Cat 305 CR vs Kubota KX057-4

The Cat 305 CR is the heavier machine, at 5.7 t against 5.6 t, and the Kubota KX057-4 has more power (33.8 kW against 27.2 kW).

The Cat 305 CR is ahead on: turns tighter. The Kubota KX057-4 is ahead on: more power, digs deeper, reaches further, dumps higher, bigger fuel tank, faster.

Below, every figure both makers publish sits side by side, with the Cat 305 CR and the Kubota KX057-4 drawn to the same scale from their dimension drawings.

Cat · mini excavator
Cat 305 CR
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Kubota · mini excavator
Kubota KX057-4
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At a glance

Bold is the machine ahead on each figure, with its lead.

Figure	Cat 305 CR	Kubota KX057-4
Operating weight	5,695 kg	5,600 kg
Net powerHigher is better	27.2 kW	33.8 kW+24%
Max digging depthHigher is better	3.42 m	3.865 m+13%
Max reach at ground levelHigher is better	5.59 m	6.11 m+9%
Max dumping heightHigher is better	3.7 m	4.18 m+13%
Fuel tankHigher is better	63 L	75 L+19%
Travel speed (high)Higher is better	4.5 km/h	4.9 km/h+9%
Tail swing radiusLower is better	1.095 m+14%	1.27 m
Overall length	5.305 m	5.52 m

All specifications

Every figure the makers publish. Search for one, or show only those that differ.

Differences only(88)

FigureCat 305 CR Kubota KX057-4

Dimensions

Tail swing radius1.095 mTail swing without counterweight1.27 m

Tail swing radius, with counterweight1.2 mNot published

Max blade height0.4 mBlade raised, above ground0.44 m

Max blade depth0.65 mBlade lowered, below ground0.41 m

Overall height (to top of boom)1.82 mNot published

Overall height (to top of boom), long stick1.895 mNot published

Overall height (to top of cab)2.55 mOverall shipping heightNot published

Swing bearing height0.619 mNot published

Track length2.585 mOverall undercarriage length2.5 mcrawler length

Overall length5.305 m5.52 m

Overall length, long stick5.34 mNot published

Shoe width0.4 mTrack belt/shoe width0.4 mrubber

Width of crawler1.98 mTrack widthNot published

Ground clearance (minimum)0.335 mGround clearance0.31 m

Overall heightNot published2.55 m

Overall widthNot published1.96 m

Track length on groundNot published1.99 mtumbler distance

Performance

Max digging depth3.42 m3.865 m

Max digging depth, long stick3.67 mNot published

Max vertical wall digging depth2.335 mVertical wall, standard stick1.71 m

Max vertical wall digging depth, long stick2.56 mNot published

Max reach at ground level5.59 m6.11 mmax digging radius at ground

Max reach at ground level, long stick5.835 mNot published

Max digging reach5.755 mMaximum reach, standard stick6.24 mmax digging radius

Max digging reach, long stick5.99 mNot published

Max digging height5.215 m5.74 m

Max digging height, long stick5.355 mNot published

Max dumping height3.7 mMaximum dump clearance, standard stick4.18 m

Max dumping height, long stick3.845 mNot published

Boom-in reach2.57 mBoom in reach, standard stickNot published

Boom-in reach, long stick2.58 mNot published

Boom swing offset, right0.865 mBoom swing right (plan view)Not published

Boom swing offset, left0.615 mBoom swing left (plan view)Not published

Boom swing, left72°Not published

Boom swing, right50°Not published

Bucket digging force49 kN5,070 kgfmax breakout force, bucket

Arm digging force28 kNStick digging force, standard stick2,560 kgfmax breakout force, arm

Arm digging force, long stick25 kNStick digging force, long stickNot published

Swing speed9.0 rpmMachine swing speed9.3 rpm

Weight

Operating weight5,695 kg5,600 kg

Operating weight, cab (minimum)5,035 kgNot published

Operating weight, canopy (minimum)4,936 kgNot published

Operating weight, canopy (maximum)5,596 kgNot published

Weight increase, counterweight242 kgNot published

Weight increase, long stick34 kgNot published

Weight increase, steel tracks with pads375 kgNot published

Weight increase, angle blade92 kgNot published

Engine

Engine modelCat C1.7 TurboKubota V2607-DI

EmissionsBrazil MAR-1 (equivalent to EU Stage IIIA)Not published

Net power27.2 kW (36.5 hp)ISO 9249, 80/1269/EEC, at 2,400 rpm33.8 kW (45.4 HP)SAE J1349, at 2,200 rpm

