Machine models

Kato HD250VII, HD307, and HD308US specifications

Entries in this reference
Listing-entry count
3

Short answer

Kato HD250VII, HD307, and HD308US: full-size excavators.

Selected configuration figures
Configuration	Documented field and quantity
HD250VII	Gross Power 54 hp Operating Weight 13,889 lb
HD307	Gross Power 56.4 hp Operating Weight 14,110 lb
HD308US	Gross Power 54.4 hp Operating Weight 15,653 lb

HD250VII, HD307, and HD308US specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Kato	HD250VII, HD307, and HD308US	3	HD250VII, HD307, and HD308US

Boom/Stick Option (Hex) 1
Specification	HD250VII	HD307	HD308US
Shipping Length Of Unit	19.89 ft	19.95 ft	19.1 ft
Shipping Height Of Unit	8.32 ft	8.57 ft	8.54 ft
Max Cutting Height	21.43 ft	24.28 ft	24.38 ft
Max Loading Height	14.7 ft	17.33 ft	17.46 ft
Max Vertical Wall Digging Depth	11.62 ft	12.28 ft	11.88 ft
Max Digging Depth	13.52 ft	13.82 ft	13.52 ft

Specification	HD307
Max Reach Along Ground	20.61 ft

Specification	HD307	HD308US
Boom/Stick Option (Hex) 1	Boom length 3690mm Stick length 1720mm	Boom length 3830mm Stick length 1620mm

Dimensions and weight
Specification	HD250VII	HD307	HD308US
Width To Outside Of Tracks	7.06 ft	7.55 ft	7.55 ft
Length Of Track On Ground	6.96 ft	6.96 ft	7.42 ft
Ground Clearance	1.19 ft	1.19 ft	1.19 ft
Height To Top Of Cab	8.32 ft	8.4 ft	8.54 ft
Tail Swing Radius	5.75 ft	5.75 ft	3.91 ft
Removal Counterweight Clearance	2.4 ft	2.4 ft	2.43 ft

Undercarriage
Specification	HD250VII	HD307	HD308US
Shoe Size	17.72 in	17.72 in	17.72 in
Track Gauge	5.58 ft	6.07 ft	6.07 ft
Ground Pressure	4.27 psi	4.41 psi	4.56 psi
Max Travel Speed	3.42 mph	3.42 mph	3.11 mph

Specification	HD307	HD308US
Drawbar Pull	_ -	_ -
Number Of Shoes Per Side	43	39

Specification	HD307
Number Of Carrier Rollers Per Side	1
Number Of Track Rollers Per Side	5

Engine
Specification	HD250VII	HD307	HD308US
Number Of Cylinders	6	4	4
Engine Model	C S4F	A-4JB1	CC-4JG1
Gross Power	54 hp	56.4 hp	54.4 hp
Power Measured @	2,200 rpm	2,200 rpm	2,100 rpm
Displacement	180.4 cu in	169.1 cu in	186.7 cu in

Specification	HD250VII
Aspiration	turbocharged

Specification	HD307	HD308US
Max Torque	138.7 lb-ft	140.9 lb-ft
Torque Measured @	1,800 rpm	1,800 rpm

Operational
Specification	HD250VII	HD307	HD308US
Operating Weight	13,889 lb	14,110 lb	15,653 lb
Fuel Capacity	37 gal	37 gal	26.5 gal
Hydraulic System Relief Valve Pressure	3,980 psi	3,974 psi	4,554 psi

Specification	HD307	HD308US
Cooling System Fluid Capacity	2.6 gal	3 gal
Operating Voltage	24 V	24 V
Hydraulic System Fluid Capacity	27.8 gal	25.1 gal
Engine Oil Capacity	2.2 gal	2.6 gal
Alternator Supplied Amperage	20 amps	30 amps
Hydraulic Pump Flow Capacity	43.4 gpm	40.8 gpm

Specification	HD307
Swing Drive Fluid Capacity	0.4 gal

Swing Mechanism
Specification	HD250VII	HD307	HD308US
Swing Speed	16 rpm	13 rpm	12.5 rpm

Buckets
Specification	HD250VII	HD307	HD308US
Reference Bucket Capacity	0.4 yd3	0.4 yd3	0.4 yd3
Minimum Bucket Capacity	0.2 yd3	0.2 yd3	0.2 yd3
Maximum Bucket Capacity	0.5 yd3	0.5 yd3	0.5 yd3

Variants — Source comparison annotation
Source guide	Differing-field count reported
HD250VII, HD307, and HD308US	39

Ratios
Figure	HD250VII	HD307	HD308US
Engine horsepower per 1,000 lb of weight	3.9	4.0	3.5
Fuel tank per engine horsepower	0.69 gal	0.66 gal	0.49 gal

Figure	HD307	HD308US
Hydraulic power from the listed pump flow and relief pressure	100.6 hp	108.4 hp

