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Mini Excavators

309 CR

The Cat® 309 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.The 309 CR also features high flow hydraulics to handle power hungry attachments such as mulchers and brushcutters.

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Net Power

51.8kW

Operating Weight

9565kg

Displacement

3.33l

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Overview

The Cat® 309 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.

Resources

309 CR Product Brochure

309 CR Standard Undercarriage Product Brochure

Cat Mini Hydraulic Excavators Product Line Brochure (North America)

Cat Mini Hydraulic Excavators Product Line Brochure (Europe)

Options And Accessories Kit Guide for Mini Hydraulic Excavators

Cat Attachments for Mini Excavators Brochure

Attachment Compatibility Guide for Mini Excavators

Specifications

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Net Power51.8kW
Displacement3.33l
Bore94mm
Stroke120mm
Gross Power - SAE J199555.4kW
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/126951.8kW

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Attachments

COMPATIBLE WITH

8 Ton Mini Excavators Tilting Dual Lock Pin Grabber

Cat® Tilting Dual Lock Pin Grabber Couplers - Mini Excavator allow work tools to be changed quickly - improving overall production and increasing machine versatility. The Tilting Dual Lock Coupler maintains a tight fit with an innovative wedge design throughout the life of the coupler. It can be used with compatible pin-on work tools and in front shovel mode with buckets. The Tilting Dual Lock Coupler also comes with a visible locking mechanism for added security.

400 mm (16 in)

Nordic Trenching Buckets for Cat® Mini Excavators are ideal for trenching applications, but can be used for general excavation and backfilling in a variety of soil types. Durable side wear plates provide optimal wear resistance in heavy duty applications. Due to the longer bucket floor length, shorter tip radius and flat torque tube construction they are an ideal match when combined with an S Type Coupler or Tilt Rotate System.

400 mm (16 in)

Nordic Trenching Buckets for Cat® Mini Excavators are ideal for trenching applications, but can be used for general excavation and backfilling in a variety of soil types. Durable side wear plates provide optimal wear resistance in heavy duty applications. Due to the longer bucket floor length, shorter tip radius and flat torque tube construction they are an ideal match when combined with an S Type Coupler or Tilt Rotate System.

1300 mm (51 in)

Nordic Grading Buckets for Cat® Mini Excavators are ideal for grading applications, but also suitable for general excavation, loading, and backfilling in all kinds of different soil types. The design features durable wear plates for longer wear resistance in heavy duty applications. Due to the rounded side shape, shorter tip radius, and flat torque tube construction they are optimal for using in combination with a Tilt Rotate System.

1300 mm (51 in)

Nordic Grading Buckets for Cat® Mini Excavators are ideal for grading applications, but also suitable for general excavation, loading, and backfilling in all kinds of different soil types. The design features durable wear plates for longer wear resistance in heavy duty applications. Due to the rounded side shape, shorter tip radius, and flat torque tube construction they are optimal for using in combination with a Tilt Rotate System.

1300 mm (51 in)

Nordic Grading Buckets for Cat® Mini Excavators are ideal for grading applications, but also suitable for general excavation, loading, and backfilling in all kinds of different soil types. The design features durable wear plates for longer wear resistance in heavy duty applications. Due to the rounded side shape, shorter tip radius, and flat torque tube construction they are optimal for using in combination with a Tilt Rotate System.

305 mm (12 in) 7-8 Ton, Pin On

Cat® Compaction Wheels for Backhoe Loaders and Mini Excavators provide a low cost option for trench compaction. The wheels feature tapered roller bearings and tampered foot design with static pad rollers, to allow for smooth operation and achieving a high level of compaction. Six to ten passes are usually adequate to achieve compaction in normal soil conditions, dependent on the required compaction levels.

457 mm (18 in) 7-8 Ton, Pin On

Cat® Compaction Wheels for Backhoe Loaders and Mini Excavators provide a low cost option for trench compaction. The wheels feature tapered roller bearings and tampered foot design with static pad rollers, to allow for smooth operation and achieving a high level of compaction. Six to ten passes are usually adequate to achieve compaction in normal soil conditions, dependent on the required compaction levels.

610 mm (24 in) 7-8 Ton, Pin On

Cat® Compaction Wheels for Backhoe Loaders and Mini Excavators provide a low cost option for trench compaction. The wheels feature tapered roller bearings and tampered foot design with static pad rollers, to allow for smooth operation and achieving a high level of compaction. Six to ten passes are usually adequate to achieve compaction in normal soil conditions, dependent on the required compaction levels.

