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    CAT 321 VS CAT 323D3 Excavator

    CAT 321
    ₹75 - 85 lakh*

    CAT 321

    • Weight

      19300 kg

    • Bucket

      1.0 m³

    • Dig. Depth

      5970 mm

    • Engine

      Cat 134 HP

    • Warranty

      1 Year

    • Boom

      5700 mm
    Medium (15-25 Ton)
    CAT 323D3
    Price Available Soon*

    CAT 323D3

    • Weight

      22600 Kg

    • Bucket

      1.20 m³

    • Dig. Depth

      6300 mm

    • Engine

      CAT 152 HP

    • Warranty

      1 Year

    • Boom

      5700 mm
    Medium (15-25 Ton)

    Add Equipment

    The comparisons provided are based on the technical specifications published by the respective OEMs on their official websites and brochures. Please confirm these details directly with the OEMs before making any final decision.

    Key Highlights CAT 321CAT 323D3
    CAT 321 VS CAT 323D3 Excavator
    CAT 321 Excavator
    CAT 321

    ₹75 - 85 lakh

    CAT 323D3 Price in India
    CAT 323D3

    Price Available Soon

    Particulars CAT 321 CAT 323D3

    CAT 321 vs CAT 323D3: Which One Should You Buy?

    Both come from the same maker and both work the 20 ton class, so you are choosing capability against daily cost. The CAT 321 is the more balanced machine, easier to run and maintain, and suits general building, road and canal work at a steady pace. The CAT 323D3 gives more engine power with a bigger bucket, so it moves more earth per hour on heavy digging and loading.

    Since service and parts are the same for both, this decision comes down to one number: passes per tipper. If the bigger bucket of the 323D3 saves you a swing or two on every truck, it moves more earth per hour and the extra cost returns through the year. If your trucks are small or your work is mixed, that capacity sits idle and you only pay for it in diesel. See the CAT excavator range, the full excavator range, or read our excavator applications guide.

    CAT 321 Excavator

    Pros:

    • Fuel-efficient Cat C3.6 engine at 134 HP
    • Reinforced structures for durability and long service life
    • Emphasis on operator comfort and easy service access
    • 1.0 m³ Bucket capacity suited for various tasks

    Cons:

    • Lower engine power than the CAT 323D3
    • Smaller max digging depth compared to CAT 323D3

    CAT 323D3 Excavator

    Pros:

    • Greater engine power with CAT 152 HP and larger displacement (7.01 L)
    • Higher bucket capacity at 1.20 m³
    • Longer undercarriage providing greater stability
    • Greater main pump flow at 400 L/min

    Cons:

    • Heavier operating weight could affect transportability
    • Higher fuel tank capacity indicates potentially higher fuel consumption

    Pros:

    Cons:

    Closing Recommendation

    Both machines carry the same CAT support behind them, so choose only on capability and cost. Take the CAT 321 if your work is general building, road and canal jobs with normal tippers, and you want lower daily diesel and simpler upkeep. Take the CAT 323D3 if you dig hard ground or load trucks all day, and the bigger bucket saves you a swing on every truck, which turns into more earth moved by evening. So match the machine to your work: CAT 321 for steady general work at lower cost, CAT 323D3 for heavy digging and fast truck loading.

    CAT 321 Vs CAT 323D3 Excavator Price, Technical Specifications & Features

    Brand Caterpillar Excavator Caterpillar Excavator
    Type Medium (15-25 Ton) Medium (15-25 Ton)
    Operating Cost ₹75 - 85 lakh Price Available Soon
    Price ₹75 - 85 lakh Price Available Soon
    Weight 19300 kg 22600 Kg
    Bucket 1.0 m³ 1.20 m³
    Max Digging Depth 5970 mm 6300 mm
    Engine Cat 134 HP CAT 152 HP
    Warranty 1 Year 1 Year
    Boom 5700 mm 5700 mm
    Quick Overview:

