336 Excavator

  • Specs Summary
  • Operating Weight
    20878 lb (9470 kg)
  • Standard Compaction Width
    67 in (1700 mm)
  • Gross Power
    100 hp (75 kW)
  • Net Power - EEC 80/1260

CB8 Tandem Vibratory Roller

The Cat® CB8 is an 8 ton roller with 1700 mm (67") tandem vibratory drums. Its lighter weight offers additional transport options with its wider drum increases compaction coverage.

Exceptional Visibility and Control

Fingertip Control

The multi-function propel lever with integrated controls for water spray on/off, drum offset, vibratory control, and optional edge cutter height adjustment enables the operator to work with confidence.

Comfortable Operating Station

The machine controls and LCD display are integrated with the pivoting adjustable seat, and move with the operator. Seating options include vinyl for open-platform configurations and cloth for cab, both can be equipped with a heated option. An optional deluxe highback air-ride seat is also available. Other comfort features include a vibration-absorbing floor mat, 12-volt power receptacle that supports communication devices, wide-width seat belt, cup holders and a lockable storage compartment.

LCD Display

The back-lit LCD display includes machine data and diagnostics. It is integrated with the seat, so it remains in the same position even as the seat pivots. A built-in lockable anti-vandalism cover offers protection. The display provides multiple language options, split-screen capability, and indicators for ground speed, vibrations per minute, and fuel level.

Convenient Console

The console is integrated with the seat, providing fingertip access. Soft keys with tactile feel provide instant feedback to the operator for intuitive operation. The armrests are adjustable and can be tailored to the operator for additional comfort.

Vibratory System Choices

2-Amplitude/2-Frequency Vibratory System

The 2-amplitude, 2-frequency vibratory system can be tailored to thin and thick lifts. A single switch automatically matches amplitude and frequency for simple operation.

5-Amplitude Vibratory System

The 5-amplitude system is a heavy hitter for thick lifts and tough mix designs. It utilizes a single frequency and five amplitudes that can easily be fine-tuned to match application requirements.

Performance Features

The vibratory systems offer multiple options that help fine-tune performance on thick challenging lifts. The automatic speed control feature makes it easier to maintain consistency and impact spacing requirements. Also, an auto vibe function helps prevent over-compaction and contributes to uniformity.

Cat® Compaction Control

Temperature Sensors

Dual infra-red sensors mounted on the front and rear of the machine deliver real-time readings that keep the operator informed of when to begin rolling and when to stop. This system helps operators avoid tender-zones that often occur in the 104º-110º C (219º-230º F) temperature range.

Pass-Count Mapping

Pass-count mapping helps operators achieve target density and increase roller efficiency. The system records and monitors pass patterns in order to display coverage. The system also helps operators optimize drum overlap, simplify nighttime operation, eliminate second guessing and prevent incomplete passes such as stopping short.

Temperature Mapping

Temperature mapping provides a visual readout of mat temperature in order to keep the machine in the proper temperature range. The system records and monitors temperature for future analysis of the proper temperature range.

Smooth Operating Powertrain

Cat® C3.4B Engine

The C3.4B engine provides 75 kW (100 hp) of power and meets U.S. EPA Tier 4 Interim and EU Stage IIIB emission standards. It features an electronic control module (ECM), providing optimal performance through precisely synchronized timing and fuel delivery. The ECM enables advanced troubleshooting and diagnostic capabilities using Electronic Technician (Cat ET). Cat dealers are the single-source providers of all machine and engine warranty service (a Cat exclusive).

High Capacity Cooling System

The large capacity cooling system keeps the operating temperatures low, even in extreme conditions. The high capacity fan directs warm air away from the operator for a more comfortable operating environment.


  • Operating Weight 20878 lb (9470 kg)
  • Operating Weight at Rear Drum with ROPS/FOPS 18783 lb (8520 kg)
  • Operating Weight at Front Drum with ROPS/FOPS 20343 lb (9250 kg)
  • Operating Weight with cab 19224 lb (8720 kg)

Operating Specifications

  • Standard Compaction Width 67 in (1700 mm)
  • Maximum Compaction Width 73 in (1854 mm)
  • Static Linear Load 143 lb/in (25.6 kg/cm)
  • Travel Speed - Maximum 7.5 mph (12 km/h)


  • Gross Power 100 hp (75 kW)
  • Engine Model Cat® C3.4B with ACERT Technology

Service Refill Capacities

  • Fuel Tank Capacity 55 gal (208 L)
  • Water (Spray) Tank Capacity 196 gal (742 L)

Vibratory System

  • Drum Width 67 in (1700 mm)
  • Vibration Selection Independent per drum, front only, rear only, both
  • Centrifugal Force per Drum - Maximum 17603 lb (78.3 kN)
  • Centrifugal Force per Drum - Minimum 6789 lb (30.2 kN)
  • Nominal Amplitude - High 0.022 in (0.56 mm)
  • Nominal Amplitude - Low 0.01 in (0.22 mm)


  • Overall Length 177 in (4565 mm)
  • Wheelbase 130 in (3300 mm)
  • Height with ROPS/FOPS 117 in (2980 mm)
  • Overall Width 73 in (1862 mm)
  • Drum Diameter 43 in (1108 mm)

Standard Equipment

Optional Equipment

2-Amplitude, 2 Frequency Vibratory System

5-Amplitude Vibratory System

Air Suspension Seat w/heat

Air Conditioning

Bio-Degradeable Oil

Cat® Compaction Control

CMV Sensor

Edge Cutter

Freeze Protection Kit

Halogen Ligths with Drum Edge Lights

High Ambient Cooling System

High Intensity Discharge Lights

Machine to Machine Communication

LED Ligthing


Offset Hitch

Product Link

Recording Module (cab only)


Roading Lights

Temperature Gauge (single sensor)

Water Distribution Mats

Warning Beacon