Operating-weight guide

Attachments for the Caterpillar 301.8 weight range

Bucket line: GP - general purpose digging bucket300–600 mm wide

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Catalogue sizes for the 301.8

Each size below has a catalogue row rated for a carrier of 2,030 kg operating weight. Tell us which sizes you want and we reply with an offer.

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Attachment	Sizes	Capacity [dm³]	Width [mm]	Weight [kg]
GP - general purpose digging bucket	GP-30 · 4 width variants	36–88 SAE	300–600	33–55
GB - rigid grading & ditching bucket, German profile	GB-30 · 2 width variants	93–114 SAE	1,000–1,200	70–82
GBH - hydraulic tilt ditching bucket for mini-excavator	GBH-30 · 2 width variants	93–114 SAE	1,000–1,200	101–113
RGP - skeleton rod GP bucket	RGP-30 · 2 width variants	87–123 SAE	600–800	58–73
SGP - heavy duty skeleton GP bucket	SGP-30 · 2 width variants	64–81 SAE	600–800	64–80
GPO - GP bucket with perforated bottom	GPO-30 · 2 width variants	64–81 SAE	600–800	52–64
GPL - general purpose digging bucket	GPL-30 · 4 width variants	33–79 SAE	300–600	26–43
GBP - rigid grading & ditching bucket, Italian profile	GBP-30 · 2 width variants	129–158 SAE	1,000–1,200	72–85
GBPH - hydraulic tilting grading & ditching bucket	GBPH-30 · 3 width variants	88–121 SAE	900–1,200	88–103
RGPL - skeleton rod GPL bucket	RGPL-30 · 2 width variants	79–110 SAE	600–800	44–55
GPLO - GPL bucket with perforated bottom	GPLO-30 · 2 width variants	79–110 SAE	600–800	43–55
SGPL - heavy duty skeleton GPL bucket for mini-excavator	SGPL-30 · 2 width variants	79–110 SAE	600–800	48–62
BDP mini - clay digging bucket for mini-excavator	BDP-30	16 SAE	250	30
SB mini - Dutch profile grading & ditching bucket for mini-excavator	SB-30 · 4 width variants	97–131 SAE	900–1,200	65–85
PDP mini - skeleton BDP stone bucket	PDP-30 · 3 width variants	93–130 SAE	600–800	53–66
DS mini - Scandinavian deep digging bucket for mini-excavator	DS-30 · 3 width variants	66–114 SAE	400–600	44–60
PS mini - Scandinavian universal grading bucket for mini-excavator	PS-25 · 3 width variants	112–140 SAE	1,000–1,200	64–77
PSH mini - hydraulic swivelling grading bucket for mini-excavators	PS-25 · 3 width variants		1,000–1,200
KS mini - cable bucket for mini-excavator	KS-20 · 3 width variants	19–50 SAE	200–400	20–34
KSV mini - Scandinavian profile cable V bucket for mini-excavator	KSV-20 · 3 width variants	17–57 SAE	100–300	23–40
CB mini - hydraulic clamp bucket for mini-excavator	CBR-30	83 SAE	600	80
GKB mini - deep cable digging bucket for mini-excavator	GKB-30		150	37
RGPR - skeleton rod bucket	RGPR-30	109 SAE	800	63
RGB - skeleton rod grading & sorting bucket	RGB-30	118 SAE	1,200	77
LR mini - straight land rakes for mini-excavator	LR-3 · 2 width variants		1,000–1,200	85–100
LRS - short land rakes for mini-excavators	LRS-3		925	70
RIP mini - ripper shank for mini-excavator	Ripper-2.5			21
MR mini - multi-ripper for mini-excavator	MRF 25		400	36
AC mini - asphalt cutter for mini-excavator	AC-6			43
GRB light - mini-excavator grading beam with lowered mass	GRB-MIKRO · 3 width variants, GRBH-MIKRO · 3 width variants		1,500–2,000	86–141
RC - root cutter	Root cutter-2		170	13
RRB - root rake bucket profile	RRB-40		1,200	148
QC-S - S-System Scandinavian quick-coupler	QC-S40-H, QC-S40-H/240, QC-S40-SA, QC-S40-SA/240, QC-U-S40-H, QC-U-S40-H/240			30–92
CW - CW-System compatible quick-coupler	CW-05, CW-U-05			25–67
QC-HS / QC-MS - MS-System compatible quick-coupler	QC-HS-03, QC-MS-03, QC-U-HS-03			30–90
QC-PG - pin-grabber quick-coupler for factory brackets	QC-ML-M-35			22