    The CAT 321 is a 21-ton hydraulic crawler excavator built for pipeline work, road foundations, and medium-scale earthmoving jobs across India. It is powered by a Cat C3.6 engine delivering 134 HP at 2,000 rpm. The electrohydraulic system works in sync with the engine, moving more material while burning less fuel per cycle. Weighing approximately 19,300 kg, this heavy-duty CAT excavator provides a stable digging platform on both firm and uneven ground. The maximum digging depth of 5,970 mm suits most foundation, trench, and utility excavation tasks. A bucket capacity of 1.0 m³ ensures steady material throughput per pass. Boom and stick regeneration circuits sharpen cycle times and lower fuel draw simultaneously. Eco mode cuts consumption further, lift and dig capacity remain fully intact. The X-structure lower frame spreads load evenly across the tracked undercarriage. Cat VisionLink telematics allow remote monitoring of fuel use, location, and maintenance alerts. The 370-litre fuel tank supports long shift operation without mid-day refuelling stops. A one-year warranty covers materials and workmanship through authorised Cat dealerships. The CAT 321 excavator price in India ranges between Rs. 75 to 85 lakh. This excavator from Caterpillar Construction Equipment is best suited for infrastructure contractors and site developers managing road, canal, and foundation projects.

    The CAT 323D3 is a 22-ton hydraulic crawler excavator designed for precise earthmoving, canal digging, and high-production construction across Indian sites. It has a Cat C7.1 engine that delivers 152 HP at 1,800 rpm, providing strong and controlled output under varying load conditions. Weighing about 22,600 kg, it features a heavy-duty undercarriage with a solid counterweight, ensuring stable digging and lifting. The maximum digging depth of 6,300 mm and a ground-level reach of 9.47 m make it suitable for wide-area and deep excavation work. A 1.20 m³ severe-duty bucket is designed to resist abrasion for long service life in gravel, rock, and coarse material. Tandem pumps deliver efficient hydraulic performance, giving operators precise control over all functions. The economy mode ensures this heavy-duty CAT excavator reduces fuel consumption by up to 15% without sacrificing digging or lifting force. The 410-litre fuel tank allows the machine to run through demanding shifts without frequent refuelling. It operates reliably in demanding site conditions. The CAT 323D3 excavator price in India ranges from Rs. 80 to 90 lakh. This excavator from Caterpillar Construction Equipment is a capable option for infrastructure companies and contractors involved in highway cuts, canal work, and deep foundation projects across India.
    Agency review

    Planning to buy the CAT 321 Excavator in India? Get the best price, EMI & finance options, and delivery timelines by submitting a quick enquiry.

    Planning to buy the CAT 323D3 Excavator in India? Get the best price, EMI & finance options, and delivery timelines by submitting a quick enquiry.

    CAT 321 vs CAT 323D3: Which One Should You Buy?

    Both come from the same maker and both work the 20 ton class, so you are choosing capability against daily cost. The CAT 321 is the more balanced machine, easier to run and maintain, and suits general building, road and canal work at a steady pace. The CAT 323D3 gives more engine power with a bigger bucket, so it moves more earth per hour on heavy digging and loading.

    Since service and parts are the same for both, this decision comes down to one number: passes per tipper. If the bigger bucket of the 323D3 saves you a swing or two on every truck, it moves more earth per hour and the extra cost returns through the year. If your trucks are small or your work is mixed, that capacity sits idle and you only pay for it in diesel. See the CAT excavator range, the full excavator range, or read our excavator applications guide.

