Cat 303 CR vs Kubota U35-4

The Kubota U35-4 is the heavier machine, at 3.83 t against 3.55 t, and the Kubota U35-4 has more power (17.8 kW against 17.6 kW).

The Kubota U35-4 is ahead on: more power, digs deeper, reaches further, dumps higher, faster, lower to transport.

Below, every figure both makers publish sits side by side, with the Cat 303 CR and the Kubota U35-4 drawn to the same scale from their dimension drawings.

Cat · mini excavator
Cat 303 CR
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Kubota · mini excavator
Kubota U35-4
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At a glance

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

Figure	Cat 303 CR	Kubota U35-4
Operating weight	3,545 kg	3,830 kg
Net powerHigher is better	17.6 kW	17.8 kW+1%
Max digging depthHigher is better	2.65 m	2.97 m+12%
Max reach at ground levelHigher is better	4.83 m	5.165 m+7%
Max dumping heightHigher is better	3.17 m	3.37 m+6%
Travel speed (high)Higher is better	4.5 km/h	4.6 km/h+2%
Overall height (to top of cab)Lower is better	2.48 m	2.47 m
Overall length	4.51 m	4.75 m

All specifications

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

Differences only(96)

FigureCat 303 CR Kubota U35-4

Dimensions

Tail swing radius0.775 mTail swing without counterweightNot published

Tail swing radius, light counterweight0.845 mNot published

Tail swing radius, extra counterweight0.89 mNot published

Max blade height0.385 mBlade raised, above groundNot published

Max blade depth0.535 mBlade lowered, below groundNot published

Overall height (to top of boom)1.6 mNot published

Overall height (to top of boom), long stick1.92 mNot published

Overall height (to top of cab)2.48 mOverall shipping height2.47 mCanopy model 2.48 m

Swing bearing height0.57 mNot published

Track length2.07 mOverall undercarriage length2.09 mCrawler length

Overall length4.51 m4.75 mTransport

Overall length, long stick4.56 mNot published

Shoe width0.3 mTrack belt/shoe width0.295 mRubber track

Width of crawler1.55 mTrack widthNot published

Ground clearance (minimum)0.31 mGround clearance0.29 m

Min turning radius, without boom swingNot published2.25 m

Min turning radius, with boom swingNot published1.755 m

Min tail turning radiusNot published0.901 m

Overall widthNot published1.7 m

Tumbler distanceNot published1.67 m

Blade lift above groundNot published0.37 m

Blade drop below groundNot published0.37 m

Performance

Max digging depth2.65 m2.97 m

Max digging depth, long stick2.95 mNot published

Max vertical wall digging depth1.82 mVertical wall, standard stick2.013 m

Max vertical wall digging depth, long stick2.07 mNot published

Max reach at ground level4.83 m5.165 m

Max reach at ground level, long stick5.11 mNot published

Max digging reach4.98 mMaximum reach, standard stick5.272 m

Max digging reach, long stick5.24 mNot published

Max digging height4.51 m4.844 m

Max digging height, long stick4.65 mNot published

Max dumping height3.17 mMaximum dump clearance, standard stick3.37 m

Max dumping height, long stick3.31 mNot published

Boom-in reach1.75 mBoom in reach, standard stickNot published

Boom-in reach, long stick1.91 mNot published

Boom swing offset, right0.87 mBoom swing right (plan view)Not published

Boom swing offset, left0.64 mBoom swing left (plan view)Not published

Boom swing, right50°Not published

Boom swing, left75°Not published

Bucket digging force28 kN2,810 kgfMax. breakout force, bucket

Arm digging force17 kNStick digging force, standard stick1,920 kgfMax. breakout force, arm