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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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Cite this table as https://sieruta.com/en/fit/caterpillar/caterpillar-301-8, figures as of 2026-09-13.

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<table>
<caption>Families that fit the Caterpillar 301.8, with their own figures</caption>
<thead><tr><th scope="col">Attachment</th><th scope="col">Sizes</th><th scope="col">Capacity [dm³]</th><th scope="col">Width [mm]</th><th scope="col">Weight [kg]</th></tr></thead>
<tbody>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-digging/gp-general-purpose-digging-bucket">GP - general purpose digging bucket</a></td><td>GP-30 · 4 width variants</td><td>36–88 SAE</td><td>300–600</td><td>33–55</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-grading/gb-rigid-grading-ditching-bucket">GB - rigid grading &amp; ditching bucket, German profile</a></td><td>GB-30 · 2 width variants</td><td>93–114 SAE</td><td>1,000–1,200</td><td>70–82</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-grading/gbh-universal-hydraulic-tilting-ditching-bucket-for-mini-excavator">GBH - hydraulic tilt ditching bucket for mini-excavator</a></td><td>GBH-30 · 2 width variants</td><td>93–114 SAE</td><td>1,000–1,200</td><td>101–113</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-skeleton/rgp-skeleton-rod-gp-bucket">RGP - skeleton rod GP bucket</a></td><td>RGP-30 · 2 width variants</td><td>87–123 SAE</td><td>600–800</td><td>58–73</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-skeleton/sgp-heavy-duty-mini-excavator-skeleton-gp-bucket">SGP - heavy duty skeleton GP bucket</a></td><td>SGP-30 · 2 width variants</td><td>64–81 SAE</td><td>600–800</td><td>64–80</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-skeleton/gpo-gp-bucket-with-perforated-bottom">GPO - GP bucket with perforated bottom</a></td><td>GPO-30 · 2 width variants</td><td>64–81 SAE</td><td>600–800</td><td>52–64</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-digging/gpl-general-purpose-digging-bucket">GPL - general purpose digging bucket</a></td><td>GPL-30 · 4 width variants</td><td>33–79 SAE</td><td>300–600</td><td>26–43</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-grading/gbp-rigid-grading-ditching-bucket">GBP - rigid grading &amp; ditching bucket, Italian profile</a></td><td>GBP-30 · 2 width variants</td><td>129–158 SAE</td><td>1,000–1,200</td><td>72–85</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-grading/gbph-hydraulic-tilting-grading-ditching-bucket">GBPH - hydraulic tilting grading &amp; ditching bucket</a></td><td>GBPH-30 · 3 width variants</td><td>88–121 SAE</td><td>900–1,200</td><td>88–103</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-skeleton/rgpl-skeleton-rod-gpl-bucket">RGPL - skeleton rod GPL bucket</a></td><td>RGPL-30 · 2 width variants</td><td>79–110 SAE</td><td>600–800</td><td>44–55</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-skeleton/gplo-gpl-bucket-with-perforated-bottom">GPLO - GPL bucket with perforated bottom</a></td><td>GPLO-30 · 2 width variants</td><td>79–110 SAE</td><td>600–800</td><td>43–55</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-skeleton/sgpl-heavy-duty-skeleton-gpl-bucket">SGPL - heavy duty skeleton GPL bucket for mini-excavator</a></td><td>SGPL-30 · 2 width variants</td><td>79–110 SAE</td><td>600–800</td><td>48–62</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-digging/bdp-clay-bucket-for-mini-excavator">BDP mini - clay digging bucket for mini-excavator</a></td><td>BDP-30</td><td>16 SAE</td><td>250</td><td>30</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-grading/sb-dutch-profile-ditch-cleaning-bucket">SB mini - Dutch profile grading &amp; ditching bucket for mini-excavator</a></td><td>SB-30 · 4 width variants</td><td>97–131 SAE</td><td>900–1,200</td><td>65–85</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-skeleton/pdp-dutch-profile-skeleton-stone-bucket">PDP mini - skeleton BDP stone bucket</a></td><td>PDP-30 · 3 width variants</td><td>93–130 SAE</td><td>600–800</td><td>53–66</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-digging/ds-scandinavian-deep-excavation-bucket-djupskopa">DS mini - Scandinavian deep digging bucket for mini-excavator</a></td><td>DS-30 · 3 width variants</td><td>66–114 SAE</td><td>400–600</td><td>44–60</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-grading/ps-mini-scandinavian-universal-grading-bucket-for-mini-excavator">PS mini - Scandinavian universal grading bucket for mini-excavator</a></td><td>PS-25 · 3 width