G2 Gyratory Compactor

The G2 Gyratory Compactor


Pine Test Equipment Inc.'s G2 Superpave Gyratory Compactor is designed to compact asphalt specimens.  It also handles soils, emulsions, and concrete. The G2 is a customer favorite because it is user-friendly, reliable, durable, and well supported. 


The G2 compacts material at a constant consolidation pressure, a constant angle of gyration, and a fixed speed of gyration using an electromechanical system.  Users set the consolidation pressure, the angle of gyration parameters, and the mode of operation via the control panel.  The machine boasts an integrated computer control system, a control panel with display, two USB ports, an Ethernet jack, a completely enclosed compaction chamber, an integrated angle of gyration measurement system, and an integrated extruder for removing compacted specimens from a mold.

Standards Compliance:

Available Logbook Sheets for Download:

Technical Support and Service:

Product Comparison:

Click here for a comparison of the G2 and the GB1 Pine Superpave gyratory compactors.

Power Requirements: 


AFG2A: 115 VAC(±10%), 12Amp, 50/60 Hz, 1 ph

AFG2B:  208 VAC(±10%), 6 Amp, 50/60 Hz, 1 ph

AFG2C:  230 VAC(±10%), 6 Amp, 50/60 Hz, 1 ph

AFG2D:  100 VAC(±10%), 12 Amp, 50/60 Hz, 1 ph



875 mm wide x 900 mm deep x 1375 mm high

(~34.5 inch x ~35.5 inch x ~54 inch)



Approximately 400 kg (880 lb)

Note:  There are three eye-bolts mounted on the top of the machine with which to hoist it.

Applied Pressure:


200 kPa - 1,000 kPa

±60 kPa gyration 0-5; ±10 kPa gyrations >6

Note:  Users set the desired pressure via the control panel. 

Angle of Gyration:


0.00° - 1.50° (0.00 - 26.18 mrad)

Selectable to internal or external angle

Note:  Users set the desired angle of gyration via the control panel.

Speed of Gyration:

30 gyrations per minute

Note:  The speed of gyration is fixed.



Number of Gyrations:

0 - 999 gyrations

Mold Dimensions:


150.0mm +0.0/-0.1 mm ID x 250 mm tall

100.0mm +0.0/-0.1mm ID x 250 mm tall

101.6mm +0.0/-0.1mm (4”) ID x 250 mm tall

0.0 mm minimum specimen height

Note:  Molds meet the requirements of AASHTO T312 and ASTM D6925.

Modes of Operation:


Compact to number of gyrations, specified height, or locking point. 

Compact at a specified internal or external angle.

Note:  Users set the desired mode of operation.

Data Acquisition:


Gyration number

Specimen height (mm)

Angle of gyration (degrees)

Consolidation pressure (kPa)

Optional - Gyratory tilting moment (N-m)

Data Output Options:


2 USB data ports

Network compatible

Printer (optional)

 Part Number

 Part Description


 100 mm Paper Disks (1,000/pack)


 150-mm Paper Disks (500/pack)


 Ram Foot Lubricant


 Bearing Grease

Cleaning your equipment is critical to the performance of your gyratory.  Dirt and debris from the compaction process may affect results or damage the machine.  A cloth moistened with mineral spirits, lacquer thinner, or WD-40 will work fine.  It is especially important to keep the swivel-frame surface, mold top plate, mold bottom flange, and all mold and mold top clamp surfaces free of debris and lubricants.  The following maintenance schedules are designed to keep your machinery running at the highest performance level in which it was designed.


Maintenance Schedule:

Clean compaction chamber


Clean mold top

Daily.  (Do not use an oven to clean molds.  Exposing molds to such high temperatures may cause distortion of the mold and make it unusable.)

Inspect ram key

Annually or every 100 hours

Check mold base clamps

Every 25 hours or annually

Timing belt tension

Every 25 hours or annually

Inspect mold clamps

Every 25 hours or annually

Inspect ram foot for wear

Annually or every 100 hours


The battery used has a 10-year life.


Lubrication Schedule:

Ram foot 

Daily with anti-seize lubricant

Ball screw bearings

Every 100 hours or annually with grease.  Apply 2-3 pumps from the grease gun into the only grease fitting.

Ball screw

Every 500 hours or 5 years with grease.  Apply a single grease bead 6” long.

Actuator bearings

Every 100 hours or annually with grease.  Apply 2-3 pumps from the grease gun into the two grease fittings.

Mold clamp pivot

Every 500 hours or 5 years with anti-seize lubricant

Mold top clamps

Every 500 hours or 5 years with anti-seize lubricant


Inspection Schedule:

Ram key 

Inspect periodically for wear.  Light scoring is expected.  Rotate the key to use the unworn end.

Ram drive belt tension

Check every 500 hours.  The belt has proper tension when there is 0.25 to 0.50 inches of movement in the belt.

Mold clamps

 Inspect periodically for proper function.  An improperly functioning clamp may affect test results. 


Exercise Schedule:  Exercise your machine at least once a month to keep parts moving freely if you are not using it otherwise.

What should be considered in identifying a location for a machine?

  • A sturdy, approximately level floor is important. The machine weighs about 880 lb. (400 kg) and is top heavy.
  • The machine can be installed in a mobile lab. Holes are provided in the lower frame bracket to secure the machine to the floor.
  • The minimum floor space requirement is 34.5 inches wide by 35.5 inches deep. Be sure to allow additional space on the right side of the machine for access to the USB data port.
  • Allow space on either side of the machine for access to service it when necessary if there is insufficient room to move the machine around for servicing.
  • The minimum vertical space necessary is about 54 inches.
  • Provide access to an appropriate power supply for the machine purchased.

How movable is the machine?

  • The machine comes with a set of wheels and handles installed. Once the machine is off the skid, it can be moved a short distance by a single person. Care must be taken, however, because of the machine’s high center of gravity.
  • Three (3) lifting eyes are located on the top of the machine to provide a proper location to connect lifting apparatus.
  • The lower frame of the machine is configured to receive fork truck forks.

How often does a machine need calibrated?

  • AASHTO R18 specifies that a gyratory compactor should be verified every 12 months.
  • ASTM D6925-15 Section 6.2 specifies that a gyratory compactor should be calibrated annually or whenever there is reason to doubt the stability of the machine's operation.
  • AASHTO R18 Section specifies that equipment that may be affected by moving it to a new location or environment should be calibrated, standardized, or checked before being placed into service.
  • ASTM D6925-15 Section 6.3 specifies that calibration should be verified after it is moved to a new location.

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Pine Test Equipment

Pine Test Equipment, Inc.
101 Industrial Drive
Grove City, PA 16127

Phone: (724) 458-6393
Fax: (724) 458-6418
E-mail: Contact Us

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