Koike Aronson ShopJet

Specs verified 2026-10-05 · koike.com Updated 2026-10-05

Image: koike.com, Koike Aronson

Key Specifications

Tool Capacity

Rapid Traverse

750 ipm (19.1 m/min)

Repeatability

0.0015 in (0.04 mm)

effective cutting area

SJ-44: 4 ft x 4 ft (1.2 m x 1.2 m); SJ-48: 4 ft x 8 ft (1.2 m x 2.4 m); SJ-510: 5 ft x 10 ft (1.5 m x 3.0 m)

effective cutting width

SJ-44: 48 in (1,219 mm); SJ-48: 96 in (2,438 mm); SJ-510: 120 in (3,048 mm)

effective cutting length

SJ-44: 48 in (1,219 mm); SJ-48: 48 in (1,219 mm); SJ-510: 60 in (1,524 mm)

How much does the Koike Aronson ShopJet cost?

Price estimate

Uncertain

We do not have a price for the Koike Aronson ShopJet that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.

Overview

The Koike Aronson ShopJet is a compact abrasive waterjet built on the same unitized frame idea as the maker's ShopPro plasma tables. Three sizes are listed, the SJ-44, SJ-48 and SJ-510, with effective cutting areas from 4 ft x 4 ft (1.2 m x 1.2 m) to 5 ft x 10 ft (1.5 m x 3.0 m), and two pumps rated 55,000 psi (3,792 bar).

The pump is the main choice. Koike's worksheet offers a Triline direct drive pump at 30 hp (22.4 kW) or a Neoline intensifier at 40 hp (29.8 kW), both at 55,000 psi (3,792 bar), on 230/3/60 or 480/3/60. A chiller is listed for the Neoline pump only. The machine itself runs on 115/1/60 at 15 amp, so the pump sets the electrical service.

Because the tank is full of water in use, the installed weight is far above the shipping weight. The SJ-510 weighs 4,900 lb (2,223 kg) empty and 13,800 lb (6,260 kg) full, with 1,068 gallons (4,042 L) of water. Table capacity is 82 pounds per square foot (400 kg/m²), which limits how heavy a plate can go on the slats.

Motion comes from three 954 oz-in NEMA-34 stepper motors through precision helical 10:1 gearboxes onto a direct drive helical rack. Rapid traverse is 750 ipm (19.1 m/min) and machine repeatability is 0.0015 in (0.04 mm). Tool capacity is 1, so there is a single cutting head. The control is a FlashCut CNC 21 in panel PC with the FlashCut Pro CAD/CAM software, and Koike states the machine can be shipped on a standard 8 ft truck.

Full Specifications

Parameter	Value
Effective Cutting Area	SJ-44: 4 ft x 4 ft (1.2 m x 1.2 m); SJ-48: 4 ft x 8 ft (1.2 m x 2.4 m); SJ-510: 5 ft x 10 ft (1.5 m x 3.0 m)
Effective Cutting Width	SJ-44: 48 in (1,219 mm); SJ-48: 96 in (2,438 mm); SJ-510: 120 in (3,048 mm)
Effective Cutting Length	SJ-44: 48 in (1,219 mm); SJ-48: 48 in (1,219 mm); SJ-510: 60 in (1,524 mm)
Rapid Traverse Rate	750 ipm (19.1 m/min)
Machine Width	SJ-44: 79 in (2,007 mm); SJ-48: 127 in (3,226 mm); SJ-510: 151 in (3,835 mm)
Machine Length	SJ-44: 71 in (1,803 mm); SJ-48: 71 in (1,803 mm); SJ-510: 83 in (2,108 mm) (CNC not included)
Machine Weight Empty	SJ-44: 2,300 lb (1,043 kg); SJ-48: 3,400 lb (1,542 kg); SJ-510: 4,900 lb (2,223 kg)
Machine Weight Full	SJ-44: 5,094 lb (2,311 kg); SJ-48: 8,800 lb (3,992 kg); SJ-510: 13,800 lb (6,260 kg)
Tool Capacity	1
Water Capacity	SJ-44: 335 gallons (1,268 L); SJ-48: 649 gallons (2,456 L); SJ-510: 1,068 gallons (4,042 L)
Table Capacity	82 pounds per square foot (400 kg/m²)
Pump Options	Triline direct drive, 55,000 psi (3,792 bar), 30 hp (22.4 kW); Neoline intensifier, 55,000 psi (3,792 bar), 40 hp (29.8 kW)
Pump Voltage	230/3/60 or 480/3/60
Power Requirement	115/1/60 @ 15 amp (machine)
CNC Control	FlashCut CNC 21 in panel PC
Drive System	Stepper, rack and pinion drive system
Stepper Motors	(3) 954 oz-in NEMA-34
Gear Reduction	(3) precision helical 10:1 gearboxes
Linear Guidance	25 mm profile linear rail, 30 mm gantry
Gear Engagement	Direct drive helical rack and pinion
Gantry Carriage	Solid steel construction
Repeatability	0.0015 in (0.04 mm)
Frame Construction	7 gauge mild steel