variants</td><td>112–140 SAE</td><td>1,000–1,200</td><td>64–77</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-grading/psh-mini-hydraulic-swivelling-grading-bucket-for-mini-excavator">PSH mini - hydraulic swivelling grading bucket for mini-excavators</a></td><td>PS-25 · 3 width variants</td><td></td><td>1,000–1,200</td><td></td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-digging/ks-mini-cable-bucket-for-mini-excavator">KS mini - cable bucket for mini-excavator</a></td><td>KS-20 · 3 width variants</td><td>19–50 SAE</td><td>200–400</td><td>20–34</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-digging/ksv-mini-scandinavian-profile-cable-v-bucket-for-mini-excavator">KSV mini - Scandinavian profile cable V bucket for mini-excavator</a></td><td>KSV-20 · 3 width variants</td><td>17–57 SAE</td><td>100–300</td><td>23–40</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-digging/cb-hydraulic-clamp-bucket-for-mini-excavator">CB mini - hydraulic clamp bucket for mini-excavator</a></td><td>CBR-30</td><td>83 SAE</td><td>600</td><td>80</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-digging/gkb-mini-deep-cable-digging-bucket-for-mini-excavator">GKB mini - deep cable digging bucket for mini-excavator</a></td><td>GKB-30</td><td></td><td>150</td><td>37</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-skeleton/rgpr-skeleton-rod-bucket">RGPR - skeleton rod bucket</a></td><td>RGPR-30</td><td>109 SAE</td><td>800</td><td>63</td></tr>
<tr><td><a href="https://sieruta.com/en/products/buckets/mini-excavator-skeleton/rgb-skeleton-rod-grading-sorting-bucket">RGB - skeleton rod grading &amp; sorting bucket</a></td><td>RGB-30</td><td>118 SAE</td><td>1,200</td><td>77</td></tr>
<tr><td><a href="https://sieruta.com/en/products/tools/rippers-rakes/lr-mini-straight-land-rakes-for-mini-excavator">LR mini - straight land rakes for mini-excavator</a></td><td>LR-3 · 2 width variants</td><td></td><td>1,000–1,200</td><td>85–100</td></tr>
<tr><td><a href="https://sieruta.com/en/products/tools/rippers-rakes/lrs-short-land-rakes-for-mini-excavators">LRS - short land rakes for mini-excavators</a></td><td>LRS-3</td><td></td><td>925</td><td>70</td></tr>
<tr><td><a href="https://sieruta.com/en/products/tools/rippers-rakes/rip-mini-ripper-for-mini-excavator">RIP mini - ripper shank for mini-excavator</a></td><td>Ripper-2.5</td><td></td><td></td><td>21</td></tr>
<tr><td><a href="https://sieruta.com/en/products/tools/rippers-rakes/mr-mini-multi-ripper-for-mini-excavator">MR mini - multi-ripper for mini-excavator</a></td><td>MRF 25</td><td></td><td>400</td><td>36</td></tr>
<tr><td><a href="https://sieruta.com/en/products/tools/asphalt-cutters/ac-mini-asphalt-cutter-for-mini-excavator">AC mini - asphalt cutter for mini-excavator</a></td><td>AC-6</td><td></td><td></td><td>43</td></tr>
<tr><td><a href="https://sieruta.com/en/products/tools/grading-beams/grb-light-mini-excavator-grading-beam-with-lowered-mass">GRB light - mini-excavator grading beam with lowered mass</a></td><td>GRB-MIKRO · 3 width variants, GRBH-MIKRO · 3 width variants</td><td></td><td>1,500–2,000</td><td>86–141</td></tr>
<tr><td><a href="https://sieruta.com/en/products/tools/rippers-rakes/rc-root-cutter">RC - root cutter</a></td><td>Root cutter-2</td><td></td><td>170</td><td>13</td></tr>
<tr><td><a href="https://sieruta.com/en/products/tools/rippers-rakes/rr-root-rake-bucket-profile">RRB - root rake bucket profile</a></td><td>RRB-40</td><td></td><td>1,200</td><td>148</td></tr>
<tr><td><a href="https://sieruta.com/en/products/quick-couplers/s-system/s-system-scandinavian-quick-coupler">QC-S - S-System Scandinavian quick-coupler</a></td><td>QC-S40-H, QC-S40-H/240, QC-S40-SA, QC-S40-SA/240, QC-U-S40-H, QC-U-S40-H/240</td><td></td><td></td><td>30–92</td></tr>
<tr><td><a href="https://sieruta.com/en/products/quick-couplers/cw-system/cw-system-quick-coupler">CW - CW-System compatible quick-coupler</a></td><td>CW-05, CW-U-05</td><td></td><td></td><td>25–67</td></tr>
<tr><td><a href="https://sieruta.com/en/products/quick-couplers/ms-system/ms-system-quick-coupler">QC-HS / QC-MS - MS-System compatible quick-coupler</a></td><td>QC-HS-03, QC-MS-03, QC-U-HS-03</td><td></td><td></td><td>30–90</td></tr>
<tr><td><a href="https://sieruta.com/en/products/quick-couplers/pin-grabber/pin-grabber-quick-coupler">QC-PG - pin-grabber quick-coupler for factory brackets</a></td><td>QC-ML-M-35</td><td></td><td></td><td>22</td></tr>
</tbody>
</table>
<p>Figures from <a href="https://sieruta.com/en/fit/caterpillar/caterpillar-301-8">https://sieruta.com/en/fit/caterpillar/caterpillar-301-8</a>, as of 2026-09-13.</p>

