Cat 340D2L — The 40-Ton Quarry Boss: Bigger Than a 336, Smarter Than a 349 🟡⛏️
YUANJIAN MachineryAll news
If the 320D is your production foreman and the PC360-7 is your Japanese earthwork specialist, then the Cat 340D2L is the pit supervisor — the 38–41 ton heavy hitter that sits between a 336 and a 349, and quietly becomes the most profitable machine on a rock site.
It’s not a “bigger 320.” It’s a different animal: longer undercarriage, heavier counterweight, C9 power, 1.9–2.4 m³ bucket, and the kind of stability that lets you load 30-ton trucks all day without feeling like the machine is on its toes.
Here is the full Shopify-style breakdown for the used / refurbished Cat 340D2L.
1. What the 340D2L Actually Is
The “L” matters:
- Long, Heavy-Duty High-Wide (HDHW) undercarriage → wider stance, better lift over front/side, absorbs rock-pile shock
- Operating weight: 38,900–41,500 kg (38.9–41.5 t)
- Engine: Cat C9 ACERT, 8.8 L inline-6, turbo + aftercooler
- Power: 208 kW / 279 hp net (209 kW gross), 1,800 rpm
- Bucket: 1.9 m³ standard, up to 2.4 m³ rock/HD
- Dig depth: 7,190–7,590 mm
- Reach: 10,830–11,130 mm
- Bucket force: 210 kN
- Arm force: 167–185 kN
- Travel: 4.6 km/h, traction 300 kN, 70% gradeability
- Hydraulics: 2× variable piston pumps, ~562 L/min combined, 35 MPa implement pressure
- Fuel tank: 620 L, hydraulic system 410 L
Tier 3 / Stage IIIA — no DPF, no DEF. That alone makes it a export-market favourite.
2. Why the C9 + Cat Hydraulics Still Win
The C9 ACERT is one of Cat’s most field-proven 8.8 L blocks:
- strong low-end torque (1,356 N·m peak)
- tolerant of variable diesel quality (with proper filtration)
- global Cat dealer network — injectors, turbos, seals everywhere
- simpler than Tier 4 Final: no SCR, no particulate burn-off logic
Paired with Cat’s load-sensing hydraulic system:
- boom-up + stick-in + swing combine smoothly
- no bog-down under heavy bank
- fast cycle times with 1.9 m³+ bucket
- pump flow matched to lever input, not wasted as heat
Field data from Asian quarries: a 340D-class machine matches bigger 40-tonners on productivity, but runs 14–16% better fuel efficiency in Eco/High-Power modes.
3. The “L” Chassis = The Real Upgrade
Most buyers confuse 340D and 340D2L. The L is the one you want:
✅ HDHW long undercarriage
✅ wider track gauge (~2,920 mm)
✅ 600 mm triple-grouser pads standard
✅ higher ground clearance
✅ more stable with 2.0–2.4 m³ bucket
✅ better lift over side (critical on bench walls & stockpiles)
A standard 340D is fine. The 340D2L is what you specify when the ground is broken, the rock is hard, and the trucks keep coming.
4. Jobs the 340D2L Was Born For
🪨 Quarry face loading — 1.9–2.4 m³ rock bucket, blast cleanup
🚛 30-ton truck loading — correctly sized, not overpowered like a 349
⛏ Mining overburden & ore — swing-out, load haul trucks, stockpile
🏗 Large foundations / deep pits — 7.5 m dig depth, long reach
🛣 Highway / rail subgrade — mass excavation, embankment
🏚 Heavy demolition — breaker-ready, reinforced arm, big counterweight
🏝 Port / reclamation — bulk material, barge support
♻ Waste & slag handling — grapple-ready, stable on uneven fill
If you’re running 20-ton trucks, a 336 is small. If you’re running 30–35-ton trucks, the 340D2L is the sweet spot. A 349 starts burning money.
5. 340D2L vs The Neighbours (Honest Comparison)
vs Cat 336D2 / 336D
- 336 is ~2 t lighter, tighter in confined sites, cheaper used
- 340D2L carries bigger bucket, more stable on rock, better resale in quarry markets
- Choose 340 if you load trucks for a living
vs Cat 349D L
- 349 jumps to C13 (283 kW), 46 t, 3.2 m³ bucket
- 10–18% more production, but 20–25% more fuel, 35–45% higher used price
- 349 only makes sense with 45-ton trucks
vs Komatsu PC360-7
- PC360 is 33–36 t, 180–202 kW, slightly nimbler
- 340D2L wins on stability, bucket size, Cat-brand tender compliance
- PC360 wins on fuel in light soil
vs Komatsu PC400-8
- PC400 is true 40–43 t class, bigger pump flow
- 340D2L usually cheaper used, better global Cat parts tree
vs SANY SY365 / LiuGong 940
- cheaper new, closing warranty gap
- but a used Cat 340D2L still outsells them on resale in Nairobi / Almaty / Lima / Lagos
6. Refurbished / Inspected Stock — What We Check
For every used 340D2L we prepare:
✅ Engine — cold start, blow-by, coolant sample, turbo shaft play, injector balance, no milky oil
✅ Hydraulics — warm-oil pressure test, boom/arm drift test (<5 cm/min), pump whine check, original Cat pumps verified (no no-name swap)
✅ Swing & travel — motor temp, bearing play, final-drive seal check
✅ Structure — boom root, stick behind bucket cylinder, carbody cross-member dye-check for hidden weld repairs
✅ Undercarriage — 600 mm pads, link pitch stretch, roller/idler/sprocket grading
✅ Cab — ROPS/FOPS, A/C, monitor, seat, glass, camera
✅ Docs — serial prefix, build market (JP/US/EU/CN), hour-meter consistency, variant confirmation (340D2 vs 340D2L)
✅ Video — cold start + dig + load + swing + travel + leak-closeups
We don’t sell “repainted quarry survivors.” We sell machines where the steel matches the story.