Specifications sourced from koike.com — verified 2026-10-05

Strengths & Limitations

Strengths

No heat-affected zone and no discoloring, on a machine with 0.0015 in (0.04 mm) repeatability
Two pump choices at 55,000 psi (3,792 bar): a 30 hp (22.4 kW) direct drive or a 40 hp (29.8 kW) intensifier
Unitized design; Koike states it can be shipped on a standard 8 ft truck
FlashCut Pro CAD/CAM software and a 21 in panel PC are part of the machine
Built to ISO 230-2, with direct drive helical rack and pinion

Limitations

A single cutting head: tool capacity is 1
Table capacity of 82 pounds per square foot (400 kg/m²) limits heavy plate
Filled weight reaches 13,800 lb (6,260 kg) on the SJ-510, so the floor has to be checked
Stepper drive with 750 ipm (19.1 m/min) rapid traverse; no servo version is listed
The largest size is 5 ft x 10 ft (1.5 m x 3.0 m)

Best For

Fabrication shops adding waterjet for parts that cannot take heat Mixed materials in sheet sizes up to 5 x 10 ft Shops with limited floor space and access Prototype and short-run cutting from DXF or DWG files

Frequently Asked Questions

01 What sizes does the ShopJet come in?

Three: the SJ-44 with 4 ft x 4 ft (1.2 m x 1.2 m) of effective cutting area, the SJ-48 with 4 ft x 8 ft (1.2 m x 2.4 m) and the SJ-510 with 5 ft x 10 ft (1.5 m x 3.0 m). Machine width is 79 in (2,007 mm), 127 in (3,226 mm) and 151 in (3,835 mm), and machine length without the CNC is 71 in (1,803 mm) or 83 in (2,108 mm).

02 Which pumps are offered with the ShopJet?

Koike's worksheet lists two. The Triline direct drive pump is 55,000 psi (3,792 bar) at 30 hp (22.4 kW). The Neoline intensifier is 55,000 psi (3,792 bar) at 40 hp (29.8 kW), and a chiller is listed for that pump only. Pump voltage is 230/3/60 or 480/3/60.

03 How much does the ShopJet weigh?

It depends on whether the tank is filled. The SJ-44 is 2,300 lb (1,043 kg) empty and 5,094 lb (2,311 kg) full, the SJ-48 3,400 lb (1,542 kg) and 8,800 lb (3,992 kg), and the SJ-510 4,900 lb (2,223 kg) and 13,800 lb (6,260 kg). Water capacity is 335 gallons (1,268 L), 649 gallons (2,456 L) and 1,068 gallons (4,042 L).

04 How accurate is the ShopJet?

Machine repeatability is listed at 0.0015 in (0.04 mm), and Koike states the machine is built to ISO 230-2. The guidance is 25 mm profile linear rail with a 30 mm rail on the gantry, driven by a direct drive helical rack and pinion with a pinion on each side.