Caterpillar 301.8Photo: Strubbl, CC BY-SA 4.0, via Wikimedia Commons

Sizes are matched to the published operating weight of the 301.8.

Weight Class: Mini Excavator (1–6 t)
Operating Weight: 2,030 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 301.8.

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 301.8.

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Bucket line

Link

Machine, line and sizes

Caterpillar 301.8: GP - general purpose digging bucket (GP-30)

301.8 at a glance

Figure	Value	Source
Max dig depth	2,570 mm	maker's document (s7d2.scene7.com)
Max reach	3,960 mm	maker's document (s7d2.scene7.com)
Max dump height	2,640 mm	maker's document (s7d2.scene7.com)
Arm length	960–1,160 mm	maker's document (s7d2.scene7.com)
Main pump flow	66 l/min	maker's document (s7d2.scene7.com)
Auxiliary flow	33 l/min	maker's document (s7d2.scene7.com)
Auxiliary pressure	245 bar	maker's document (s7d2.scene7.com)
Lift capacity	533 kg	maker's document (s7d2.scene7.com)
Transport width	990 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 301.8 figures mean for its attachments

Its auxiliary circuit is rated at 33 l/min and 245 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 66 l/min at 245 bar. That is the pump output of the whole machine, not the flow an attachment gets.
It digs down to 2,570 mm. That is the deepest trench it can open.
Its maximum reach is 3,960 mm.
It dumps at up to 2,640 mm, so a truck or skip side has to sit below that height.
Caterpillar offers arms from 960 to 1,160 mm. A longer arm reaches further, a shorter one handles a heavier bucket.
Caterpillar gives a lifting capacity of 533 kg. Check a heavy grab or hammer, plus its load, against the full load chart.
For transport it measures 3,720 x 990 x 2,300 mm (length, width, height).