7. Attachments
- 1.9 m³ GP bucket (std)
- 2.1–2.4 m³ rock bucket (HD wear package)
- 900 mm / 1,200 mm trench bucket
- Hydraulic thumb
- 155–175 mm breaker (heavy demo)
- Ripper / frost tool
- Grapples (waste, wood, scrap)
- Long-reach arm conversion available on request
Aux lines installed during refurb if needed.
8. Running Cost Reality
- Fuel: ~17–20 L/h in normal loading (less in Eco mode vs 349)
- Tracks: 600 mm standard, 700 mm option for rock life
- C9 overhaul (if ever needed): budget-aware vs 349 C13 cost
- Hyd oil: 410 L system, extended intervals with good sampling
- Transport: low-bed required, but no oversize permit in most markets
- Resale: Cat 40-ton class holds value better than most Chinese/legacy Japanese 40t units
9. Who Should Buy a 340D2L
✅ Quarry / aggregate producers
✅ Mining contractors (overburden, ore, stockpile)
✅ Road & rail mass-earthmoving crews
✅ Rental yards serving heavy industrial clients
✅ Equipment dealers wanting fast-resale Cat 40t stock
✅ Contractors bidding tenders that specify “Cat 40-ton class”
✅ Owners stepping up from 336/320D who need more bucket without 349 cost
Not for:
❌ Backyard / urban tight-access (too wide, too heavy)
❌ Pure trenching (overkill — get PC110 / 320D)
❌ Markets mandating Stage V/DPF (this is Tier 3)
10. Spec Snapshot (Engineer-Friendly)
|
Item
|
Cat 340D2L
|
|---|---|
|
Operating weight
|
38,900–41,500 kg
|
|
Engine
|
Cat C9 ACERT, 8.8 L, 6-cyl turbo
|
|
Power
|
208 kW net / 209 kW gross @ 1,800 rpm
|
|
Emission
|
Tier 3 / Stage IIIA (no DPF/DEF)
|
|
Bucket
|
1.9 m³ std (1.6–2.4 m³ opt)
|
|
Bucket force
|
210 kN
|
|
Arm force
|
167–185 kN
|
|
Dig depth
|
7,190–7,590 mm
|
|
Reach
|
10,830–11,130 mm
|
|
Dump height
|
7,000 mm
|
|
Hydraulics
|
2× ~281 L/min, 35 MPa
|
|
Travel
|
4.6 km/h, 300 kN traction
|
|
Swing
|
8.3–9.0 rpm
|
|
Tracks
|
600 mm HDHW (700 mm opt)
|
|
Fuel / Hyd tank
|
620 L / 410 L
|
11. Why Own a 340D2L + 320D Combo
We said earlier: own a 320D and a PC200-8.
Now the heavy-yard version:
- 320D → general 20t production, flexible, easy to rent
- 340D2L → quarry/truck-loading anchor, big bucket, stable
Together:
- 320D handles trenching, footings, utility, light rock
- 340D2L handles face loading, 30t trucks, overburden
- One parts mindset (Cat C-series engines, common filters)
- Cover 20t and 40t contracts without a 349’s fuel bill
12. Bottom Line
The Cat 340D2L is the most balanced 40-ton excavator Cat ever made for the used-export world:
- C9 power, no emissions complexity
- HDHW long undercarriage, rock-proof stability
- 1.9–2.4 m³ bucket, 210 kN breakout
- 7.5 m dig depth, 11 m reach
- 14–16% better fuel than bigger 40-tonners
- Cat global parts, strong resale, quarry-proven
It’s not the cheapest 40-ton. It’s the one that makes money on the hardest job and still has a buyer when you’re done.
336 is too small. 349 is too hungry. The 340D2L is just right.
📩 340D2L Stock Inquiry
Tell us:
- Std 340D2 or 340D2L (long UC)?
- Bucket: 1.9 GP / 2.1 rock / 2.4 HD?
- Breaker line + thumb?
- Undercarriage: 600 / 700 mm?
- Original paint or refurbished grade?
- Destination port → FOB or CIF?
We send:
✅ Cold-start + load-test video
✅ Serial / hour-meter / C9 health report
✅ Undercarriage % + hydraulic pressure sheet
✅ Refurbish record (if applicable)
✅ FOB Qingdao/Shanghai or CIF quote
📞 WhatsApp / WeChat: +86 138 6666 6316
📧 Email: yuanjianltd@163.com
🌐 Website: https://www.cnusedexcavator.com
Yard: Hefei, Anhui, China
Status: Inspected, serviced, container-ready.
📧 Email: yuanjianltd@163.com
🌐 Website: https://www.cnusedexcavator.com
Yard: Hefei, Anhui, China
Status: Inspected, serviced, container-ready.
Cat 340D2L — 40 tons of quarry discipline, sized between the 336 and the 349, priced for contractors who count litres per tonne. 🟡⛏️