Pierce Pacific Manufacturing, Inc. Pierce Denharco, Inc. POWER ATTACHMENTS
FORESTRY Designed for the rigors of heavy forestry applications & road building, demolition and material handling, as well as extreme climate conditions. Commonly used for: loading, unloading, feeding, clean-up, precision handling, demolition, brush piling. Controlled articulation & positioning from bucket cylinder and linkage. Adapt to quick coupler for further versatility. Attach to excavators, road builders & log loaders. CONFIGURATIONS AVAILABLE: CLAMSHELL BUCKET BRUSH RAKE/GRAPPLE CONTRACTOR S GRAPPLE: 3 X 3
Valving Valve in head configuration is best suited for standard excavators. Valve on machine is best suited for machine already equipped with additional hydraulics. Bearing Rugged main bearing & large capacity through-bolted external gear slewing ring with bolt-on guard (see hydraulic system illustration). Heavy duty cylinders Centralized counterbalance valves secure your payload, in the event of a pressure loss. High pressure seals. Thick wall construction. Options Dual rotate motors for additional rotational torque. Valve in head or valve on machine configurations. Open/close/rotate: proportional control. Rotational float. Modular saw option for clamshell bucket & brush rake grapple configurations. Recommended additional counterweight (approximately 1,500# - 2,000#). Hydraulic kits & required boom plumbing. Fixed heel option for improved log handling ability. Electrical system Momentary rotational float allows payload s momentum to pivot work tool (optional). Maintenance Easy access to all service and maintenance locations. Bolt-on cover plates protect main bearing and other serviceable locations during operation. Excavator requirements 40-60 GPM supply & return circuit.
STRUCTURE T-1 steel used for superior strength & AR-400 used for abrasive resistant surfaces. Common upper housing integrates lugging interface to any excavator. Enclosed upper housing protects hydraulic components from debris & impacts. Bolt-on replaceable, serrated side edges. Replaceable bucket teeth. Grapple legs: box construction. Tines Interchangeability: switch from clamshell bucket to brush grapple without the investment of another dedicated work tool. Simply utilize the common structure and interchange the legs/tines only. Replaceable, weld-on or pin-on oem tips (Esco teeth, or other). PINS & BUSHINGS Large diameter, HRHT 4140 alloy pins. Aluminum bronze bushings (arms and cylinders). Standard Hydraulic Core Rotational Bearing Hydraulic Manifolds High Pressure Swivel Cylinder Manifold With Built-In Counterbalance Valve Rotate Motor HYDRAULIC SYSTEM Direct coupled rotate drive with double supported pinion gear and high output motor(s). 360 degree high pressure swivel designed for long life, and equipped with roller bearing support, internal drain and HP seals. Modular bolt-on hydraulic options (secondary rotate motor, saw function, valve in head, etc.). Dual rotate motors for additional rotational torque (optional). Open/close/rotate: on/off or proportional control (optional). Versatile plumbing: all plumbing to stick tip exits on left side of upper housing (best for road building), or plumbing exits from both sides (best for demolition),depends upon final application. System designed for high pressure hydraulic systems. In standard directional control, spool limiters allow for rotational & open/close speed adjustments. Hydraulic Core Options Standard Core Saw Manifold Valve In Head: Directional or Proportional Control Secondary Rotation Motor Not shown: Rotational Float
POWER ATTACHMENT SIZES (CLAMSHELL BUCKET SHOWN).50 YD3.75-1.00 YD3 1.25-1.5 YD3 RECOMMENDED MACHINE SIZE 15 MT - 24 MT 22 MT - 37 MT 30 MT - 46 MT WEIGHT (SINGLE DRIVE, NO LUGGING) 3,600# 4,500# 5,500# A HEIGHT (OPEN) 59 63 66 B HEIGHT (CLOSED) 74 83 93 C OVERALL WIDTH (OPEN) 87 103 120 D OVERALL WIDTH (CLOSED) 51 54 62 E MAXIMUM OPENING 81 96 114 F DEPTH 35 37 43 NOTE: MEASUREMENTS ABOVE REFLECT CLAMSHELL BUCKET CONFIGURATION. SPECIFICATIONS AND MEASUREMENTS WILL VARY DEPENDING ON CONFIGURATION. ROTATE GEAR/BEARING DIAMETER 25 27 30 MAIN BEARING RATING 120,000 LBS @ 0 FT. LBS 40,000 LBS @ 52,000 FT. LBS. 120,000 LBS @ 0 FT. LBS 40,000 LBS @ 52,000 FT. LBS. 160,000 LBS @ 0 FT. LBS 50,000 LBS @ 70,000 FT. LBS. ROTATION 360 DEGREES 360 DEGREES 360 DEGREES DRIVE OPTIONS SINGLE DRIVE, DUEL DRIVE SINGLE DRIVE, DUEL DRIVE SINGLE DRIVE, DUEL DRIVE CYLINDER SIZE 4 4 4 B A E C D F
Pierce Pacific Manufacturing, Inc. Pierce Denharco, Inc. 4424 NE 158th Portland, Oregon 97230 USA Post Office Box 30509 Portland, Oregon 97294 USA Telephone: 503.808.9110 Toll Free: 800.760.3270 Facsimile: 503.808.9111 Distribution Warehouses Edmonton, Alberta Canada Jackson, Mississippi USA www.piercepacific.com www.denharco.com