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Kato HD307

Series: Kato Midi Excavator

Source: https://www.mascus.jp/%E4%B8%AD%E5%8F%A4%E5%BB%BA%E8%A8%AD%E

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The Kato Midi Excavator series from Kato includes the HD307. The engine delivers 57.2 hp (42.1 kW), has 4 cylinders, with a displacement of 2,771.1 cm³. Torque is 188.1 Nm. Rated speed is 2,200 rpm. The unladen weight is 6,400 kg. Ground clearance is 362.7 mm. The tank holds 140.1 litres. Maximum torque is reached at 1,800 rpm. The pump delivers 164.3 l/min. The hydraulic tank holds 105.2 litres. Working pressure is 274 bar. The cooling system holds 9.8 litres. The oil fill is 8.3 litres. The electrical system runs on 24 V. The engine fitted is the A-4JB1. The Kato Midi Excavator series covers 3 models. Rated output within it ranges from 54.7 to 57.2 hp; the HD307 sits at the top of that range with 57.2 hp. Its immediate neighbours are the HD308US below it with 55.2 hp. 62 Kato models across 5 series are on record. The model is listed under Excavators & compaction. 18 verified figures from 1 source are on file.

Technical data

Engine

Engine model	A-4JB1correct
Power	57.2 hp (42.1 kW)correct
Rated speed	2,200 rpmcorrect
Torque	188.1correct
Speed at max. torque	1,800 rpmcorrect
Cylinders	4correct
Displacement	2,771.1 cm³correct
Coolant capacity	9.8 lcorrect
Engine oil capacity	8.3 lcorrect

Dimensions and weights

Ground clearance	362.7correct
Unladen weight	6,400 kgcorrect

Drivetrain and chassis

System voltage	24 Vcorrect

Working data

Pump flow	164.3 l/mincorrect
Hydraulic oil capacity	105.2 lcorrect
Hydraulic pressure	274 barcorrect
Fuel tank capacity	140.1 lcorrect

Other data

Height	2,560.3correct

Where this model stands

Power-to-weight ratio: 6.6 kW/t (42 kW / 6.4 t)

Stronger than 13% of the excavators & compaction in the register — out of 1,666 models with a stated power figure.

Calculated from the documented figures above — not a rating.

Frequently asked questions

How much power does the Kato HD307 have?

The Kato HD307 delivers 57.2 hp.

How much does the Kato HD307 weigh?

The unladen weight is 6,400 kg.

What engine does the Kato HD307 have?

4 cylinders, 2,771 cm³ displacement.

What to check before buying

Check the hour meter against the service records — a replaced instrument is the most common gap.
Compare the data plate and chassis number with the papers.
Check the weights in the papers against the figures here — attachments change them.
Load the hydraulics and watch for sag.
Ask about parts availability for this build year — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 18 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.

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