Description
Detail Information
| Parameter | Value | Note |
|---|---|---|
| Origin | China | Remanufactured |
| Warranty | 3-6 months according to product details; We do not provide warranty for original and used products. | – |
| Minimum Order Quantity | 1 piece | – |
| Monthly Output | 300 pieces/month | – |
| Packaging Details | Wooden case packaging or customized | – |
| Payment Terms | T/T, XT, PayPal, Western Union | – |
| Delivery Time | 5-8 working days (depending on order situation) | – |
| Shipping Method | Sea freight, air freight or via DHL/FEDEX/TNT/EMS | – |
| Guarantee Measures | We inspect the product and send detailed pictures to buyer for confirmation. | – |
Note: The application information provided is for reference only. Please confirm the part number and compare it with the old component before purchasing. If you have any questions, please feel free to contact us.
It is worth choosing a product that features stable performance, high reliability, easy installation, and quick response.
A 110‑ton machine deserves a pump that delivers full power, not excuses. Here is how to get it without paying new OEM prices.
The Real Cost of a Tired Pump on a 110‑Ton Excavator
Your EX1100 moves over 100 tons of material per cycle. When the main pump (NV170) loses efficiency, the loss is not measured in a few seconds of cycle time. It is measured in trucks not loaded, fuel burned for nothing, and operators frustrated by a machine that used to be a monster.
Let’s be blunt: A worn NV170 pump does not fail suddenly. It dies slowly. You notice the boom rises a little slower. The swing hesitates when you need it to be crisp. The oil temperature creeps up. Your mechanic says “it still works.” But every day you run a tired pump, you are paying for it in fuel, lost production, and heat damage to the rest of the hydraulic system.
The question is not whether to replace it. The question is: new genuine, used salvage, or remanufactured?
| Option | Upfront Cost | Hidden Cost | Verdict |
|---|---|---|---|
| New genuine NV170 | Very high | None – but hard to justify on an older machine | Safe but expensive |
| Used pump from a breaker | Low | Unknown hours, unknown contamination, likely to fail within months | Gambling |
| HTD remanufactured NV170 | Moderate | None – fully tested, new wear parts | The smart choice |
Here is what most used pumps do not tell you: The cylinder block has micro‑scoring. The valve plate has lost flatness. The bearings have been through 10,000+ stress cycles. A used pump is not a bargain. It is someone else‘s problem waiting to happen.
What NV170 Means – And Why Size Matters
The NV170 is a large variable displacement tandem axial piston pump, sized for the EX1100‘s 110‑ton class. It pushes massive volumes of oil at pressures up to 34.3 MPa (≈4,975 psi). Total flow exceeds 600–700 L/min. This is not a pump you replace casually.
When we remanufacture an NV170, we do not “clean and reseal.” We completely disassemble, inspect, and replace every worn component:
Cylinder block and valve plate – precision ground to restore flatness (critical for efficiency)
All bearings – always new. Never reused.
Piston assemblies – matched and replaced as a set when worn
Swashplate – reconditioned or replaced
Seals and O‑rings – all new (high‑temp fluororubber)
The result is a pump that delivers flow and pressure within 5% of new OEM specifications. Your EX1100 regains its original digging force, swing speed, and travel power.
Who Buys a Remanufactured NV170 – And Why
Mining contractors – In open‑pit mines, downtime is measured in lost tons, not hours. A reman pump gives predictable life (3,000–5,000 hours) at a cost that fits maintenance budgets. You schedule the replacement, not react to a failure.
Heavy civil projects – Dam construction, highway cuts, port development. Your EX1100 works long shifts. A pump with new bearings and ground wear surfaces runs cooler, lasts longer, and burns less fuel.
Equipment rental fleets – A 110‑ton excavator rents for premium rates. A pump failure during a rental kills your reputation and your profit. A reman pump eliminates that risk at a reasonable price.
Owners of older EX1100s – The machine still has years of life, but a new OEM pump costs more than the machine’s current market value. Remanufacturing makes economic sense.
What You Get From Us
NV170 pump, fully remanufactured – OEM specification, China remanufactured
Hydraulic test stand report – actual pressure, flow, case drain, and control response numbers (available on request)
New bearings, seals, re‑ground wear surfaces – no shortcuts
Pre‑shipment photos – you see your actual pump before we pack it
Heavy‑duty wooden case – fumigation‑free, braced for sea or air freight
5–8 working days delivery – from our Guangzhou warehouse
Installation – What Your Mechanic Needs to Know
The NV170 is large and heavy. A few simple rules prevent immediate failure:
The case drain line is not optional. If it is blocked or kinked, back pressure will blow the shaft seal on first startup. Inspect the line before connecting.
Flush the system. If the old pump failed with metal debris, every component downstream (valves, motors, cylinders) contains contamination. Replace all filters and clean the tank before running the new pump.
Use new seals. Every O‑ring and copper washer on hydraulic connections must be new. Reused seals leak.
Bleed air. After installation, idle the engine and slowly cycle each function several times. The pump may be noisy at first – that is trapped air.
Why Hongtengda Parts
We have been remanufacturing large hydraulic pumps since 2001. We understand that a 110‑ton excavator cannot wait weeks for a part. Our Guangzhou warehouse stocks remanufactured NV170 pumps ready for dispatch.
We do not ship blindly. Before packing, we send you clear photos of your pump. You approve – we ship.
Warranty note: 3–6 months depending on product details. We do not provide warranty service for original used or remanufactured parts. Our commitment is upfront: proper remanufacturing, full testing, and visual verification before shipment. For customers who need a warranty‑covered option, ask about new aftermarket units.
Send us your EX1100 machine serial number and a photo of the old pump nameplate – we will confirm compatibility and quote within 24 hours.
