Attachments for the Caterpillar 309 CR VAB weight range
- Bucket line
- DB - heavy duty digging bucket400–1200 mm wide
- We usually reply within 1 working day
- We check the fit before we send the quote
- Every offer names the dispatch week
- If a bracket we made is wrong and does not fit your machine, we replace it.
Catalogue sizes for the 309 CR VAB
Each size below has a catalogue row rated for a carrier of 10,020 kg operating weight. Tell us which sizes you want and we reply with an offer.
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Welded to EN ISO 3834-2. Agree it as a standing term of supply and the EN 10204 3.1 certificate ships with every attachment. You also get the CE declaration of conformity for every product that carries the CE mark.
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Sizes are matched to the published operating weight of the 309 CR VAB.
- Weight Class
- Midi Excavator (6–12 t)
- Operating Weight
- 10,020 kg
- Family-owned group, founded in 1996
- More than 50,000 attachments delivered
- Built in our own factory in Poland
Operating weight as published by Caterpillar, retrieved 2026-09-13. Source
Start here
The attachments buyers in your market ask for first, sized for the 309 CR VAB.
Which coupler is on your machine?
Pick the system on your machine and we put it in your enquiry. We check the bracket before we send the quote.
How to measure your coupler
Not sure which system it is? Three measurements tell us which bracket you need.
- Measure the diameter of both pins.
- Measure the distance between the pin centres.
- Measure the width between the inside faces of the ears.
If the coupler has a make or type printed on it, send that too.
Send me the spec sheet for my machine
Pick a bucket line and we email you its spec sheet, with the sizes we build for the 309 CR VAB.
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Caterpillar 309 CR VAB: DBF - flat-top digging bucket for quick coupler (DBF-120)
309 CR VAB at a glance
| Figure | Value | Source |
|---|---|---|
| Max dig depth | 3,815 mm | maker's document (s7d2.scene7.com) |
| Max reach | 7,715 mm | maker's document (s7d2.scene7.com) |
| Max dump height | 6,285 mm | maker's document (s7d2.scene7.com) |
| Arm length | 1,820 mm | maker's document (s7d2.scene7.com) |
| Main pump flow | 233 l/min | maker's document (s7d2.scene7.com) |
| Auxiliary flow | 140 l/min | maker's document (s7d2.scene7.com) |
| Auxiliary pressure | 285 bar | maker's document (s7d2.scene7.com) |
| Lift capacity | 5,637 kg | maker's document (s7d2.scene7.com) |
| Quick coupler | Hydraulic Coupler | maker's document (s7d2.scene7.com) |
| Transport width | 2,470 mm | maker's document (s7d2.scene7.com) |
Only figures the maker publishes for this model. Where a figure is missing, no value is shown.
What the 309 CR VAB figures mean for its attachments
- Its auxiliary circuit is rated at 140 l/min and 285 bar. A breaker, auger, tilt rotator or other hydraulic tool states the oil flow it needs, so choose one whose range includes this figure.
- The main pump delivers up to 233 l/min at 285 bar. That is the pump output of the whole machine, not the flow an attachment gets.
- Caterpillar lists this quick coupler for it: Hydraulic Coupler. The bracket on every attachment has to match the coupler.
- It digs down to 3,815 mm. That is the deepest trench it can open.
- Its maximum reach is 7,715 mm.
- It dumps at up to 6,285 mm, so a truck or skip side has to sit below that height.
- Its arm is 1,820 mm long.
- Caterpillar gives a lifting capacity of 5,637 kg. Check a heavy grab or hammer, plus its load, against the full load chart.
- For transport it measures 6,495 x 2,470 x 2,541 mm (length, width, height).
Figures as published by Caterpillar in its own documents.
How the 309 CR VAB compares with its neighbours
The nearest models by weight, with the difference to the 309 CR VAB in parentheses where both makers publish the figure.
| Model | Operating weight | Max dig depth | Main pump flow | Auxiliary flow |
|---|---|---|---|---|
| 309 CR VAB | 10.02 t | 3,815 mm | 233 l/min | 140 l/min |
| Caterpillar 309 CR VAB (Long Undercarriage) | 9.74 t (-0.28 t) | 3,815 mm | 233 l/min | 140 l/min |
| Caterpillar 310 - Tier 4 / Stage V | 10.43 t (+0.41 t) | 5,211 mm (+1,396) | 233 l/min | 131 l/min (-9) |
| Mecalac 11MWR | 10 t (-0.02 t) | 3,800 mm (-15) | 165 l/min (-68) | 120 l/min (-20) |
Figures as each maker publishes them. A difference is shown only where both machines have a published value.
