Caterpillar 309 CR Mini Excavator Specs & Buying Research

At a glance

Key specifications

Operating Weight21,091 lb9,565 kgCaterpillar 309 CR — Weights. *Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket. **Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.Manufacturer verified

Dig Depth13 ft 5.7 in4,108 mmCaterpillar 309 CR — Dimensions - Standard Stick. *Boom Height when stick is pinned in transport position with no attachments. ***With blade positioned at the rear of the machine. **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.Manufacturer verified

Maximum Reach - Ground Level22 ft 9.6 in6,949 mmCaterpillar 309 CR — Dimensions - Standard Stick. *Boom Height when stick is pinned in transport position with no attachments. ***With blade positioned at the rear of the machine. **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.Manufacturer verified

Net Power69.5 hp51.8 kWCaterpillar 309 CR — Engine. Published reference configuration; fitted options can vary.Manufacturer verified

Overall dimensions

Overall Shipping Length - with Counterweight22 ft 2.7 in6,774 mmManufacturer verified

O/A Track Width8 ft 1.2 in2,470 mmManufacturer verified

Cab Height8 ft 4 in2,541 mmManufacturer verified

Measurement basis: Caterpillar 309 CR — Dimensions - Standard Stick. *Boom Height when stick is pinned in transport position with no attachments. ***With blade positioned at the rear of the machine. **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.

Precision visual reference

Dimensions and working range

Published measurements for the stated configuration. Illustration not to scale.

Reviewed visual

Caterpillar 309 CR Mini Excavator, illustrative side and front reference views; not a scale drawing. — Machine reference views

Overall Size

AOverall Shipping Length - with Counterweight22 ft 2.7 in6,774 mmManufacturer verified

BO/A Track Width8 ft 1.2 in2,470 mmManufacturer verified

CCab Height8 ft 4 in2,541 mmManufacturer verified

Working Range

Dig Depth13 ft 5.7 in4,108 mmManufacturer verified

Maximum Reach - Ground Level22 ft 9.6 in6,949 mmManufacturer verified

Maximum Dig Height22 ft 1.2 in6,736 mmManufacturer verified

Maximum Dump Clearance15 ft 7.4 in4,760 mmManufacturer verified

Tail Swing with Counterweight5 ft 2.4 in1,585 mmManufacturer verified

Reference details

Overall measurement views reviewed 2026-09-06. Illustrative artwork, not a scale drawing.

Documented model generation; confirm serial/PIN and installed configuration · United States / North American reference

Canonical reference: heavyeq.ca/specs/mini-excavators/caterpillar/309-cr/ · Printed from HeavyEQ.ca. Confirm the actual machine and current manufacturer documentation before transport or operation.

Year, generation & configuration

Model generation and configuration

Generation / series: Current 309 CR manufacturer record
Applicable region: United States / North American reference
Year handling: Confirm the serial/PIN and production year when matching an individual machine to this reference.

Model identity

Model family, generation & status

Model family: Caterpillar 309 CR
Generation / record: Current 309 CR manufacturer record
Product status: Current manufacturer model — status checked September 2026
Regional scope: United States / North American reference

No verified lineage relationship published. HeavyEQ reviewed first-party sources and did not force a predecessor or successor from model numbering.

United States / North American reference

Verified specifications

Values retain their cited source, verification status and original publication basis. Imperial is presented first while manufacturer-published dual units and configuration context remain attached to every value.

Qualified specifications with value-level verification status
Specification	Imperial	Metric	Standard / configuration	Source
Net Power	69.5 hp	51.8 kW	Caterpillar 309 CR — Engine. Published reference configuration; fitted options can vary.Manufacturer verified	Caterpillar
Gross Power - SAE J1995:2014	74.3 hp	55.4 kW	Caterpillar 309 CR — Engine. Published reference configuration; fitted options can vary.Manufacturer verified	Caterpillar
Operating Weight	21,091 lb	9,565 kg	Caterpillar 309 CR — Weights. Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket. *Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.Manufacturer verifiedSafety-sensitive value — verify the exact machine.	Caterpillar
Overall Shipping Length - with Counterweight	22 ft 2.7 in	6,774 mm	Caterpillar 309 CR — Dimensions - Standard Stick. Boom Height when stick is pinned in transport position with no attachments. With blade positioned at the rear of the machine. Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.Manufacturer verifiedSafety-sensitive value — verify the exact machine.	Caterpillar
O/A Track Width	8 ft 1.2 in	2,470 mm	Caterpillar 309 CR — Dimensions - Standard Stick. Boom Height when stick is pinned in transport position with no attachments. With blade positioned at the rear of the machine. Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.Manufacturer verifiedSafety-sensitive value — verify the exact machine.	Caterpillar
Cab Height	8 ft 4 in	2,541 mm	Caterpillar 309 CR — Dimensions - Standard Stick. Boom Height when stick is pinned in transport position with no attachments. With blade positioned at the rear of the machine. Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.Manufacturer verifiedSafety-sensitive value — verify the exact machine.	Caterpillar
Dig Depth	13 ft 5.7 in	4,108 mm	Caterpillar 309 CR — Dimensions - Standard Stick. Boom Height when stick is pinned in transport position with no attachments. With blade positioned at the rear of the machine. Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.Manufacturer verified	Caterpillar
Maximum Reach - Ground Level	22 ft 9.6 in	6,949 mm	Caterpillar 309 CR — Dimensions - Standard Stick. Boom Height when stick is pinned in transport position with no attachments. With blade positioned at the rear of the machine. Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.Manufacturer verified	Caterpillar
Maximum Dig Height	22 ft 1.2 in	6,736 mm	Caterpillar 309 CR — Dimensions - Standard Stick. Boom Height when stick is pinned in transport position with no attachments. With blade positioned at the rear of the machine. Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.Manufacturer verified	Caterpillar
Maximum Dump Clearance	15 ft 7.4 in	4,760 mm	Caterpillar 309 CR — Dimensions - Standard Stick. Boom Height when stick is pinned in transport position with no attachments. With blade positioned at the rear of the machine. Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.Manufacturer verified	Caterpillar
Tail Swing with Counterweight	5 ft 2.4 in	1,585 mm	Caterpillar 309 CR — Dimensions - Standard Stick. Boom Height when stick is pinned in transport position with no attachments. With blade positioned at the rear of the machine. Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.Manufacturer verifiedSafety-sensitive value — verify the exact machine.	Caterpillar
Ground Clearance	1 ft 2 in	356 mm	Caterpillar 309 CR — Dimensions - Standard Stick. Boom Height when stick is pinned in transport position with no attachments. With blade positioned at the rear of the machine. Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.Manufacturer verifiedSafety-sensitive value — verify the exact machine.	Caterpillar
Track Belt/Shoe Width	1 ft 5.7 in	450 mm	Caterpillar 309 CR — Dimensions - Standard Stick. Boom Height when stick is pinned in transport position with no attachments. With blade positioned at the rear of the machine. Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.Manufacturer verifiedSafety-sensitive value — verify the exact machine.	Caterpillar

