• Denharco Delimbers.
    Built Tough for Big Timber.

    No other processing tool measures up to the superior design of Denharco delimbers. Precise measuring from a lineal steel boom assures you of unparalleled accuracy and efficiency. These tough workhorses are at their best with large diameter timber, heavy limb applications, irregular logs, multi-stem processing, and multiple sorting. Count on them to help you extract the most value from every stem.

    Read On

DM4550 MONOBOOM DELIMBER

Fast and robust, the Denharco monoboom delimber is built to meet the highest industry standards. The powerful winch/cable drive system, equipped with variable displacement traction motor and parking brake, allows the DM4550 the ability to optimize power and speed according to your momentary demands. This quiet and easy-to-maintain system ensures operating and measuring precision, while maintaining feed speed of 14’/sec.

Its 12” x 12” monoboom is made of a special alloy intended for extensive and rigorous work, as well as offering impressive delimbing reach of over 45’ for easy reach and sorting capabilities. Curtain-style hose hangers and auto-tensioning drive cables are designed to extend the working life of those critical components that succumb to operational wear.

Pierce DM4550 Monoboom Delimber

DT4550 TELESCOPIC DELIMBER

The Denharco telescopic delimber combines the finest elements of our DM4550, with features such as vertical sliding blocks (in lieu of conventional rollers) for extended service life, and minimum tail swing for tighter landings and work areas. Perfect for confined spaces, the DT4550 handles stems with speed and precision. It offers an impressive delimbing reach of over 54’, and feed speed of 14’/sec. Impressive performance in the extreme timber and conditions of North America.

Pierce DT4550 Telescopic Delimber

DM4150 MONOBOOM DELIMBER

The DM4150 offers you a top-of-class monoboom delimber suited for heavy duty processing demands. It is equipped with a variable displacement drive motor and quiet cable drive system designed to optimize power and speed according to your momentary demands. It also comes with a selection of saw options to suit your application, as well as delimb arms with ideal shape for clean delimbing.

The DM4150 has all the benefits of our flagship DM4550 monoboom delimber, yet equipped with our more simplified controller electrical system.

Pierce DM4150 Monoboom Delimbers

DT4150 TELESCOPIC DELIMBER

The DT4150 features its modular design to accommodate a variety of heavy duty processing applications, minimum tail-swing for tight landings and work areas, impressive 16 ft/sec delimbing speed, and excellent stem handling capabilities – from several small diameter logs, to large diameter single stems. This makes the DT4150, suited for 20-21 metric ton machines, the most capable telescopic delimber available.

The DT4150 has all the benefits of our DT4550 telescopic delimber, yet equipped with our more simplified controller electrical system.

Pierce DT4150 Telescopic Delimber

MODULAR DESIGN

Denharco delimbers share compatible heavy duty structures that are at the heart of their modular design. These delimbers also share a selection of common head features, as well as the same electrical system, saw systems and major components offering benefits of commonality, ease of maintenance and support, as well as operational similarities.

SAW TO SAW

Saw To SawCut and merchandise your log without losing hold. With the butt saw located behind the rear hold arms, take advantage of accurate measuring while eliminating extra motion and the need to rehandle with ‘saw to saw’ measuring.

FEATURES

Compare the features of the Denharco DM and DT Delimbers.

DELIMBER FEATURESDMDT
MECHANICAL
Modular construction supports all major mechanical, electrical & hydraulic components.
High strength, heavy duty 12” x 12” monoboom. High strength, heavy duty 6” x 8” inner boom.
Maintenance free floating trough with support roller.
Retractable butt plate with cushioned cylinder and integrated hydraulics.
Tunnel-style base boom designed specifically for each carrier model.
Adjustable vertical sliding blocks for carriage.
2 fixed tandem rollers and adjustable vertical rollers on carriage.
2 adjustable horizontal rollers on carriage.
1 adjustable horizontal roller on main boom.
Tandem rollers on main boom.
Expander main pin used at interface between carrier & delimber.
ARMS
Mono-stem cast arms for large diameter, single stem handling.
Multi-stem arms for multiple stem handling (optional).
Bolt-on arms for easy replacement.
Front grab arms properly position log in trough.
TRANSPORTATION
Mechanical system for transportation.
Hydraulic system for transportation: optional.
DRIVE SYSTEM
Quiet & easy to maintain winch drive system with auto tensioning.
Variable displacement motor.
Powerpull boom drive system enables momentary increase in boom power.
Heavy duty drive cables.
SAW SYSTEMS
Swing out top saw door for easy saw maintenance.
Supercut .404” pitch top and butt saws with auto-tensioning and saw safety electrical devices.
Supercut 3/4” pitch top and butt saw with auto-tensioning and saw safety electrical devices: optional.
Supercut butt saw located on head with auto-tensioning and saw safety electrical devices: optional.
Delimb knives with removable blades.
HYDRAULIC SYSTEM
“Soft clamp” proportional pressure.
Automatic stroke-end speed reducer.
Simple and proven.
Protected, enclosed delimbing head hydraulics.
Lock valves on delimb and hold arm cylinders.
Curtain-style hose hangers.
Shockless relief system designed to cushion hydraulic overpressures.
3” diameter cushioned hold arm cylinders (optional).
4” diameter cushioned hold arm cylinders (optional).
4” diameter delimb arm cylinders (optional).
4 1/2” diameter delimb arm cylinders (optional).
MEASURING SYSTEM
Z5 Measuring System.
Initiate measuring with photocells or butt plate.
Photocells located in trough for automatic positioning.
SERVICEABILITY
Swing out top saw door for easy maintenance.
Denharco Delimbers Features

VIEW AND DOWNLOAD THE DENHARCO DELIMBERS BROCHURE.