    CAT 321 Excavator

    Pros:

    • Fuel-efficient Cat C3.6 engine at 134 HP
    • Reinforced structures for durability and long service life
    • Emphasis on operator comfort and easy service access
    • 1.0 m³ Bucket capacity suited for various tasks

    Cons:

    • Lower engine power than the CAT 323D3
    • Smaller max digging depth compared to CAT 323D3

    CAT 323D3 Excavator

    Pros:

    • Greater engine power with CAT 152 HP and larger displacement (7.01 L)
    • Higher bucket capacity at 1.20 m³
    • Longer undercarriage providing greater stability
    • Greater main pump flow at 400 L/min

    Cons:

    • Heavier operating weight could affect transportability
    • Higher fuel tank capacity indicates potentially higher fuel consumption

    Pros:

    Cons:

    Closing Recommendation

    Both machines carry the same CAT support behind them, so choose only on capability and cost. Take the CAT 321 if your work is general building, road and canal jobs with normal tippers, and you want lower daily diesel and simpler upkeep. Take the CAT 323D3 if you dig hard ground or load trucks all day, and the bigger bucket saves you a swing on every truck, which turns into more earth moved by evening. So match the machine to your work: CAT 321 for steady general work at lower cost, CAT 323D3 for heavy digging and fast truck loading.

    CAT 321 Vs CAT 323D3 Excavator Price, Technical Specifications & Features

    CAT 321 CAT 323D3
    Brand
    Caterpillar Excavator Caterpillar Excavator
    Type
    Medium (15-25 Ton) Medium (15-25 Ton)
    Price
    ₹75 - 85 lakh Price Available Soon
    Weight
    19300 kg 22600 Kg
    Bucket
    1.0 m³ 1.20 m³
    Max Digging Depth
    5970 mm 6300 mm
    Engine
    Cat 134 HP CAT 152 HP
    Warranty
    1 Year 1 Year
    Boom
    5700 mm 5700 mm
    Quick Overview:

    The CAT 321 is a 21-ton hydraulic crawler excavator built for pipeline work, road foundations, and medium-scale earthmoving jobs across India. It is powered by a Cat C3.6 engine delivering 134 HP at 2,000 rpm. The electrohydraulic system works in sync with the engine, moving more material while burning less fuel per cycle. Weighing approximately 19,300 kg, this heavy-duty CAT excavator provides a stable digging platform on both firm and uneven ground. The maximum digging depth of 5,970 mm suits most foundation, trench, and utility excavation tasks. A bucket capacity of 1.0 m³ ensures steady material throughput per pass. Boom and stick regeneration circuits sharpen cycle times and lower fuel draw simultaneously. Eco mode cuts consumption further, lift and dig capacity remain fully intact. The X-structure lower frame spreads load evenly across the tracked undercarriage. Cat VisionLink telematics allow remote monitoring of fuel use, location, and maintenance alerts. The 370-litre fuel tank supports long shift operation without mid-day refuelling stops. A one-year warranty covers materials and workmanship through authorised Cat dealerships. The CAT 321 excavator price in India ranges between Rs. 75 to 85 lakh. This excavator from Caterpillar Construction Equipment is best suited for infrastructure contractors and site developers managing road, canal, and foundation projects.

    The CAT 323D3 is a 22-ton hydraulic crawler excavator designed for precise earthmoving, canal digging, and high-production construction across Indian sites. It has a Cat C7.1 engine that delivers 152 HP at 1,800 rpm, providing strong and controlled output under varying load conditions. Weighing about 22,600 kg, it features a heavy-duty undercarriage with a solid counterweight, ensuring stable digging and lifting. The maximum digging depth of 6,300 mm and a ground-level reach of 9.47 m make it suitable for wide-area and deep excavation work. A 1.20 m³ severe-duty bucket is designed to resist abrasion for long service life in gravel, rock, and coarse material. Tandem pumps deliver efficient hydraulic performance, giving operators precise control over all functions. The economy mode ensures this heavy-duty CAT excavator reduces fuel consumption by up to 15% without sacrificing digging or lifting force. The 410-litre fuel tank allows the machine to run through demanding shifts without frequent refuelling. It operates reliably in demanding site conditions. The CAT 323D3 excavator price in India ranges from Rs. 80 to 90 lakh. This excavator from Caterpillar Construction Equipment is a capable option for infrastructure companies and contractors involved in highway cuts, canal work, and deep foundation projects across India.