Arm digging force, long stick15 kNStick digging force, long stickNot published

Swing speed9.0 rpmMachine swing speed8.5rpm

Max traction forceNot published2,760 kgf

Boom swing angle, leftNot published70°

Boom swing angle, rightNot published48°

Weight

Operating weight3,545 kg3,830 kgCab model, rubber tracks

Operating weight, cab (minimum)3,140 kgNot published

Operating weight, canopy (minimum)3,025 kgNot published

Operating weight, canopy (maximum)3,425 kgNot published

EU CE plate weight, canopy3,080 kgNot published

EU CE plate weight, cab3,180 kgNot published

Weight increase, cab115 kgNot published

Weight increase, counterweight (light)100 kgNot published

Weight increase, counterweight (extra)250 kgNot published

Weight increase, long stick25 kgNot published

Weight increase, steel tracks125 kgNot published

Operating weight (canopy)Not published3,690 kgCanopy model, rubber tracks

Engine

Engine modelCat C1.1 TurboKubota D1703M-DI-E4

EmissionsU.S. EPA Tier 4 Final / EU Stage VTier 4 compliant

Net power17.6 kW (23.6 hp)ISO 9249, 80/1269/EEC, at 2,400 rpm17.8 kW (23.9 hp)SAE J1349, at 2,200 rpm

Gross power18.4 kW (24.7 hp)Engine power, ISO 1439618.5 kW (24.8 hp)SAE J1995, at 2,200 rpm

Bore77 mmNot published

Stroke81 mmNot published

Displacement1.1 L1.6 L

CylindersNot published3

Hydraulics

Pump flow100 L/min39.6 L/min x 2 + 20.9 L/min x 1Hydraulic pump capacity

Max pressure245 barOperating pressure, equipmentNot published

Operating pressure, travel245 barNot published

Operating pressure, swing176 barNot published

Auxiliary circuit flow, primary65 L/minNot published

Auxiliary circuit flow, secondary25 L/minNot published

Auxiliary flow (AUX1)Not published60 L/min

Hydraulic system, with tankNot published61 L

Travel

Travel speed (high)4.5 km/h4.6 km/h

Travel speed (low)2.6 km/h3 km/h

Max traction force, high speed15 kNNot published

Max traction force, low speed31 kNNot published

Ground pressure, minimum weight27.6 kPaNot published

Ground pressure, maximum weight32.3 kPaNot published

Gradeability (maximum)30°Not published

Blade

Blade width1.55 m1.7 m

Blade height0.35 m0.34 m

Boom and stick

Boom length2.2 mOne-piece boomNot published

Stick length1.26 mNot published

Stick length, long stick1.56 mNot published

Service capacities

Fuel tank45 L45 L

Cooling system4 LNot published

Engine oil4 L5.3 L

Hydraulic tank18 L36 L

Hydraulic system35 LNot published

Final drive (each)0.6 LNot published

Service intervals

Engine oil and filter500 hoursor 6 monthsNot published

Hydraulic oil3,000 hoursNot published

Final drive oil1,000 hoursor 12 monthsNot published

Coolant12,000 hoursNot published

Sources: Cat 303 CR (07A) Mini Excavator Specalog AEHQ8350-04 (09-2025, Global excluding China and Japan) · Kubota Australia, U35-4 Mini Excavator product page (specifications table)

Drawn to scale

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

Cat 303 CRKubota U35-4Same scale, front edges and ground lined up.

Cat 303 CR vs Kubota U35-4: questions

Which is bigger, the Cat 303 CR or Kubota U35-4?

By operating weight the Kubota U35-4 is the biggest at 3.83 t, then the Cat 303 CR at 3.55 t.

Which has more power, the Cat 303 CR or Kubota U35-4?

The Kubota U35-4: Cat 303 CR 17.6 kW (23.6 hp), Kubota U35-4 17.8 kW (23.9 hp) (net power), a 1% difference.

Which digs deeper, the Cat 303 CR or Kubota U35-4?

The Kubota U35-4: Cat 303 CR 2.65 m, Kubota U35-4 2.97 m (max digging depth), a 12% difference.

Which reaches further, the Cat 303 CR or Kubota U35-4?

The Kubota U35-4: Cat 303 CR 4.83 m, Kubota U35-4 5.165 m (max reach at ground level), a 7% 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.