What the specifications mean

The published 309 CR values remain attached to their stated configuration and rating basis.

Caterpillar 309 CR — Dimensions - Standard Stick. *Boom Height when stick is pinned in transport position with no attachments. ***With blade positioned at the rear of the machine. **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.

An individual machine must be verified by serial/PIN, installed equipment and actual measurements.

Configuration intelligence

Configurations & specification differences

These observations are scoped to the cited generation and region. They are not a list of valid option combinations.

Material configurations in this research record
Record	Verified observation	Scope
Cab / canopy & counterweight	Caterpillar 309 CR — Dimensions - Standard Stick. Boom Height when stick is pinned in transport position with no attachments. With blade positioned at the rear of the machine. Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.	Current 309 CR manufacturer recordUnited States / North American reference

A brochure configuration is not an individual marketplace machine. Serial/PIN and build information are required for exact verification.

Used 309 CR inspection priorities

Inspect tracks, sprockets, rollers, idlers, final drives and travel response.
Measure boom, arm, bucket, swing-post and blade pin wear.
Operate the coupler and auxiliary circuits with the intended tool when practical.
Match the 309 CR model plate, fitted attachment and undercarriage to the cited reference configuration.

Configuration-aware inspection: these checks are triggered by machine category, installed configuration and technology package. Brochure-listed technology must be physically present, active, licensed and calibrated on the used machine.

Hours, condition and ownership cost

Hours are context, not a condition grade. Duty cycle, idle time, maintenance evidence, wear-system measurements, structural repairs and installed technology should be evaluated together.

Cost drivers to model

Track wear, compact service access and attachment duty drive hourly cost.
Blade, coupler and auxiliary packages materially affect fit and value.
Trailer, tow vehicle and attachment mobilization belong in the cost model.

Compatibility graph

Attachment considerations

Relationships below identify relevant classes only unless a stronger evidence state is shown. They never assert exact used-attachment fitment.

relevant attachment class

Compact excavator buckets and couplers

Verify pin or coupler geometry, tool weight, machine configuration.

Open attachment research

relevant attachment class

Breakers, augers and compactors

Verify flow, pressure, return, case drain, controls.

Open attachment research

Before confirming fitment

generation and machine configuration
mounting interface, coupler or pin geometry
hydraulic flow, pressure, return and case drain
attachment weight and machine capacity limits
electrical controls or required machine options

Model-reference transport profile

Transport reference

Reference measurements retain their configuration and verification status. Confirm the actual transport setup before booking.

Manufacturer verifiedOperating Weight21,091 lb9,565 kgCaterpillar 309 CR — Weights. *Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket. **Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.

Manufacturer verifiedOverall Shipping Length - with Counterweight22 ft 2.7 in6,774 mmCaterpillar 309 CR — Dimensions - Standard Stick. *Boom Height when stick is pinned in transport position with no attachments. ***With blade positioned at the rear of the machine. **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.

Manufacturer verifiedO/A Track Width8 ft 1.2 in2,470 mmCaterpillar 309 CR — Dimensions - Standard Stick. *Boom Height when stick is pinned in transport position with no attachments. ***With blade positioned at the rear of the machine. **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.

Manufacturer verifiedCab Height8 ft 4 in2,541 mmCaterpillar 309 CR — Dimensions - Standard Stick. *Boom Height when stick is pinned in transport position with no attachments. ***With blade positioned at the rear of the machine. **Boom Height when stick is pinned in working position with attachments Standard Stick offers only one pin position.

Reference specifications can differ from the actual configured machine. Confirm dimensions and weight before booking transportation.

Confirm or replace before a transport request

actual weight
actual travel length, width and height
attachments and removable work tools
bucket, blade, carriage or boom position
loading condition

Source provenance

First-party sources and verification notes

Only manufacturer-authored records are linked publicly. Provisional measurements remain marked until a matching first-party record is confirmed.

Caterpillar

309 CR Mini Excavator | Cat | Caterpillar

United States / North American reference · exact model technical page · accessed September 6, 2026 · status: Manufacturer verified

Open source