    CAT 321 Vs CAT 323D3 Excavator Key Highlights

    CAT 321 CAT 323D3
    Engine Make Cat C3.6 Cat C7.1
    Fuel Tank 370 L 410 L
    Engine Displacment 3.6 L 7.01 L
    Under Carriage 4100 mm 4460 mm
    Hydraulic System 218 L 260 L
    Arm 2250 mm 2500 mm
    Max Digging Reach 9150 mm NA
    Fuel Consumption 14-28 L/hour NA
    Overall Width 2800 mm 2980 mm
    Overall Length 9570 mm 9460 mm
    Bucket Digging Force 135 kN 140 kN
    Tailswing Radius 2830 mm 2750 mm
    Track Shoe Width 600 mm 600 mm
    AC Cabin Standard Standard
    GPS Standard Standard

    CAT 321 Vs CAT 323D3 Excavator Key Highlights

    CAT 321 CAT 323D3
    Engine Make
    Cat C3.6 Cat C7.1
    Fuel Tank
    370 L 410 L
    Engine Displacment
    3.6 L 7.01 L
    Under Carriage
    4100 mm 4460 mm
    Hydraulic System
    218 L 260 L
    Arm
    2250 mm 2500 mm
    Max Digging Reach
    9150 mm NA
    Fuel Consumption
    14-28 L/hour NA
    Overall Width
    2800 mm 2980 mm
    Overall Length
    9570 mm 9460 mm
    Bucket Digging Force
    135 kN 140 kN
    Tailswing Radius
    2830 mm 2750 mm
    Track Shoe Width
    600 mm 600 mm
    AC Cabin
    Standard Standard
    GPS
    Standard Standard

    CAT 321 Vs CAT 323D3 Excavator Specifications

    Engine

    18182 3521
    Model Cat 134 HP CAT 152 HP
    Fuel Diesel Diesel
    Type NA NA
    Rated Engine Power 134 HP (100 kW) @ 2000 rpm 152 HP (113 kW) @ 1800 rpm
    Maximum Torque 1969 Nm @ 1400 rpm NA
    Piston Displacement 3.6 L 7.01 L
    Alternator NA 24V
    Battery NA NA
    Starting Motor NA NA

    Undercarriage

    NA NA
    No of Top rollers NA NA
    No of bottom rollers NA NA
    Track Shoes (Each Side) NA NA
    Track Guard NA NA
    Track Shoe width 600 mm 600 mm
    Ground bearing pressure NA NA
    Track Tensioning Grease Grease
    Gradeability 35° NA
    Travel Speed-Low NA NA
    Travel Speed-High NA NA
    Max Tracking Force NA NA

    Hydraulic System

    CAT 321 CAT 323D3
    Hydraulic pump NA NA
    Maximum Flow 315 L/min 400 L/min
    Pilot Pump NA Gear Pump
    Implement Circuit 35 MPa 35.0 MPa
    Swing Circuit 25 MPa 25.0 MPa
    Travel circuit 35 MPa 35.0 MPa
    Pilot circuit NA NA

    Hydraulic Motors

    CAT 321 CAT 323D3
    Travel NA NA
    Swing NA NA

    Service Capacities

    CAT 321 CAT 323D3
    Fuel tank 370 L 410 L
    Engine Coolant 22 L 28 L
    Engine oil 11 L 18 L
    Hydraulic system 218 L 260 L
    Hydraulic tank 115 L 138 L

    Machine Weight

    CAT 321 CAT 323D3
    Operating Weight 19300 kg 22600 Kg

    Working Range

    CAT 321 CAT 323D3
    Boom length 5700 mm 5700 mm
    Arm length 2250 mm 2500 mm
    Max Digging Reach 9150 mm NA
    Max Digging Reach on ground 9150 mm 9470 mm
    Max digging depth 5970 mm 6300 mm
    Max digging height 9120 mm 9250 mm
    Max Dump Height 6250 mm 6290 mm
    Max vertical wallcut depth 5360 mm 5290 mm
    Min swing radius NA NA
    Max Height at Min Swing radius NA NA
    Max height (above ground) NA NA
    Dig depth (below ground) NA NA
    Bucket Digging Force 135 kN 140 kN
    Arm Digging Force 119 kN 118 kN
    Swing Speed 10 rpm 11 rpm