SPECIFICATIONS

Compare the specifications of the Denharco DM and DT Delimbers.

Features and technical data indicated may vary depending on carrier and options selected and can be modified without prior notice.
SPECIFICATIONSDM4550DT4550DM4150DT4150
DIMENSIONS
MINIMUM REACH13’ 6″
4.11 m
4’ 10”
4.52 m
14’10”
4.52 m
14’10”
4.52 m
MAXIMUM REACH49’ 4″
59’ 4”
59’ 4”
59’ 4”
59’ 4 ”
18.08 m
59’ 4 ”
18.08 m
TAIL SWING40’ 1”
12.22 m
28’
8.53 m
40’ 1 ”
12.22 m
28’
8.53 m
TRANSPORT HEIGHT WITHOUT PULLEY SUPPORTMACHINE DEPENDENTMACHINE DEPENDENT12’ 6 ”
3.81 m
12’ 6 ”
3.81 m
MAXIMUM DECKING HEIGHT11’ 7″
3.53 m
11’ 11”
3.63 m
11’ 7″
3.53 m
11’ 7″
3.53 m
WEIGHT (in operating mode) Includes: Top butt saw, butt plate, transport position, hoist cylinders24,400 lb
11,091 Kg
25,250 lb
11,477 Kg
24,400 lb
11,091 Kg
25,250 lb
11,477 Kg
DELIMBING
DELIMBING CAPACITY22″
56 cm
24”
61 cm
22″
56 cm
24″
61 cm
HANDLING CAPACITY (TUNNEL DIAMETER)32″
81 cm
32”
81 cm
32″
81 cm
32″
81 cm
SAW SYSTEMS
TOPPING KNIVES: CUTTING CAPACITYNA8” 20 cm8″
20 cm
TOPPING SAW (.404″): CUTTING CAPACITY24”
61 cm
21”
53 cm
24″
61 cm
21″
53 cm
TOPPING SAW (3/4″ PITCH): CUTTING CAPACITY25”
64 cm
NA25″
64 cm
BUTTING SAW ON DELIMBING HEAD (.404″)24”
61 cm
26”
66 cm
24″
61 cm
26″
66 cm
CARRIAGE BUTTING SAW (.404″OR 3/4”)34”
86 cm
34”
86 cm
34″
86 cm
34″
86 cm
BOOM DRIVE SYSTEM
WINCH DRIVE (WITH VARIABLE DISPLACEMENT MOTOR WITH BRAKE)
BOOM SPEED14 ft/sec
4.3 m/sec
14 ft/sec
4.3 m/sec
14 ft/sec
4.3 m/sec
14 ft/sec
4.3 m/sec
HORIZONTAL PULLING FORCE10,000 lb
44.5 kN
7,500 lb
33.4 kN
10,000 lb
44.5 kN
7,500 lb
33.4 kN
HORIZONTAL PULLING FORCE WITH POWERPULL13,000 lb
57.8 kN
9,000 lb
40.0 kN
13,000 lb
57.8 kN
9,000 lb
40 kN
RECOMMENDED CARRIER SPECIFICATIONS: ALL BRANDS
SIZE22-29 M.T.
20-30 M.T
20-30 M.T.
20-34 M.T
22-30MT20-24MT
HYDRAULIC PRESSURE4,500 PSI4,500 PSI
REQUIRED FLOW2 X 50-60 GPM
2×170-225 l/min
21.4 kN2 x 50-60 gpm
2 x 170-225 l/min
21.4 kN
Denharco Delimbers Specifications

INTRODUCING THE ZERO 5 MEASURING SYSTEM.

Thanks to its exclusive Zero 5 measuring system, Denharco delimbers offer superior measuring quality. Now you can get more value —and less waste—out of each log. That’s a smarter way to work, by any measure.

Pierce Z5 Measuring System

INCLUDES
• Danfoss Controller full-scale measuring system
• Durable 6.5” glare-resistant, color display
• Head controller
• Cab controller
• Suregrip control handles
• Photocells located in tunnel
• Solid state electrical components
• Wireless technology between cab and head

FEATURES
• Unobtrusive monitor size doesn’t get in the way of the work ahead
• Instantaneous boot up time
• Real-time length & diameter read-out
• ‘Stop-on-mark’ technology eliminates searching
• Real-time tail swing display
• Measuring is initiated by either ‘FIND-END’, butt plate or making a butt cut
• Built-in, protected photocells for ‘FIND-END’ measuring
• Programmable for 3 different operators
• Easily programmable bucking lists and button functionalities
• Service menus and real-time diagnostic troubleshooting, calibrations and settings
• Simple adjustments optimize efficiency in various working conditions
• Simple and intuitive navigation throughout system
• Production Monitoring: Measure stem count and production values
• Dust and submersion protection
• –40ºF – 158ºF rating

LENGTH PRESETS
Use presets to gain speed, consistency and production by allowing the measuring system to do all the thinking. Take advantage of up to 10 different lengths for 10 different species. Simply select LENGTH and the PD5500M goes to mark. And, if necessary, change length or species on the fly.

SOFT CLAMP
Delimb arm pressure adjusts in both directions based on stem diameter allowing for a cleaner log. In larger stems, Denharco delimbers recognize the need for increased pressure and automatically supply delimb arms maximum pressure.

SCALE FACTOR
Calibrated scale factor allows for consistent and accurate results, regardless of species.

SAW TO SAW
Saw to saw measuring capability saves rehandling with the butt saw positioned behind hold arms.

Pierce Z5 Measuring System

CALL 800.760.3270 AND SPEAK TO A PRODUCT SPECIALIST
ABOUT DENHARCO DELIMBERS.

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