ナカジマ技販 List of Products and Services

We would like to introduce our Los Angeles testing machine, the "NA-272." It features a steel cylinder with a diameter of 710mm and an inner length of 510mm, equipped with side plates on both sides. The reduction method is worm gear type, and the power transmission method is V-belt type. Please feel free to consult us when you need assistance. 【Main Specifications (Partial)】 ■ Cylinder: Steel cylinder with a diameter of 710mm and an inner length of 510mm, equipped with side plates on both sides ■ Cylinder rotation speed: 30–33 r.p.m. ■ Motor: 1.5Kw AC200V three-phase ■ Reduction method: Worm gear type ■ Power transmission method: V-belt type *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

The "NF-300" is an electric skid resistance tester that measures the skid resistance of asphalt mixtures and concrete paved surfaces. It consists of a thermometer for measuring surface temperature and a ruler marked with a length of 124mm to 127mm for correctly setting the slider's contact length. Additionally, the slider is made by adhering a rubber plate measuring 76.2×25.4×6.35mm to an aluminum plate. 【Components (partial)】 ■ Main unit (with storage box): 1 set ■ Slider: 5 pieces ■ Ruler: 1 piece ■ Surface thermometer: 1 piece ■ Water bottle: 1 piece *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

We would like to introduce our electric CBR loading device, the 'NS-630'. This is a manual and electric dual-use indoor CBR testing machine with a capacity of 50KN, driven by a screw jack powered by a continuously variable transmission motor. Please feel free to consult us when you need assistance. 【Specifications】 ■ Capacity: Maximum 50KN ■ Loading speed: 0.3 to 2mm/min ■ Transmission: AC200V 200W single phase *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

We would like to introduce our electric loading testing device, the 'NS-642'. It consists of a loading device, load cells, linear gauges, measuring instruments, and a computer. It can be used for applications such as Marshall tests, uniaxial compression tests, and CBR tests. 【Specifications (partial)】 ■ Maximum loading capacity: 100KN ■ Motor: AC200V three-phase 0.4Kw servo motor ■ Loading speed: 50 to 0.1 mm/min (freely set by potentiometer) (Return speed always descends at maximum speed) ■ Ram stroke length: approximately 75mm *For more details, please refer to the PDF document or feel free to contact us.

• Other analytical equipment

The NS-629 is a uniaxial compression testing machine that uses a speed control motor. It features a power ON/OFF switch (with lamp) and an up/stop/down toggle switch (with up/down lamps), and for safety, a limit switch is installed to stop the motor at the lower limit. Additionally, due to the clutch mechanism, pulling the handle towards you allows for smooth manual up/down operation. 【Specifications (partial)】 <Loading Mechanism> ■ Applicable specimen: φ35×70, φ50×100 (can be changed depending on specifications) ■ Loading capacity: 2KN (200kg), 5KN (500kg), 10KN (1ton) in three types ■ Loading speed: 0.04 to 3mm/min ■ Stroke: 75mm *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

The NS-215 is a dryer designed to maintain a uniform indoor temperature by forcing hot air to circulate. The hot air is heated by a heater and circulated indoors by a motor, automatically adjusted to the specified temperature by an electronic temperature controller. The inner and outer walls are made of double steel plates with insulation, and the door is a double-opening type. Please feel free to consult us when you need assistance. 【Specifications】 ■ Maximum temperature: 200℃ ■ Temperature control: Electronic digital temperature controller ■ Overheating prevention: Robertshaw temperature controller ■ Power supply: AC200V three-phase ■ Shelves: 2 (expandable) *For more details, please refer to the PDF materials or feel free to contact us.

• Air conditioning equipment

The NA-506 is an electric Marshall loading device applicable for testing the stability and flow value of asphalt mixtures. It consists of two linear gauges, a loading device, a load cell, a test head, and one crushing jig each. The power supply required is a single-phase AC100V with two 15A outlets. 【Specifications】 ■ Capacity: 50KN ■ Motor: AC100V 0.4Kw single-phase ■ Loading speed: Approximately 50mm/min ■ Ram stroke length: Approximately 75mm ■ Load measurement: Load cell (50kN) ■ Flow value measurement: Linear gauge 30mm *For more details, please refer to the PDF document or feel free to contact us.

