lbf
Height 7.53" (191mm)
Width 3.6" (92mm)
Weight 1.9 lb (.85kg)j
Rope Type Fiber
Meets ASME B 30.26-15
! MANDATORY LOCKING PROCEDURE!
The sideplate must be closed and locked with the button fully
extended, or strength will be greatly reduced and the rope may fall
out with catastrophic results. You must understand how the sideplate
& locking button work & must faithfully do the following every time
you use it:
1. Visually confirm the sideplate is fully closed and the locking button
is fully extended.
2. Test the sideplate by attempting to rotate it to confirm by touch
that it is locked.
Do not allow anything to contact the button when in use. Regularly
check that the sideplate is locked and the pulley is positioned proper-
ly. If the pulley cannot be kept in sight, use a conventional pulley.
Fig. 3b
ATTENTION!
(A) For orientation only. Not for high speed or multi-rotation. Do not
use with wire rope or steel cable. Verify swivels rotate freely. (B)
Verify spring pins or set screws are in place and have not been
removed. (C,D,E,F) Before, during and after use, ensure bolt has not
loosened by checking bolt with your fingers and making sure swivel
top does not move up or down. Periodically, ensure bolt has not loo-
send by checking bolt with pliers. MHP58: Remove cap from swivel
top with o-ring hook and inspect bolt as mentioned above.
C
A
B
D E
NO!
NO!
F
NO!
Fig. 4
Fig. 3a
Thank you for purchasing this Rock Exotica product. The Omni-Rigging
MHP58
(4.5") Block combines a pulley with a swivel and offers tremendous advantages.
It allows installation and removal of the rope while the pulley is still ancho-
red, which prevents dropping it & is often easier when rigging mechanical
3.75" (95mm)
advantage systems. It does require that the user understand how it works
and takes responsibility for making sure the sideplates are closed & loc-
4.5" (114mm) ked. It also requires that the user be competent and familiar with using
pulleys for lifting operations.
3/8" - 3/4"
DEFINITIONS
(9.5mm-19mm)
Working Load Limit: the maximum mass or force which the product is
designed to support. The Working Load Limit is calculated by dividing the
6,000 lbf
minimum breaking strength by an appropriate design factor.
Working Load Limit is used interchangeably with the following terms:
Rated load, SWL, WLL, Safe working Load, Resultant safe working load.
11.5" (292mm)
Design Factor is the ratio of the minimum breaking strength to the working
load limitTotal Load: In a single pulley, the total load on the primary load fitting
5.75" (146mm)
will vary depending on the angle of the incoming and exiting line. Figure 1
indicates the factor to be multiplied by the weight of the load for a given rope
angle. For example, a 0 degree angle has a factor of 2. Therefore the total
5.8 lb (2.6kg)
load on the primary load fitting is 2x the load that is being raised or lowered.
Fiber This is also illustrated on the pulley. For more information on angle factors
multipliers consult ASME B 30.26 or seek specific training from a qualified
source.
Inpsection Guide:
Button & Retaining Set Screw
A
B
C
a Set screw location, single pulley
b Set screw location, double pulley
c Button location
Before and after each use, do the following inspections below.
Button Inspection:
Button must be fully extended to give full strength and keep the sideplate
closed. Top chamfer of button should be out as shown.
End of button sticks out from sideplate about .08" (2mm).
Set Screw Inspection:
Each set screw is located above the button(s). The top of the set screw must
be even with or below the surface of the of the body of the pulley. If the set
screw is covered by epoxy or sealant, the sealant must be even with or below
the surface of the body of the pulley.
Follow all other instructions contained in this technical notice.
Example
Primary load
P51 Omni 1.5"
Exploded
Swivel Top with
View
Steel Washer on
Milled from
Nylon Bushing
Solid Alloy
Button
Ball Bearing Sheave
Sideplate
Fig. 5
Continued on reverse
LINE PULL
Angle Factor Mulitpliers
Angle° Factor
0°
10°
20°
30°
40°
45°
50°
60°
70°
80°
90°
Working Load Limit: Is based on a 4:1 (MHP55) or 5:1 (MHP58) design factor.
