Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof. (84)
Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof. (statistical code 84): imports in August 2026 were JPY 1,234,004,005,000 (+34.6% year on year). Main origins: People's Republic of China (35.2%), United States of America (23.0%), Taiwan (5.2%), Viet Nam (4.8%), Republic of Korea (4.3%). Figures for August 2026 are preliminary.
Exports in the same month were JPY 1,746,406,494,000, a trade surplus of JPY 512,402,489,000. (imports: preliminary; exports: revised)
Export statistics for this code
Monthly statistics
| Month | Status | Import value | Quantity | Unit price | Year-on-year |
|---|---|---|---|---|---|
| August 2026 | preliminary | JPY 1,234,004,005,000 | — | — | +34.6% |
| July 2026 | revised | JPY 1,303,409,008,000 | — | — | +22.3% |
| June 2026 | revised | JPY 1,280,267,554,000 | — | — | +19.7% |
| May 2026 | revised | JPY 1,151,674,825,000 | — | — | +19.8% |
| April 2026 | revised | JPY 1,207,512,442,000 | — | — | +22.5% |
| March 2026 | revised | JPY 1,171,169,408,000 | — | — | +14.1% |
| February 2026 | revised | JPY 965,955,230,000 | — | — | +1.8% |
| January 2026 | revised | JPY 1,114,926,687,000 | — | — | -9.6% |
| December 2025 | revised (second) | JPY 1,121,881,949,000 | — | — | +9.0% |
| November 2025 | revised (second) | JPY 1,052,693,057,000 | — | — | +12.5% |
| October 2025 | revised (second) | JPY 1,038,090,776,000 | — | — | +9.7% |
| September 2025 | revised (second) | JPY 1,001,370,076,000 | — | — | +13.2% |
| August 2025 | revised (second) | JPY 916,539,049,000 | — | — | +12.9% |
| July 2025 | revised (second) | JPY 1,065,586,910,000 | — | — | +2.5% |
| June 2025 | revised (second) | JPY 1,069,803,202,000 | — | — | +6.6% |
| May 2025 | revised (second) | JPY 961,533,683,000 | — | — | +1.0% |
| April 2025 | revised (second) | JPY 986,042,901,000 | — | — | +7.0% |
| March 2025 | revised (second) | JPY 1,026,568,388,000 | — | — | +16.1% |
| February 2025 | revised (second) | JPY 948,728,460,000 | — | — | +21.6% |
| January 2025 | revised (second) | JPY 1,232,819,048,000 | — | — | +45.9% |
| December 2024 | final | JPY 1,029,425,379,000 | — | — | +21.8% |
| November 2024 | final | JPY 936,103,802,000 | — | — | +5.9% |
| October 2024 | final | JPY 946,372,134,000 | — | — | +12.4% |
| September 2024 | final | JPY 884,647,847,000 | — | — | +10.2% |
Subcategories
- Nuclear reactors; fuel elements (cartridges), non-irradiated, for nuclear reactors; machinery and apparatus for isotopic separation.
- Steam or other vapour generating boilers (other than central heating hot water boilers capable also of producing low pressure steam); super-heated water boilers.
- Central heating boilers other than those of heading 84.02.
- Auxiliary plant for use with boilers of heading 84.02 or 84.03 (for example, economisers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapour power units.
- Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers.
- Steam turbines and other vapour turbines.
- Spark-ignition reciprocating or rotary internal combustion piston engines.
- Compression-ignition internal combustion piston engines (diesel or semi-diesel engines).
- Parts suitable for use solely or principally with the engines of heading 84.07 or 84.08.
- Hydraulic turbines, water wheels, and regulators therefor.
- Turbo-jets, turbo-propellers and other gas turbines.
- Other engines and motors.
- Pumps for liquids, whether or not fitted with a measuring device; liquid elevators.
- Air or vacuum pumps, air or other gas compressors and fans; ventilating or recycling hoods incorporating a fan, whether or not fitted with filters; gas-tight biological safety cabinets, whether or not fitted with filters.
- Air conditioning machines, comprising a motor-driven fan and elements for changing the temperature and humidity, including those machines in which the humidity cannot be separately regulated.
- Furnace burners for liquid fuel, for pulverised solid fuel or for gas; mechanical stokers, including their mechanical grates, mechanical ash dischargers and similar appliances.
- Industrial or laboratory furnaces and ovens, including incinerators, non-electric.
- Refrigerators, freezers and other refrigerating or freezing equipment, electric or other; heat pumps other than air conditioning machines of heading 84.15.
- Machinery, plant or laboratory equipment, whether or not electrically heated (excluding furnaces, ovens and other equipment of heading 85.14), for the treatment of materials by a process involving a change of temperature such as heating, cooking, roasting, distilling, rectifying, sterilising, pasteurising, steaming, drying, evaporating, vaporising, condensing or cooling, other than machinery or plant of a kind used for domestic purposes; instantaneous or storage water heaters, non-electric.
- Calendering or other rolling machines, other than for metals or glass, and cylinders therefor.
- Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases.