• Other analytical equipment

The NA-545 is a water immersion wheel tracking test machine suitable for test specimens measuring 300×500×50 mm. The test wheel has a diameter of 200 mm, a width of 50 mm, and a rubber thickness of 15 mm, with a wheel load of 686 N ± 10 N using a direct load method with weights. The temperature is controlled by a digital indicating controller and recorded with a 6-point recorder. 【Main Specifications (Partial)】 ■ Test specimen dimensions: 300×300×50 mmH, 100 mmH, 300×500×50 mm, 100 mmH ■ Wheel load method: Direct load method with weights ・ Test wheel: Diameter 200 mm, width 50 mm, rubber thickness 15 mm ・ Wheel load: 686 N ± 10 N *For more details, please refer to the PDF document or feel free to contact us.

• Other analytical equipment

The "No.NA-546" is a wheel tracking testing machine that uses a weight direct load method for wheel load. The driving mechanism employs a crank-driven horizontal reciprocating method, while the traverse mechanism uses an electric chain-driven screw method. The running position of the test wheel is selected via push buttons on a touch panel, allowing for three position choices: the center of the specimen or 50mm before or after it. 【Main Specifications (Partial)】 ■ Specimen dimensions: 300×300×50mmH; 300×300×100mmH ■ Wheel load method: Weight direct load method ・ Test wheel: Diameter 200mm × Width 50mm × Rubber thickness 15mm ・ Wheel load: 686N ± 10N *For more details, please refer to the PDF document or feel free to contact us.

• Other analytical equipment

The NA-523 is a labeling testing machine used to evaluate the wear resistance of surface mixtures, such as heated asphalt mixtures. The structure of this testing machine features a specimen mounted on it that moves back and forth horizontally (66 cycles per minute), while during those 66 cycles, a wheel equipped with 10 sets of 12 chains (φ250×width 100mm) rotates (at a speed of 200 r.p.m.) and descends. It has a mechanism that wears the surface using chains. 【Specifications (partial)】 ■ Specimen dimensions: Length 400 × Width 150 × Thickness 50 mm ■ Tire chain: φ250 × Width 100 mm, made of steel ■ Chain rotation speed: 200 r.p.m. ■ Travel device ・Back and forth motion: 66 cycles/min ・Travel distance: 450 mm *For more details, please refer to the PDF document or feel free to contact us.

• Other analytical equipment

We would like to introduce our roller compactor 'NA-544'. The compaction wheel of the load-bearing section has a radius of 460mm, and the loading method is pneumatic load. The drive mechanism employs an electric drive crank reciprocating system. The dimensions of the machine at maximum elevation are 1250mm in width, 700mm in depth, and 1400mm in height. Please feel free to consult us when you need assistance. 【Main Specifications (Partial)】 <Load-bearing Section> ■Compaction Wheel: Radius 460mm ■Wheel Load: 11.77KN (approximately 1200Kgf) ■Loading Method: Pneumatic Load ■Compaction Height: 50・100mm *For more details, please refer to the PDF materials or feel free to contact us.

• others

The "NA-539" is a mixer that produces goose asphalt by maintaining a constant temperature with a heating and insulation device and stirring blades. Temperature control is automatically managed by a thyristor power controller up to 160°C, and manual control is available from 160°C to 240°C. Please feel free to consult us when you need assistance. 【Specifications (partial)】 ■ Capacity ・70Kgf ・Heating heater AC200V single phase 8KW ・Heating tank oil bath method ■ Rotation speed: 1.5 to 15 r.p.m. ■ Maximum temperature: 240°C *For more details, please refer to the PDF document or feel free to contact us.

• others

We would like to introduce our torsion testing machine, the 'NA-527'. The test wheel features a solid tire with a diameter of φ200mm and a width of 50mm. The temperature controller allows for temperature control via a digital display regulator. Safety devices include a stop function through a digital indicating regulator subset and a stop function via a temperature fuse. 【Specifications (partial)】 <Main Unit> ■Test specimen dimensions: 300x300x50H ■Rotational speed: 10.5 revolutions/min ■Test wheel: Solid tire with a diameter of φ200mm and a width of 50mm ■Rotating table: Worm reduction gear, AC200V 3-phase motor, 0.4kW ■Detection unit: Proximity switch *For more details, please refer to the PDF document or feel free to contact us.