    Dozer Blade

    CAT 321 CAT 323D3
    Dozer Type NA NA
    Dozer Length NA NA
    Digging depth for ground level NA NA
    Approach Angle NA NA
    Width NA NA
    Height NA NA

    Bucket

    CAT 321 CAT 323D3
    Bucket Capacity 1.0 m³ 1.20 m³

    Static Dimensions

    CAT 321 CAT 323D3
    Overall Length 9570 mm 9460 mm
    Overall width 2800 mm 2980 mm
    Overall Height 3250 mm 3100 mm
    Overall Height of Cab 3250 mm 2915 mm
    Upper Width NA NA
    Track Lengh on Ground 3270 mm 3650 mm
    Undercarriage overall length 4100 mm 4460 mm
    Tailswing radius 2830 mm 2750 mm
    Min Ground clearance 430 mm 450 mm
    Track gauge 2200 mm 2380 mm
    Width over tracks NA NA
    Track Height NA NA
    Counterweight Clearance 1020 mm 1020 mm
    Track Shoe Width 600 mm 600 mm

    CAT 321 Vs CAT 323D3 Excavator Specifications

    Engine

    CAT 321 CAT 323D3
    Model
    Cat 134 HP CAT 152 HP
    Fuel
    Diesel Diesel
    Type
    NA NA
    Rated Engine Power
    134 HP (100 kW) @ 2000 rpm 152 HP (113 kW) @ 1800 rpm
    Maximum Torque
    1969 Nm @ 1400 rpm NA
    Piston Displacement
    3.6 L 7.01 L
    Alternator
    NA 24V
    Battery
    NA NA
    Starting Motor
    NA NA

    Undercarriage

    CAT 321 CAT 323D3
    No of Top rollers
    NA NA
    No of bottom rollers
    NA NA
    Track Shoes (Each Side)
    NA NA
    Track Guard
    NA NA
    Track Shoe width
    600 mm 600 mm
    Ground bearing pressure
    NA NA
    Track Tensioning
    Grease Grease
    Gradeability
    35° NA
    Travel Speed-Low
    NA NA
    Travel Speed-High
    NA NA
    Max Tracking Force
    NA NA

    Hydraulic Motors

    CAT 321 CAT 323D3
    Hydraulic pump
    NA NA
    Maximum Flow
    315 L/min 400 L/min
    Pilot Pump
    NA Gear Pump
    Implement Circuit
    35 MPa 35.0 MPa
    Swing Circuit
    25 MPa 25.0 MPa
    Travel circuit
    35 MPa 35.0 MPa
    Pilot circuit
    NA NA

    Service Capacities

    CAT 321 CAT 323D3
    Fuel tank
    370 L 410 L
    Engine Coolant
    22 L 28 L
    Engine oil
    11 L 18 L
    Hydraulic system
    218 L 260 L
    Hydraulic tank
    115 L 138 L

    Machine Weight

    CAT 321 CAT 323D3
    Operating Weight
    19300 kg 22600 Kg

    Working Range

    CAT 321 CAT 323D3
    Boom length
    5700 mm 5700 mm
    Arm length
    2250 mm 2500 mm
    Max Digging Reach
    9150 mm NA
    Max Digging Reach on ground
    9150 mm 9470 mm
    Max digging depth
    5970 mm 6300 mm
    Max digging height
    9120 mm 9250 mm
    Max Dump Height
    6250 mm 6290 mm
    Max vertical wallcut depth
    5360 mm 5290 mm
    Min swing radius
    NA NA
    Max Height at Min Swing radius
    NA NA
    Max height (above ground)
    NA NA
    Dig depth (below ground)
    NA NA
    Bucket Digging Force
    135 kN 140 kN
    Arm Digging Force
    119 kN 118 kN
    Swing Speed
    10 rpm 11 rpm