- Dish washing machines; machinery for cleaning or drying bottles or other containers; machinery for filling, closing, sealing or labelling bottles, cans, boxes, bags or other containers; machinery for capsuling bottles, jars, tubes and similar containers; other packing or wrapping machinery (including heat-shrink wrapping machinery); machinery for aerating beverages.
- Weighing machinery (excluding balances of a sensitivity of 5 cg or better), including weight operated counting or checking machines; weighing machine weights of all kinds.
- Mechanical appliances (whether or not hand-operated) for projecting, dispersing or spraying liquids or powders; fire extinguishers, whether or not charged; spray guns and similar appliances; steam or sand blasting machines and similar jet projecting machines.
- Pulley tackle and hoists other than skip hoists; winches and capstans; jacks.
- Ships' derricks; cranes, including cable cranes; mobile lifting frames, straddle carriers and works trucks fitted with a crane.
- Fork-lift trucks; other works trucks fitted with lifting or handling equipment.
- Other lifting, handling, loading or unloading machinery (for example, lifts, escalators, conveyors, teleferics).
- Self-propelled bulldozers, angledozers, graders, levellers, scrapers, mechanical shovels, excavators, shovel loaders, tamping machines and road rollers.
- Other moving, grading, levelling, scraping, excavating, tamping, compacting, extracting or boring machinery, for earth, minerals or ores; pile -drivers and pile-extractors; snow-ploughs and snow-blowers.
- Parts suitable for use solely or principally with the machinery of headings 84.25 to 84.30.
- Agricultural, horticultural or forestry machinery for soil preparation or cultivation; lawn or sports-ground rollers.
- Harvesting or threshing machinery, including straw or fodder balers; grass or hay mowers; machines for cleaning, sorting or grading eggs, fruit or other agricultural produce, other than machinery of heading 84.37.
- Milking machines and dairy machinery.
- Presses, crushers and similar machinery used in the manufacture of wine, cider, fruit juices or similar beverages.
- Other agricultural, horticultural, forestry, poultry-keeping or bee-keeping machinery, including germination plant fitted with mechanical or thermal equipment; poultry incubators and brooders.
- Machines for cleaning, sorting or grading seed, grain or dried leguminous vegetables; machinery used in the milling industry or for the working of cereals or dried leguminous vegetables, other than farm-type machinery.
- Machinery, not specified or included elsewhere in this Chapter, for the industrial preparation or manufacture of food or drink, other than machinery for the extraction or preparation of animal or fixed vegetable or microbial fats or oils.
- Machinery for making pulp of fibrous cellulosic material or for making or finishing paper or paperboard.
- Book-binding machinery, including book-sewing machines.
- Other machinery for making up paper pulp, paper or paperboard, including cutting machines of all kinds.
- Machinery, apparatus and equipment (other than the machines of headings 84.56 to 84.65) for preparing or making plates, cylinders or other printing components; plates, cylinders and other printing components; plates, cylinders and lithographic stones, prepared for printing purposes (for example, planed, grained or polished).
- Printing machinery used for printing by means of plates, cylinders and other printing components of heading 84.42; other printers, copying machines and facsimile machines, whether or not combined; parts and accessories thereof
- 8444
- Machines for preparing textile fibres; spinning, doubling or twisting machines and other machinery for producing textile yarns; textile reeling or winding (including weft-winding) machines and machines for preparing textile yarns for use on the machines of heading 84.46 or 84.47
- Weaving machines (looms)
- Knitting machines, stitch-bonding machines and machines for making gimped yarn, tulle, lace, embroidery, trimmings, braid or net and machines for tufting
- Auxiliary machinery for use with machines of heading 84.44, 84.45, 84.46 or 84.47 (for example, dobbies, Jacquards, automatic stop motions, shuttle changing mechanisms); parts and accessories suitable for use solely or principally with the machines of this heading or of heading 84.44, 84.45, 84.46 or 84.47 (for example, spindles and spindle flyers, card clothing, combs, extruding nipples, shuttles, healds and heald-frames, hosiery needles)
- 8449
- Household or laundry-type washing machines, including machines which both wash and dry
- Machinery (other than machines of heading 84.50) for washing, cleaning, wringing, drying, ironing, pressing (including fusing presses), bleaching, dyeing, dressing, finishing, coating or impregnating textile yarns, fabrics or made up textile articles and machines for applying the paste to the base fabric or other support used in the manufacture of floor coverings such as linoleum; machines for reeling, unreeling, folding, cutting or pinking textile fabrics
- Sewing machines, other than book-sewing machines of heading 84.40; furniture, bases and covers specially designed for sewing machines; sewing machine needles
- Machinery for preparing, tanning or working hides, skins or leather or for making or repairing footwear or other articles of hides, skins or leather, other than sewing machines
- Converters, ladles, ingot moulds and casting machines, of a kind used in metallurgy or in metal foundries
- Metal-rolling mills and rolls therefor
- Machine-tools for working any material by removal of material, by laser or other light or photon beam, ultrasonic, electro-discharge, electro-chemical, electron beam, ionic-beam or plasma arc processes; water-jet cutting machines
- Machining centres, unit construction machines (single station) and multi-station transfer machines, for working metal
- Lathes (including turning centres) for removing metal
- Machine-tools (including way-type unit head machines) for drilling, boring, milling, threading or tapping by removing metal, other than lathes (including turning centres) of heading 84.58
- Machine-tools for deburring, sharpening, grinding, honing, lapping, polishing or otherwise finishing metal or cermets by means of grinding stones, abrasives or polishing products, other than gear cutting, gear grinding or gear finishing machines of heading 84.61
- Machine-tools for planing, shaping, slotting, broaching, gear cutting, gear grinding or gear finishing, sawing, cutting-off and other machine-tools working by removing metal or cermets, not elsewhere specified or included
- Machine-tools (including presses) for working metal by forging, hammering or die forging (excluding rolling mills); machine-tools (including presses, slitting lines and cut-to-length lines) for working metal by bending, folding, straightening, flattening, shearing, punching, notching or nibbling (excluding draw-benches); presses for working metal or metal carbides, not specified above.