Figures as published by Caterpillar in its own documents.

How the 301.8 compares with its neighbours

The nearest models by weight, with the difference to the 301.8 in parentheses where both makers publish the figure.

Model	Operating weight	Max dig depth	Main pump flow	Auxiliary flow
301.8	2.03 t	2,570 mm	66 l/min	33 l/min
Caterpillar 301.6	1.96 t (-0.07 t)	2,540 mm (-30)	66 l/min	33 l/min
Caterpillar 301.7 CR	1.92 t (-0.11 t)	2,540 mm (-30)	66 l/min	33 l/min
CASE CX20D	2.01 t (-0.02 t)	2,380 mm (-190)	18 l/min (-48)	19 l/min (-14)

Figures as each maker publishes them. A difference is shown only where both machines have a published value.

301.8: build years and variants

Build years: 2019–2026

Variants

301.8 (2019–2026)

Years and variants as listed in the LECTURA Specs database.

301.8: what the brochure names

Features Caterpillar names in its own brochure for the 301.8. Some of them may be optional, so check the machine's spec before you order.

A float position on the blade, for levelling.
A load-sensing hydraulic system.
Operator protection certified to ROPS and FOPS.
Two-speed travel.

From Caterpillar's published brochure. We keep the source document on file.

Questions about the 301.8

Can the 301.8 run a hydraulic attachment?: Yes, if the tool's rated range covers the auxiliary circuit: 33 l/min at 245 bar.

Buckets Tools Quick couplers

Bucket sets for this machine

Sets of one bucket profile that include buckets listed for the Caterpillar 301.8. Each set lists the buckets that match the machine's operating weight.

German-profile set
Buckets in the set for this weight: GP, GB, GBH
Italian-profile set
Buckets in the set for this weight: GPL, GBP, GBPH
Nordic-profile set
Buckets in the set for this weight: DS, PS, PSH, KS, KSV
Dutch-profile set
Buckets in the set for this weight: BDP, SB, PDP

Before you order: check the interface

The weight class of the Caterpillar 301.8 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.

On a mini excavator the weight of the attachment counts for more than on a larger machine, because every kilogram of bucket is taken from lift capacity and stability. A narrow trenching bucket and a wide grading bucket are the usual pair, and many machines run a small quick coupler to change between them.

Quick coupler brackets at this weight

In our model tables, the attachments listed for the Caterpillar 301.8 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 Caterpillar models of a similar weight

Other makes of a similar weight

Operating weight within 2 t of the Caterpillar 301.8.

Other Caterpillar models with the same coupler brackets

Our model tables give these machines the same quick coupler brackets.

Caterpillar 302 CR2t

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 301.8.

Get a price Custom Engineering

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.

Attachments for the Caterpillar 301.8 weight range

Catalogue sizes for the 301.8

Start here

Which coupler is on your machine?

Send me the spec sheet for my machine

Send this answer to a colleague or dealer

301.8 at a glance

What the 301.8 figures mean for its attachments

How the 301.8 compares with its neighbours

301.8: build years and variants

Variants

301.8: what the brochure names

Questions about the 301.8

Filters

Buckets

Standard mini-ex buckets set No. 1

Standard mini-ex buckets set No. 2

Dutch mini-ex buckets set No. 3

Nordic mini-ex buckets set No. 4

Special use mini-ex buckets

Tools

Other mini-ex attachments

Also available

Quick couplers