Reference directory classification
Equipment group	full-size excavator

HD250VII, HD307, and HD308US: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	full-size excavator	Kato and the HD250VII, HD308US. That is too few titles to say what owners mostly ask about, so the most recent are listed instead	3

Kato Hd250vii Need Hydraulic And Pump Pdf Anyone Help Me Please (Heavy Equipment Forums, 2025-08-03)
Kato Hd250vii (Heavy Equipment Forums, 2025-05-11)
Kato Hd308us 2007 Need Manual (Heavy Equipment Forums, 2022-10-21)

HD250VII, HD307, and HD308US: dated market and recall observations — Dated listing search
Date	Listing index	Equipment class	Names queried	Result
2026-09-24	MachineryTrader (machinerytrader.com)	full-size excavator	HD250VII, HD307, HD308US	No matching offers in this snapshot

Dated CPSC search
Date	Database	Names queried	Result
2026-09-24	U.S. Consumer Product Safety Commission	Kato; HD250VII, HD307, HD308US	No matching recall in the stated search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Kato HD250VII — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Kato HD307 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Kato HD308US — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Kato HD250VII, HD307, and HD308US — Heavy Equipment Forums. Observed 2026-09-24.
Federal agency data	Federal agency data: Recall database search for Kato — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

Recorded observations — Forum-title snapshot
Observation field	Recorded value
Title count	3
Forum indexes	Heavy Equipment Forums
Search wording	the HD250VII, HD307, and HD308US full-size excavator
Latest title quoted by the reference	Kato Hd250vii Need Hydraulic And Pump Pdf Anyone Help Me Please

Kato HD250VII, HD307, and HD308US: Configuration records

HD250VII

Specification	Source figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit	19.89 ft
Shipping Height Of Unit	8.32 ft
Max Cutting Height	21.43 ft
Max Loading Height	14.7 ft
Max Vertical Wall Digging Depth	11.62 ft
Max Digging Depth	13.52 ft
Dimensions and weight
Width To Outside Of Tracks	7.06 ft
Length Of Track On Ground	6.96 ft
Ground Clearance	1.19 ft
Height To Top Of Cab	8.32 ft
Tail Swing Radius	5.75 ft
Removal Counterweight Clearance	2.4 ft
Undercarriage
Shoe Size	17.72 in
Track Gauge	5.58 ft
Ground Pressure	4.27 psi
Max Travel Speed	3.42 mph
Engine
Number Of Cylinders	6
Engine Model	C S4F
Gross Power	54 hp
Power Measured @	2,200 rpm
Displacement	180.4 cu in
Aspiration	turbocharged
Operational
Operating Weight	13,889 lb
Fuel Capacity	37 gal
Hydraulic System Relief Valve Pressure	3,980 psi
Swing Mechanism
Swing Speed	16 rpm
Buckets
Reference Bucket Capacity	0.4 yd3
Minimum Bucket Capacity	0.2 yd3
Maximum Bucket Capacity	0.5 yd3

Source

HD307

Specification	Source figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit	19.95 ft
Shipping Height Of Unit	8.57 ft
Max Cutting Height	24.28 ft
Max Loading Height	17.33 ft
Max Vertical Wall Digging Depth	12.28 ft
Max Digging Depth	13.82 ft
Max Reach Along Ground	20.61 ft
Boom/Stick Option (Hex) 1	Boom length 3690mm Stick length 1720mm
Dimensions and weight
Width To Outside Of Tracks	7.55 ft
Length Of Track On Ground	6.96 ft
Ground Clearance	1.19 ft
Height To Top Of Cab	8.4 ft
Tail Swing Radius	5.75 ft
Removal Counterweight Clearance	2.4 ft
Undercarriage
Shoe Size	17.72 in
Track Gauge	6.07 ft
Ground Pressure	4.41 psi
Max Travel Speed	3.42 mph
Number Of Shoes Per Side	43
Number Of Carrier Rollers Per Side	1
Number Of Track Rollers Per Side	5
Engine
Number Of Cylinders	4
Engine Model	A-4JB1
Gross Power	56.4 hp
Power Measured @	2,200 rpm
Displacement	169.1 cu in
Max Torque	138.7 lb-ft
Torque Measured @	1,800 rpm
Operational
Operating Weight	14,110 lb
Fuel Capacity	37 gal
Hydraulic System Relief Valve Pressure	3,974 psi
Cooling System Fluid Capacity	2.6 gal
Operating Voltage	24 V
Hydraulic System Fluid Capacity	27.8 gal
Engine Oil Capacity	2.2 gal
Swing Drive Fluid Capacity	0.4 gal
Alternator Supplied Amperage	20 amps
Hydraulic Pump Flow Capacity	43.4 gpm
Swing Mechanism
Swing Speed	13 rpm
Buckets
Reference Bucket Capacity	0.4 yd3
Minimum Bucket Capacity	0.2 yd3
Maximum Bucket Capacity	0.5 yd3