- Other machine-tools for working metal or cermets, without removing material
- Machine-tools for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass
- Machine-tools (including machines for nailing, stapling, glueing or otherwise assembling) for working wood, cork, bone, hard rubber, hard plastics or similar hard materials
- Parts and accessories suitable for use solely or principally with the machines of headings 84.56 to 84.65, including work or tool holders, self-opening dieheads, dividing heads and other special attachments for the machines; tool holders for any type of tool for working in the hand
- Tools for working in the hand, pneumatic, hydraulic or with self-contained electric or non-electric motor
- Machinery and apparatus for soldering, brazing or welding, whether or not capable of cutting, other than those of heading 85.15; gas-operated surface tempering machines and appliances
- Calculating machines and pocket-size data recording, reproducing and displaying machines with calculating functions; accounting machines, postage-franking machines, ticket-issuing machines and similar machines, incorporating a calculating device; cash registers
- Automatic data processing machines and units thereof; magnetic or optical readers, machines for transcribing data onto data media in coded form and machines for processing such data, not elsewhere specified or included
- Other office machines (for example, hectograph or stencil duplicating machines, addressing machines, automatic banknote dispensers, coin-sorting machines, coin-counting or wrapping machines, pencil-sharpening machines, perforating or stapling machines)
- Parts and accessories (other than covers, carrying cases and the like) suitable for use solely or principally with machines of headings 84.70 to 84.72
- Machinery for sorting, screening, separating, washing, crushing, grinding, mixing or kneading earth, stone, ores or other mineral substances, in solid (including powder or paste) form; machinery for agglomerating, shaping or moulding solid mineral fuels, ceramic paste, unhardened cements, plastering materials or other mineral products in powder or paste form; machines for forming foundry moulds of sand
- Machines for assembling electric or electronic lamps, tubes or valves or flashbulbs, in glass envelopes; machines for manufacturing or hot working glass or glassware
- Automatic goods-vending machines (for example, postage stamp, cigarette, food or beverage machines), including money-changing machines
- Machinery for working rubber or plastics or for the manufacture of products from these materials, not specified or included elsewhere in this Chapter
- Machinery for preparing or making up tobacco, not specified or included elsewhere in this Chapter
- Machines and mechanical appliances having individual functions, not specified or included elsewhere in this Chapter
- Moulding boxes for metal foundry; mould bases; moulding patterns; moulds for metal (other than ingot moulds), metal carbides, glass, mineral materials, rubber or plastics
- Taps, cocks, valves and similar appliances for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves
- Ball or roller bearings
- Transmission shafts (including cam shafts and crank shafts) and cranks; bearing housings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints)
- Gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assortments of gaskets and similar joints, dissimilar in composition, put up in pouches, envelopes or similar packings; mechanical seals
- Machines for additive manufacturing
- Machines and apparatus of a kind used solely or principally for the manufacture of semiconductor boules or wafers, semiconductor devices, electronic integrated circuits or flat panel displays; machines and apparatus specified in Note 11 (C) to this Chapter; parts and accessories
- Machinery parts, not containing electrical connectors, insulators, coils, contacts or other electrical features, not specified or included elsewhere in this Chapter
Long-term trend (from 2022)
Imports in 2022 were JPY 9,444,073,458,000; in 2025, JPY 12,421,657,499,000, about 1.3 times as much.
| Year | Imports | Exports | Balance |
|---|---|---|---|
| 2026 (Jan–Aug) | JPY 9,428,919,159,000 | JPY 14,048,316,893,000 | surplus JPY 4,619,397,734,000 |
| 2025 | JPY 12,421,657,499,000 | JPY 19,504,646,906,000 | surplus JPY 7,082,989,407,000 |
| 2024 | JPY 11,033,931,092,000 | JPY 19,010,788,783,000 | surplus JPY 7,976,857,691,000 |
| 2023 | JPY 9,741,601,689,000 | JPY 18,223,030,054,000 | surplus JPY 8,481,428,365,000 |
| 2022 | JPY 9,444,073,458,000 | JPY 18,640,570,948,000 | surplus JPY 9,196,497,490,000 |
Some goods moved between chapters with the HS revisions of 1996, 2002, 2007, 2012, 2017 and 2022.
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