914 mm (36 in) 7-8 Ton, Pin On

Cat® Compaction Wheels for Backhoe Loaders and Mini Excavators provide a low cost option for trench compaction. The wheels feature tapered roller bearings and tampered foot design with static pad rollers, to allow for smooth operation and achieving a high level of compaction. Six to ten passes are usually adequate to achieve compaction in normal soil conditions, dependent on the required compaction levels.

PC35

Cat® Cold Planers are designed for small paving jobs in residential and commercial applications and are primarily used to economically restore asphalt and concrete surfaces. They are ideal for milling imperfections prior to resurfacing, removing deteriorated pavement, removing traffic lane stripes and jobs where the use of dedicated planers is limited. The Cat Cold Planers are designed for use on Cat Skid Steer Loaders, Compact Track Loaders, Compact Wheel Loaders and Backhoe Loaders.

PC45

Cat® Cold Planers are designed for small paving jobs in residential and commercial applications and are primarily used to economically restore asphalt and concrete surfaces. They are ideal for milling imperfections prior to resurfacing, removing deteriorated pavement, removing traffic lane stripes and jobs where the use of dedicated planers is limited. The Cat Cold Planers are designed for use on Cat Skid Steer Loaders, Compact Track Loaders, Compact Wheel Loaders and Backhoe Loaders.

HM208

Cat® Mulchers for Skid Steer Loaders and Compact Track Loaders are designed for high-performance cutting and mulching vegetation and undergrowth from forested terrain. The hydraulic mulcher reduces saplings, shrubs and trees into mulched material, making it ideal for environmental maintenance, such as creating fire lanes. Other applications include land reclamation, foliage removal from building construction sites, and shredding pruned material and organic waste for biomass production.

HM210

Cat® Mulchers for Skid Steer Loaders and Compact Track Loaders are designed for high-performance cutting and mulching vegetation and undergrowth from forested terrain. The hydraulic mulcher reduces saplings, shrubs and trees into mulched material, making it ideal for environmental maintenance, such as creating fire lanes. Other applications include land reclamation, foliage removal from building construction sites, and shredding pruned material and organic waste for biomass production.

S-45 Pin Grabber LCS 7-9 Ton

Cat® S Type Couplers for Mini Excavators are an optimal design for a dedicated quick coupler solution. Low offset, pin grabber ability, and a wedge type locking system ensures a tight fit, no attachment play during use. It also creates the solution to exchange work tools among different platforms and brands. In combination with the Tilt Rotate System that can be equipped with an S Type Coupler and the variety of different buckets offered, it provides a complete attachment solution for Mini Excavators. The coupler is designed with the highest safety standards and comes with a visible locking mechanism.

861 mm (34 in)

Cat® Excavator Rippers offer a cost-effective alternative to blasting. In quarry production work, they offer a lower cost per ton, better product quality and less environmental impact than explosive excavation. They are the ideal tool for land clearing or site preparation in rock, quarry work and similar high-impact digging applications. Take productivity to the next level with a Cat Rip & Load package. A quick coupler switches you rapidly between the ripper, and an Extreme Duty Rock bucket. Pull the rock from the ground and load it with the same machine.

Undercarriage Track

Support

POWER ON THE GROUND

Customer Service

Our dedicated Customer Service Centre provides expert support and remote technical assistance. Field service is available 24 hours a day, 7 days a week, to ensure we can keep you moving (additional charges may apply after-hours).

Equipment Servicing

Caterpillar has always been known for the unrivalled quality of its machines, but less known is that they are built to be rebuilt. Get the most out of your machine with Cat dealer service.

Service Agreements

Condition monitoring, equipment protection and preventative maintenance ensures the right level of support for you and your business.

Customer Service

Our dedicated Customer Service Centre provides expert support and remote technical assistance. Field service is available 24 hours a day, 7 days a week, to ensure we can keep you moving (additional charges may apply after-hours).

Equipment Servicing

Caterpillar has always been known for the unrivalled quality of its machines, but less known is that they are built to be rebuilt. Get the most out of your machine with Cat dealer service.

Service Agreements

Condition monitoring, equipment protection and preventative maintenance ensures the right level of support for you and your business.

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