309 CR VAB: what the brochure names
Features Caterpillar names in its own brochure for the 309 CR VAB. Some of them may be optional, so check the machine's spec before you order.
- A dozer blade.
- A load-sensing hydraulic system.
- An engine that meets EU Stage V.
- Operator protection certified to ROPS and FOPS.
From Caterpillar's published brochure. We keep the source document on file.
Questions about the 309 CR VAB
- Which quick coupler is installed on your 309 CR VAB?
- Caterpillar lists this coupler for it: Hydraulic Coupler. Order attachments with the matching bracket.
- Can the 309 CR VAB run a hydraulic attachment?
- Yes, if the tool's rated range covers the auxiliary circuit: 140 l/min at 285 bar.
Each family shows its candidate models by operating-weight range.
Digging & sorting buckets
- DB - heavy duty digging bucket
DB-120 · 6 width variants
- SDB - heavy duty skeleton DB bucket
SDB-120 · 2 width variants
- DBF - flat-top digging bucket for quick coupler
DBF-120 · 6 width variants
- RDBF - flat-top skeleton DBF bucket on rods
RDBF-120 · 2 width variants
Ditching, grading, sloping buckets
- GDH - heavy duty hydraulic grading & ditching bucket
GDH-120 · 4 width variants
- DCB - grading & ditching bucket with round profile
DCB-120 · 4 width variants
Nordic mini-ex buckets set No. 4
- PS mini - Scandinavian universal grading bucket for mini-excavator
PS-120 · 5 width variants
- PSH mini - hydraulic swivelling grading bucket for mini-excavators
PS-120 · 5 width variants
Non-bucket attachments
- TH - hydraulic thumb for excavator
TH-16
- DuoRIP - double ripper for root extraction
Duo-Ripper-12
- GRB - excavator grading beam
GRB midi · 6 variants, GRB maxi · 6 variants
- QC-S - S-System Scandinavian quick-coupler
QC-S45-H, QC-S50, QC-S45-SA, QC-U-S45-H, QC-U-S50
- CW - CW-System compatible quick-coupler
CW-10, CW-20, CW-20 S, CW-U-10, CW-U-20, CW-U-20 S
- QC-HS / QC-MS - MS-System compatible quick-coupler
QC-HS-08, QC-HS-10, QC-MS-08, QC-MS-10, QC-U-HS-08, QC-U-HS-10
- QC-PG - pin-grabber quick-coupler for factory brackets
QC-PG-60, QC-ML-M-50, QC-ML-M-55, QC-U-PG-60
Bucket sets for this machine
Sets of one bucket profile that include buckets listed for the Caterpillar 309 CR VAB. Each set lists the buckets that match the machine's operating weight.
- Nordic-profile set
Buckets in the set for this weight: PS, PSH
Before you order: check the interface
The weight class of the Caterpillar 309 CR VAB sizes the attachment. It does not tell you the pin diameter, the pin spacing or the stick width, and those decide whether an attachment fits. Measure them on the machine, or send us the measurements of the bucket it runs today.
A midi excavator is often the main machine on a site, trenching, loading and grading in the same day. Buyers usually start with a general purpose bucket, a grading bucket and a quick coupler, then add other tools when the work calls for them.
Quick coupler brackets at this weight
In our model tables, the attachments listed for the Caterpillar 309 CR VAB at its weight are built with these brackets. Each code opens the models that list it.
- Measure the diameter of both bucket pins.
- Measure the distance between the pin centres.
- Measure the inside width between the stick ears.
- If the machine runs a quick coupler, note its make and type.
What these terms mean:
How to choose an attachment for the job:
Other makes of a similar weight
Operating weight within 2 t of the Caterpillar 309 CR VAB.
Other Caterpillar models with the same coupler brackets
Our model tables give these machines the same quick coupler brackets.
Why buy from the factory
- Cutting, machining, welding and painting on one site, our own factory in Poland, EU
- More than 50,000 attachments delivered since 2008
- A record for every serial number, so the spare parts match your attachment
Need Custom Specifications?
We can manufacture attachments to your exact pin spacing and requirements for Caterpillar 309 CR VAB.
Welded to EN ISO 3834-2. Agree it as a standing term of supply and the EN 10204 3.1 certificate ships with every attachment. You also get the CE declaration of conformity for every product that carries the CE mark.
Do you sell Caterpillar machines? Machine dealer supply
Machine makes and model names belong to their owners. Sieruta is not affiliated with them. We use the names only to show which machines we offer attachments for, by operating weight.