    Dozer Blade

    CAT 321 CAT 323D3
    Dozer Type
    NA NA
    Dozer Length
    NA NA
    Digging depth for ground level
    NA NA
    Approach Angle
    NA NA
    Width
    NA NA
    Height
    NA NA

    Bucket

    CAT 321 CAT 323D3
    Bucket Capacity
    1.0 m³ 1.20 m³

    Static Dimensions

    CAT 321 CAT 323D3
    Overall Length
    9570 mm 9460 mm
    Overall width
    2800 mm 2980 mm
    Overall Height
    3250 mm 3100 mm
    Overall Height of Cab
    3250 mm 2915 mm
    Upper Width
    NA NA
    Track Lengh on Ground
    3270 mm 3650 mm
    Undercarriage overall length
    4100 mm 4460 mm
    Tailswing radius
    2830 mm 2750 mm
    Min Ground clearance
    430 mm 450 mm
    Track gauge
    2200 mm 2380 mm
    Width over tracks
    NA NA
    Track Height
    NA NA
    Counterweight Clearence
    1020 mm 1020 mm
    Track Shoe Width
    600 mm 600 mm

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    Frequently Asked Question

    Ans.

    Count bucket loads per tipper. If the bigger bucket on the CAT 323D3 fills your truck in fewer swings, it moves more earth per hour and earns the extra cost back. If your tippers are small or your work varies, the CAT 321 gives you the same job at lower daily cost.

    Ans.

    The CAT 321 burns less per hour and is easier to maintain. But on heavy loading, the 323D3 can cost less per truckload because it does more work for the fuel it uses. Compare diesel per truckload rather than per hour, using your own material.

    Ans.

    Yes. Both are supported by the same CAT dealer network, so parts, mechanics and service quality are identical. That makes this a clean choice: you are only weighing capability against cost, not worrying about who will fix the machine.

    Ans.

    Yes. CAT holds strong demand in the Indian used market at this size, so buyers are usually available and prices hold up. What moves your price most is hours on the meter, undercarriage condition and a filled service book, not which of these two models you own.

    Ans.

    Correct track tension and daily mud cleaning, more than anything else. A track run too tight or packed with mud wears the chain, rollers and idlers fast, and this is the biggest single bill on any 20 ton machine after a few thousand hours of work.

    CAT 321 Vs CAT 323D3 - Compare Price & Availability Across 600+ Locations in India

    Compare CAT 321 Vs CAT 323D3 price and availability across all major cities in India including Mumbai, Pune, Kolkata, Hyderabad, Chennai, Bengaluru, Delhi, Ahmedabad, Indore, Jaipur, Guwahati, and 600+ more locations.

    Maharashtra
    26 cities

    • Mumbai

    • Pune

    • Nagpur

    • Navi Mumbai

    • Thane

    • Nashik

    • Aurangabad (Chhatrapati Sambhajinagar)

    • Solapur

    • Kolhapur

    • Amravati

    • Chandrapur

    • Yavatmal

    • Latur

    • Dhule

    • Ahmednagar

    • Jalgaon

    • Raigad

    • Beed

    • Wardha

    • Palghar

    • Sangli

    • Ratnagiri

    • Satara

    • Nanded

    • Akola

    • Buldhana

    Gujarat
    21 cities

    • Ahmedabad

    • Gandhinagar

    • Surat

    • Vadodara

    • Rajkot

    • Bhavnagar

    • Jamnagar

    • Mundra

    • Kutch

    • Vapi

    • Anand

    • Mehsana

    • Morbi

    • Surendranagar

    • Amreli

    • Bharuch

    • Navsari

    • Dahej

    • Alang

    • Dholera

    • Gandhidham

    Goa
    5 cities

    • Panaji

    • Vasco da Gama

    • Margao

    • Calangute

    • Mormugao

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