LaBounty MSD SABER SERIES SHEARS

MSD Saber SeriesTM shear models are currently available for base

machines with operating weights from 20,000- 280,000 lbs (9091 – 130,000 kg) with a range of cutting depths. Both rotating and non- rotating models are available. Rotating models feature hydraulically-

powered 360o continuous rotation. This option allows the shear jaws to be positioned to cut at virtually any angle.

MSD Saber SeriesTM models feature a cylinder-mounted speed valve to decrease cycle times and increase efficiency. This patented, spool-type valve design has proven significantly more dependable than cartridge- type regenerative systems favored by other mobile shear manufactur- ers. These shears feature high-strength, abrasion-resistant steel 

construction to assure long, uninterrupted service – even in the harshest conditions. The main pivot shaft
of every model is manufactured for long life and pivots on Stanley LaBounty’s specially designed bearings. These shears are designed to draw the material into the jaws to the point where the shear force is greatest, making them the most efficient cutting tool possible.

Mobile shears can cut a wide variety of materials including I-beams, H-beams, channel iron, steel plate, pipe, round stock, wire, rebar, concrete, etc. They are ideal for scrap processing, demolition work, road and bridge reconstruction, and jobs where torching is not feasible or possible.

GLOSSARY

Accumulator

Used in a hydraulic rotation kit to store hydraulic fluid to drive the rotation motor.

Adjustment Plates

Custom-made plates that precisely adjust the lower cutting blades to the upper blades. These plates make it possible to achieve a uniform blade gap on the shear.

Apex

The point where the primary and secondary cutting blades come together.

Blade Gap

The gap between the upper and lower cutting blades as the blades bypass. A very important item that must be maintained regularly to prevent material from jamming in the blades.

Blade Shims

Thin metal shims used to adjust the position of the lower cutting blades to maintain a proper blade gap. Blades should never be shimmed out farther than 0.13" (3.3 mm).

Boom Pivot Build Up

Part of the shear mounting bracket that attaches to the excavator’s boom tip (second member mounts).

Build Up

Welding process where worn off parent material is replaced with new metal. A very important maintenance procedure that must be performed regularly throughout the life of the shear.

Control Valve Manifold

Used in the hydraulic rotation kit to direct flow to the accumulator and back to the hydraulic motor.

Cross Blade

A replaceable component located on the inside of the lower shear cross plate. The cross blade is an easy-to-replace wear part that reduces maintenance time in the piercing area.

Cross Plate

Plate located at the front of the lower shear which ties the two halves of the lower shear together. The cross blade is contained in the cross plate. Requires regular build-up and hardsurface.

Crossover Relief Valve

A hydraulic component used in a rotating shear that limits the amount of hydraulic pressure sent to the rotation assembly. The crossover is preset at the factory and must not be tampered with.

Cutting Blades

The blades in the upper and lower shear jaws that shear materials as they bypass. The primary blades are those in the upper and lower jaws that are nearest to the shear throat. The secondary blades are those that are farthest from the shear throat.

Cylinder Connection

Part of the shear mounting bracket that articulates the tip-up function of the shear. The cylinder connection attaches to the excavator’s stick cylinder (second member mounts).

End Cap

Protects and adjusts the main pivot group of the shear. The end cap is a vital component to the adjustment of the main pivot group and must not be removed without first consulting the LaBounty Customer Service Department.

Flow Control Valve

A hydraulic component used in a rotating shear that meters out the hydraulic fluid from the rotation motor.The flow control should be set to limit the rotator from spinning faster than 1- 2 revolutions per minute.

Front Cylinder Pin

The pin that attaches the shear cylinder barrel end to the upper shear.

Grain of Material

The direction that the parent material was initially rolled at the steel mill. It is very important when hardsurfacing any part of the shear to weld with the grain of the steel. Cross-grained hardsurfacing has the tendency to start cracks in the base material.

Guide Blade

A replaceable component located opposite the cutting blades in the lower shear. The main purpose of the guide blade is to support the upper shear during the cutting cycle. This is a very important maintenance item.

Guide Blade Shims

Thin metal shims used to adjust the guide blade out to maintain the proper guide blade gap. Shims come in a designated set that determines when the guide blade will be indexed or replaced.

Guide Blade Gap

The gap between the front wear plate and the guide blade as the upper shear is cycled into the lower. This is an important maintenance item to ensure longevity of the shear’s structure.