• Other measuring instruments

The "NA-600" is a sample cutting machine with a stainless steel drainage receiving tank. This device is a cutting machine that prioritizes safety; when the cover is open (during sample loading and unloading), the blade does not activate. The cutting speed can be adjusted according to the hardness of the sample. 【Features】 ■ A cutting machine that emphasizes safety (the blade stops when the cover is opened) ■ Equipped with a soundproof cover to minimize noise leakage ■ No splashing of cooling water ■ Cutting speed can be adjusted according to the hardness of the sample ■ Equipped with casters for easy mobility *For more details, please refer to the PDF materials or feel free to contact us.

• others

We would like to introduce our asphalt automatic tamper device, the 'NC-507'. The dimensions of the unit are 420mm in width, 450mm in depth, and 1750mm in height, with a weight of approximately 120Kgf. The tampering platform consists of a wooden square column base measuring 20cm on each side and 45cm in height, to which a square steel plate measuring 30cm on each side and 25mm in thickness is attached. 【Main Specifications (Partial)】 < Tamper Drop Mechanism > ■ Type: Electric gear-driven roller chain system ■ Tamper: Hammer weight 4.5Kgf (10 pounds) ■ Drop height: 457.2mm (18 inches) ■ Drop frequency: Approximately 70 times/minute ■ Hammer lifting mechanism: Roller chain type *For more details, please refer to the PDF document or feel free to contact us.

• Road construction
• Foundation construction machinery

At Nakajima Gihan, we handle the "Constant Temperature Water Circulation Device (for 6m² and 12m²)". This product can maintain the water temperature of various tanks at a constant level, regardless of the outside temperature. It can be used for concrete curing tanks, soil testing tanks, asphalt testing, and more. Additionally, it is designed for easy cleaning and overhauling, and features a safety device, allowing for operation without hysteresis and enabling long hours of continuous operation. 【Features】 ■ Usable for concrete curing tanks, soil testing tanks, asphalt testing, etc. ■ Easy to clean and overhaul ■ Designed with safety devices ■ No hysteresis ■ Capable of long hours of continuous operation *For more details, please refer to the PDF document or feel free to contact us.

• others

The "No.NC-576" is a wear testing machine applicable for slip resistance tests on concrete slabs and similar materials. The structure of the device consists of four vertical supports, with a movable base that can move up and down on top of them. An electric motor is mounted on the movable base. The elevation of the movable base can be adjusted by operating a manual handle that engages sprockets attached to the four supports via a chain. The rotation of the electric motor is reduced through a gear mechanism, which rotates a central plate. Two rotating shafts are mounted on the central plate and rotate via the gear mechanism. 【Features】 ■ Applicable for slip resistance tests on concrete slabs and similar materials ■ Each rotating shaft can be equipped with specified weights *For more details, please refer to the PDF materials or feel free to contact us.

• others

The "No.NC-587" is a concrete grinding machine that can be used for the preparation of test specimens for concrete compression tests, adhering to the JISA1132 standard. It allows for capping using the JISA1132 standard polishing method, and can simultaneously polish three test specimens measuring 10X20 cm. With an electric feeding device, the test specimens fixed on a V-shaped holder can move horizontally during polishing. Additionally, it is equipped with an automatic stop function controlled by a timer. 【Main Specifications (Partial)】 ■ Possible specimen dimensions: φ100X200Lmm ■ Grinding disc: Diamond grinding disc ■ Number of specimens for grinding: 3 simultaneously ■ Grinding method: Wet type ■ Motor: 200V three-phase 0.75KW 1 unit, 0.1Kw 2 units, etc. *For more details, please refer to the PDF document or feel free to contact us.