Cycle count, lift dynamics and type of lifting system may require an increased
design factor and thus a lower WLL. The WLL may also be affected by over-
loading, product wear, modification, misuse, and environmental factors. You
must decide if the design factor is sufficient in your situation or if you need to
lower the WLL. Be aware that the WLL of your system may be less than the
WLL of the block depending on the rope and other components in the system.
Always follow manufactures WLL recommendations for the components of
your system.
Intended Use: The Omni-Rigging Block is intended to be used for material
handling and load lifting applications. Only the loading shown as "OK" is allo-
wed. Always verify proper positioning of your system and components. The
block must be free to align with the load, any restraint is dangerous.
Prusik Use - Caution! Prusiks must always have an experienced person
tending them. Never allow a jammed Prusik to be pulled in between the
sideplates. This can bend or break the pulley and allow the rope to fall out!
Breakage Hazard: Do not let an object in between the sideplates and never
rig your system so that the pulley is forced against something that could bre-
fitting ak or open the sideplate, allowing the rope to fall out.
To Open Sideplate: Depress the button and rotate sideplate counterclockwi-
se. It should stop at the 2nd button detent. In this position the strength is
severely reduced, but the rope will not fall out as easily as it can in the fully
open position. To fully open, just depress the button again and rotate.
To Close Sideplate: Rotate sideplate past the 2nd detent to the fully closed
position. Verify the button extends fully through the hole and test that the
sideplate is really locked and secure. You should be able to close it one-hand-
ed, but the components will last longer if you depress the button a little to help
it when closing. If the sideplate is not fully locked by the button, the strength
will be severely reduced.
In Use: Do not allow anything to press button and accidentally unlock side-
plate. Do not allow anything to pry the sideplates apart, or opening or breaka-
ge may occur. Do not side load.
Pinching Hazard: Rope travelling through a pulley can suck in hair, fingers,
Rope Sizes clothing, etc., causing injury and jamming the pulley. Guard against this.
Inspect Before & After Use: Check all parts for cracks, deformation, corro-
sion, wear, etc. Verify that the swivel top rotates normally and the axle screw
WLL
has not loosened. Verify smooth rotation of the sheaves and security of the
axle screw. Verify that the sideplate rotates normally and the button operates
Fig. 6
properly. The button must not be impaired by dirt, ice, corrosion, etc. Verify
smooth rotation of the sheave.
Inspection During Use: Regularly inspect and monitor your system, confir-
ming proper connections, position, fully locked sideplates and fully extended
buttons.
Detailed Inspection: In addition to inspection before, during and after each
use, a detailed periodic inspection by a competent person must be done at
least every 12 months or more frequently depending on amount and type of
use. The hardware shall be examined for conditions listed in ASME 30.26-
5.8.5 Consult a qualified person or the manufacturer if there is any question as
to the frequency of periodic inspections. Make a copy of these instructions
and use one as the permanent inspection record and keep the other with
the equipment. It is best to issue new gear to each user so they know its
entire history.
Removal Criteria: ASME B30.26-5.8.
Rigging blocks shall be removed from service if conditions such as the fol-
lowing are present and shall only be returned to service when approved by
a qualified person:
(a) missing or illegible identification
(b) misalignment or wobble in sheaves
(c) excessive sheave groove corrugation or wear
(d) loose or missing bolts or other fasteners and retaining devices
(e) indications of heat damage, including weld spatter or arc strikes
(f) excessive pitting or corrosion
(g) bent, cracked, twisted, distorted, stretched, elongated, or broken load
bearing components
(h) excessive wear, nicks, or gouges
(i) a 10% reduction of the original or catalog dimension at any point
(j) excessive damage to load-bearing threads
(k) evidence of unauthorized welding or modifications
Fig. 1
PRIMARY LOAD
FITTING
ANGLE
LINE PULL
Angle° Factor
2.00 100° 1.29
1.99 1.15
110°
1.97 120° 1.00
1.93 130° .84
1.87 135° .76
1.84 140° .68
1.81 .52
150°
1.73 160° .35
1.64 170° .17
1.53 180 .00
1.41 — —