Hardsurface

Welding process for protecting the parent material of the shear jaws. The hardsurface acts as a wear surface.

Hub Shims

Thin metal, circular shims used in the main pivot group of LaBounty shears. Hub shims provide factory adjustment of the upper shear for close blade tolerance.

Lifting Points

Small holes in the top of the shear to be used when mounting or transporting the shear. There are two holes near the front of the shear and one lug at the rear. These points must never be used for cable hanging the shear for cutting operations.

Lower Piercing Area

The frontal area of the lower shear through which the upper piercing tip passes. This area contains the guide blade and the cross blade.

Lower Shear

The lower stationary jaw of the shear. The lower shear contains the lower cutting blades, the guide blade, and the cross blade.

Lower Wear Plates

Replaceable, abrasion-resistant wear plates that protect the cross plate of the lower shear.

Main Bearing

Hardened bushings that the main shaft of the shear rotates on during operation. There are two main bearings, bolted in on both sides of the main pivot group.

Main Pivot Group

High tolerance area of the shear that contains the two main bearings, two thrust washers, main shaft, hub shims and two end caps.

Main Shaft

The shaft on which the upper shear pivots causing the shearing action of the attachment.

Manifold Block

Hydraulic block that directs the excavator’s hydraulic flow to the shear cylinder and rotation assembly.

Motor

Hydraulic rotation component that drives the turntable bearing or planetary gear box on rotating shears.

Mounting Bracket

The bracket at the rear of the shear that allows it to be attached to the excavator. For a typical second member mount, the mounting bracket pins to the excavator boom tip and stick cylinder.

Planetary Gear Box

Hydraulic rotation component on larger rotating shears. The planetary gear box rotates the body of the shear with hydraulic motor. The output shaft of the component directly drives the turntable bearing of the rotating shear.

Rear Cylinder Pin

Pin that connects the rod end of the shear cylinder to the rear of the shear. The rear cylinder pin must be greased according to the required maintenance.

Rotation Assembly

Hydraulic drive assembly allows full 360° continuous rotation of the shear. This option gives greater positioning capabilities when processing with the mobile shear.

Saber Tip

Bolt-on, two-way indexable piercing tip/wear plate found at the top of the upper jaw.

Shear Cylinder

Hydraulic cylinder that powers the cutting action of the shear. The barrel end of the cylinder attaches to the shear’s upper jaw and the rod end attaches to the rear cylinder lugs. The cylinder rod stays protected from damage inside the shear.

Shear Stick

The main body of the shear that includes the lower shear. This weldment must be regularly inspected for damage.

Slide Screw

Adjustable components installed through both sides of the stick. Aligns and supports the upper shear for a uniform blade gap.

Speed Valve

Regenerative hydraulic valve mounted on the cylinder of LaBounty® MSD Saber Series shears that increases the shear closing speed (cylinder extend function) when the shear is not under a load, thereby reducing cycle times and increasing efficiency. Stanley LaBounty uses a spool-type speed valve design for better durability over cartridge-type regenerative valves.

Swivel Manifold

Allows continuous hydraulic flow to the shear cylinder during rotation of shear without twisting hoses.

Thrust Washer

Main pivot group component that is located inside the end caps as a wear part for the main shaft.

Tie Rod

Rod that extends through the center of the main pivot group. The tie rod adds lateral support to the main pivot group.

Throat

Area of both the upper and lower jaw near the main pivot where the primary blades are located. The throat area is the optimum area for shearing material. The shear is most powerful on the primary blades nearest the pivot point.

Turntable Bearing

Rotary gear bearing used in rotating shears. It is mounted to the shear stick and is driven by hydraulic components in the upper head or mounting bracket. This bearing is sometimes called a slewing ring.

Upper Head

Mounting bracket portion of a rotating shear. Attaches to the turntable bearing that attaches to the rear of the shear stick. The upper head contains the hydraulic manifolds and the swivel manifold.

Upper Shear

Movable jaw of the shear that contains cutting blades, the Saber TipTM, and the wear area for the slide pucks. The shear cylinder articulates the upper shear into the lower shear to perform the cutting action of the shear.

Wear Parts

Consists of the cutting blades, guide blade, cross blade, and Saber TipTM. These parts can be easily replaced to refresh the System wear areas of the shear jaws. Dramatically increased surface areas on these wear parts provide better wear and less downtime for maintenance.