Bulk Cement Transport Trailer

Wilco WBT-620 (620-ft³) and WBT-660 (660-ft³) bulk transport trailers are designed for rapid unloading of bulk materials. Versions are available with and without engine and compressor packages.

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Our Wilco™ WBT-620 and WBT-660 models are built as transport trailers with two pressure vessels for transporting and unloading bulk cement and other powdered bulk materials.

Our WBT-620 and WBT-660 models are built as transport trailers with two pressure vessels for transporting and unloading bulk cement and other powdered bulk materials. Our trailers are designed to deploy to wellsites and other locations loaded with powdered bulk cement or other bulk solids, such as fracturing sand. The bulk cement is pneumatically displaced to storage silos, batch mixers, or combination cement blending/pumping units.

The paint system is shot-blast with epoxy primer and acrylic urethane top coat with choice of color and other finish details. Optional, organic zinc-rich primer is available for units operated in marine environments or other harsh operating areas.

Wilco WBT-620 and WBT-660 models are warrantied for 12 months from shipment date for repairs resulting from workmanship. Components for outside vendors including engines, compressors, axles, and suspension are covered by the original manufacturer’s warranty.


  • Manifold: Fill, vent, and discharge by manually controlled butterfly valves. Remote-control air-actuated valves are also available.
  • Dust collector (optional): Wilco standard ASME cyclone dust collector or Wilco ASME dust collector with Donaldson ToritR filtration system are available.
  • Surge vessel (optional): Wilco surge tanks are used to interface between the bulk storage tanks for cement and the cement mixing equipment. The surge tank’s constant pressure valve is used to reduce pressure surges and create a more even flow rate in pneumatically conveyed bulk material. Also, the constant pressure valve reduces dust at the cement mixer. Our surge vessel capacity is 20 ft³ (0.57 m3) and both ASME-certified and National Board of Boiler and Pressure Vessel Inspectors registered. The surge tank has a 36-psi (248-kPa) working pressure at -20 to 250 °F (-29 to 121 °C) temperature range.

Bulk Cement Transport Trailer Vessel Specifications

*Note: The tanks are designed per ASME pressure vessel code for temperatures above -20 °F (-29 °C). Special low-temperature (-50 °F [-45.6 °C]) pressure vessels can be optionally supplied.

WBT-620 WBT-660
Useable volume transport tanks 634 ft3 (17.95 m3) capacity 690 ft3 (19.54 m3)
Codes Designed to ASME Sec. VIII, Div. 1 and registered with the National Board of Boiler and Pressure Vessel Inspectors
Maximum allowable working pressure 36 psi (248 kPa) at 250 °F (121 °C)
Minimum design metal temperature -20 °F (-29 °C) at 36 psi (248 kPa)

Bulk Cement Transport Trailer Power Unit Specifications

Power unit Cummins QSF2.8T4F 74 hp (55.2 kW) Tier 4 final
Fuel tank 30 gallons (114 L)
Couplings 30-gallon (114-L) ASME air receiver with 3 in. (76.2 mm)
Compressor 30-hp (22.4 kW) compressor producing approximately 272 ft3/min (7.70 m3/min) at 30 psi (207 kPa) at 1,072 RPM engine speed
Engine Equipped with automatic shut-off system to “save” the unit if high-temperature, low oil pressure or high engine RPM are encountered

Bulk Cement Transport Trailer Frame Specifications

Design Steel I-beam frame mounted with dual axles and air ride suspension
Axles Two 25,000-lb (11 340-kg) axles with 71.5-in. (1.812-m) track
Suspension 25,000-lb (11 340-kg) Neway air ride suspension (mechanical spring suspension also available)
Steel wheel 22.5 × 8.25, 10-hole
Tires 11R22.5, 14-ply
Kingpin coupler Heavy-duty 2-in. (50.8-mm) SAE Holland Hitch (other sizes also available)
ABS system Trailer equipped with anti-lock brake system

Bulk Cement Transport Trailer Weight Specifications

WBT-620  WBT-660
Length 38 ft 4.5 in. (11.70 m)
Width 8 ft 6 in. (2.59 m)
Height 12 ft 8 in. (3.86 m) 13 ft 2 in. (4.01 m)
Total weight (empty) 23,200 lb (10 520 kg) 23,400 lb (10 610 kg)
Weight at rear axles (empty) 13,680 lb (6205 kg) 13,760 lb (6240 kg)
Unloaded kingpin weight 9,520 lb (4320 kg) 9,640 lb (4370 kg)
  • Wilco Bulk Transport Trailer Data Sheet
  • Wilco Capabilities and Services Brochure

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