Gross power29 kW (38.9 hp)SAE J1995:2014, at 2,400 rpm35.5 kW (47.6 HP)SAE J1995, at 2,200 rpm

Bore84 mmNot published

Stroke100 mmNot published

Displacement1.7 L2.6 L

Hydraulics

Pump flow133 L/min56.1 L/min (14.8 gpm) variable x 2 + 37.0 L/min (9.8 gpm) gear

Max pressure265 barOperating pressure, equipmentNot published

Operating pressure, travel265 barNot published

Operating pressure, swing200 barNot published

Auxiliary circuit flow, primary80 L/minNot published

Auxiliary circuit flow, secondary28 L/minNot published

Auxiliary flowNot published75 L/minAUX1; AUX2 37 L/min (9.8 gpm)

Travel

Travel speed (high)4.5 km/h4.9 km/h

Travel speed (low)2.8 km/h2.8 km/h

Max traction force, high speed25 kNNot published

Max traction force, low speed51 kNNot published

Ground pressure, minimum weight26.9 kPaNot published

Ground pressure, maximum weight31.8 kPaNot published

Gradeability (maximum)30°Not published

Blade

Blade width1.98 mStraight blade1.96 m

Blade height0.415 mStraight blade0.41 m

Blade width, angle blade1.98 mNot published

Blade height, angle blade0.4 mNot published

Blade angle, left / right25°Angle blade, each sideNot published

Boom and stick

Stick length1.351 mNot published

Stick length, long stick1.601 mNot published

Service capacities

Fuel tank63 L75 L

Cooling system11 LNot published

Engine oil6 LNot published

Hydraulic tank60 L45 Lreservoir

Hydraulic system75 LNot published

Final drive (each)1 LNot published

Hydraulic system, with tankNot published79 L

Service intervals

Engine oil and filter500 hoursor 6 monthsNot published

Hydraulic oil2,000 hoursNot published

Final drive oil2,000 hoursor 12 monthsNot published

Coolant12,000 hoursor 72 monthsNot published

Working range

Min turning radiusNot published2.42 m

Boom swingNot published70 deg. left / 55 deg. right

Max traction forceNot published6,567 kgf

Ground pressureNot published0.323 kgf/cm2 (4.59 psi) rubber tracks

Sources: Cat 305 CR Mini Excavator small Specalog AEHQ8406 (05-2022) · Kubota KX057-4 brochure 8783-02-CL (Kubota Canada, 2009-09), copy on kitchingplanthire.co.uk

Drawn to scale

Side views measured off each maker's dimension drawing, front edges and ground lined up.

Cat 305 CRKubota KX057-4Same scale, front edges and ground lined up.

Cat 305 CR vs Kubota KX057-4: questions

Which is bigger, the Cat 305 CR or Kubota KX057-4?

By operating weight the Cat 305 CR is the biggest at 5.7 t, then the Kubota KX057-4 at 5.6 t.

Which has more power, the Cat 305 CR or Kubota KX057-4?

The Kubota KX057-4: Cat 305 CR 27.2 kW (36.5 hp), Kubota KX057-4 33.8 kW (45.4 HP) (net power), a 24% difference.

Which digs deeper, the Cat 305 CR or Kubota KX057-4?

The Kubota KX057-4: Cat 305 CR 3.42 m, Kubota KX057-4 3.865 m (max digging depth), a 13% difference.

Which reaches further, the Cat 305 CR or Kubota KX057-4?

The Kubota KX057-4: Cat 305 CR 5.59 m, Kubota KX057-4 6.11 m (max reach at ground level), a 9% difference.

Which has the bigger fuel tank, the Cat 305 CR or Kubota KX057-4?

The Kubota KX057-4: Cat 305 CR 63 L, Kubota KX057-4 75 L (fuel tank), a 19% difference.

Which turns tighter, the Cat 305 CR or Kubota KX057-4?

The Cat 305 CR: Cat 305 CR 1.095 m, Kubota KX057-4 1.27 m (tail swing radius), a 14% difference.

Where do these figures come from?

Each model's own published spec sheet or brochure, linked under the table. Builds differ by market and year, so confirm the figures for a particular machine with its dealer.

Can I rent or buy these machines in the UAE?

Each model's page lists the ones for hire and for sale on EquipmentsFinder now, with typical prices in AED.