• others

The "No.NS-631" is an electric displacement-controlled compression testing machine. It is suitable for compression tests of various specimens such as concrete, asphalt, soil, and soil-cement. The driving mechanism for the upper frame lifting system is electric. Additionally, we offer attachments such as displacement gauge holders, spherical seats, and test heads as options. Please contact us for more details. 【Main Specifications (Partial)】 ＜Loading Mechanism＞ ■ Control Method: Electric displacement control type ■ Load Rating: Maximum 10,000 kgf ■ Loading Speed: 0.05 to 50 mm/min ■ Loading Stroke: Maximum 140 mm ■ Automatic Stop: Automatic stop at upper and lower limits of the loading plate and external signals, etc. *For more details, please refer to the PDF document or feel free to contact us.

• others

The "No.NS-521/522" is a device used for the preparation of test specimens for soil compaction tests and CBR tests. Compaction and CBR compaction can be easily performed by exchanging the friction cam plate and the rammer rod. Additionally, uniform compaction can be achieved through the rotation of the table, allowing for six surrounding impacts and one center impact in repetition. We also offer a grip-type model, "No.NS-524." 【Features】 ■ Used for the preparation of test specimens for soil compaction tests and CBR tests ■ Friction cam made of urethane rubber rollers ■ No slipping or similar issues ■ Excellent wear resistance ■ Long lifespan *For more details, please refer to the PDF materials or feel free to contact us.

• others

Introducing the asphalt mixer "No.NA-541." The heating tank has a capacity of approximately 20 liters (effective mixing weight of about 30 kgf). It stirs using a two-axis planetary gear drive with both movable and fixed blades. Additionally, the timer is digital. For more details about other products, please contact us. 【Main Specifications (Partial)】 <Heating Tank> ■ Capacity: Effective approximately 20 liters (effective mixing weight about 30 kgf) ■ Heating Capacity: Heater capacity 4 kW AC 200V three-phase ■ Lifting: Electric drive lifting time approximately 25 seconds ■ Tipping: Electric drive tipping time approximately 5 seconds ■ Internal Dimensions: Inner diameter 386 mm, inner height 265 mm, etc. *For more details, please refer to the PDF materials or feel free to contact us.

• others

We would like to introduce the torsion testing machine "No.NA-527." The specimen dimensions are 300x300x50H. It is equipped with a safety device that allows for stopping via a digital indicator adjustment set and temperature fuse. Additionally, we also handle the immersion-type torsion testing device "No.NA-528." Please contact us for more details. 【Specifications (partial)】 <Main Unit> ■Specimen dimensions: 300x300x50H ■Rotational speed: 10.5 revolutions/min ■Test wheel: Solid tire with a diameter of φ200mm and width of 50mm ■Rotating table: Worm gear reducer Motor AC200V 3-phase 0.4kW ■Detection unit: Proximity switch, etc. *For more details, please refer to the PDF document or feel free to contact us.

• others

The "ACE-II NA-900" is an asphalt extraction device that incorporates a system for circulating cooling water internally and a system for cooling the collected water using a refrigeration unit, built into a conventional centrifugal extraction apparatus. This device extracts and recovers asphalt components by injecting solvent into a sample container containing asphalt mixture while rotating at high speed, allowing the solvent to dissolve the asphalt components. The recovered extraction solvent is distilled and regenerated for reuse in asphalt extraction. This method significantly reduces extraction time compared to a Soxhlet apparatus. Additionally, the amount of cooling water used is drastically reduced, leading to substantial savings on water bills. 【Features】 ■ Fully automatic extraction testing process ■ Equipped with a refrigeration unit and a pump-mounted water tank ■ Significant cost reduction in tap water usage ■ Improved solvent recovery rate through temperature settings of cooling water *For more details, please refer to the PDF document or feel free to contact us.

• others
• Paving Machine

This catalog is a product catalog (digest version) of Nakajima Gihan Co., Ltd., which is engaged in the design, manufacturing, sales, and repair of various testing machines for civil engineering. It includes items such as a torsion testing machine, an automatic soil compaction device, and a manual/electric combined indoor CBR testing machine with a capacity of 50KN driven by an electric motor with a continuously variable transmission. [Contents] ■ Asphalt Section ■ Soil Section ■ Concrete Aggregate Section *This catalog is a digest version. Please contact us if you need the full version. *For more details, please download the PDF or feel free to contact us.

• Electrical Equipment Testing