Source

HD308US

Specification	Source figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit	19.1 ft
Shipping Height Of Unit	8.54 ft
Max Cutting Height	24.38 ft
Max Loading Height	17.46 ft
Max Vertical Wall Digging Depth	11.88 ft
Max Digging Depth	13.52 ft
Boom/Stick Option (Hex) 1	Boom length 3830mm Stick length 1620mm
Dimensions and weight
Width To Outside Of Tracks	7.55 ft
Length Of Track On Ground	7.42 ft
Ground Clearance	1.19 ft
Height To Top Of Cab	8.54 ft
Tail Swing Radius	3.91 ft
Removal Counterweight Clearance	2.43 ft
Undercarriage
Shoe Size	17.72 in
Track Gauge	6.07 ft
Ground Pressure	4.56 psi
Max Travel Speed	3.11 mph
Number Of Shoes Per Side	39
Engine
Number Of Cylinders	4
Engine Model	CC-4JG1
Gross Power	54.4 hp
Power Measured @	2,100 rpm
Displacement	186.7 cu in
Max Torque	140.9 lb-ft
Torque Measured @	1,800 rpm
Operational
Operating Weight	15,653 lb
Fuel Capacity	26.5 gal
Hydraulic System Relief Valve Pressure	4,554 psi
Cooling System Fluid Capacity	3 gal
Operating Voltage	24 V
Hydraulic System Fluid Capacity	25.1 gal
Engine Oil Capacity	2.6 gal
Alternator Supplied Amperage	30 amps
Hydraulic Pump Flow Capacity	40.8 gpm
Swing Mechanism
Swing Speed	12.5 rpm
Buckets
Reference Bucket Capacity	0.4 yd3
Minimum Bucket Capacity	0.2 yd3
Maximum Bucket Capacity	0.5 yd3

Source

Compare Kato HD250VII, HD307, HD308US

Boom/Stick Option (Hex) 1
Specification	HD250VII	HD307	HD308US
Shipping Length Of Unit	19.89 ft	19.95 ft	19.1 ft
Shipping Height Of Unit	8.32 ft	8.57 ft	8.54 ft
Max Cutting Height	21.43 ft	24.28 ft	24.38 ft
Max Loading Height	14.7 ft	17.33 ft	17.46 ft
Max Vertical Wall Digging Depth	11.62 ft	12.28 ft	11.88 ft
Max Digging Depth	13.52 ft	13.82 ft	13.52 ft

Dimensions and weight
Specification	HD250VII	HD307	HD308US
Width To Outside Of Tracks	7.06 ft	7.55 ft	7.55 ft
Length Of Track On Ground	6.96 ft	6.96 ft	7.42 ft
Ground Clearance	1.19 ft	1.19 ft	1.19 ft
Height To Top Of Cab	8.32 ft	8.4 ft	8.54 ft
Tail Swing Radius	5.75 ft	5.75 ft	3.91 ft
Removal Counterweight Clearance	2.4 ft	2.4 ft	2.43 ft

Undercarriage
Specification	HD250VII	HD307	HD308US
Shoe Size	17.72 in	17.72 in	17.72 in
Track Gauge	5.58 ft	6.07 ft	6.07 ft
Ground Pressure	4.27 psi	4.41 psi	4.56 psi
Max Travel Speed	3.42 mph	3.42 mph	3.11 mph

Engine
Specification	HD250VII	HD307	HD308US
Number Of Cylinders	6	4	4
Engine Model	C S4F	A-4JB1	CC-4JG1
Gross Power	54 hp	56.4 hp	54.4 hp
Power Measured @	2,200 rpm	2,200 rpm	2,100 rpm
Displacement	180.4 cu in	169.1 cu in	186.7 cu in

Operational
Specification	HD250VII	HD307	HD308US
Operating Weight	13,889 lb	14,110 lb	15,653 lb
Fuel Capacity	37 gal	37 gal	26.5 gal
Hydraulic System Relief Valve Pressure	3,980 psi	3,974 psi	4,554 psi

Swing Mechanism
Specification	HD250VII	HD307	HD308US
Swing Speed	16 rpm	13 rpm	12.5 rpm

Buckets
Specification	HD250VII	HD307	HD308US
Reference Bucket Capacity	0.4 yd3	0.4 yd3	0.4 yd3
Minimum Bucket Capacity	0.2 yd3	0.2 yd3	0.2 yd3
Maximum Bucket Capacity	0.5 yd3	0.5 yd3	0.5 yd3

More in Kato: HD400VII–HD513MRIII, HD900VII–HD1250VIILC, HD550VII–HD820LC.

Kato HD250VII, HD307, and HD308US specifications

Sources for this page

Kato HD250VII, HD307, and HD308US: Configuration records