does this have mounting screws on the bottom?

There is one recessed Allen head bolt in the center. Not sure if it's for mounting or holding the the guts together. But no other holes.

Does one hand pump work for all units? When you say, "only retracts with heavy gravity" , how much weight are you talking about?

Dear， we need to know what's your hand pump, for example if you want to buy the 50t jack, you need a hand pump like the product( amazon code: B06Y1HKMVC， search it on amzon , you will find it), but if you want more efficient， we advise you to choose electric hydraulic pump. About the "only retracts with heavy gravity", we are sorry, the jack doesn't need to retract with heavy gravity, it will retract by itself when the pump pressure relief, we will change our description.

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NEWTRY 20T Long Hydraulic Ram Jack, 4" Stroke Porta Power Auto Retract

Product ID: 174850892

Details

Brand
NEWTRY
Load Capacity
20 tons
Material
Metal Steel
Maximum Lifting Height
10 centimeters
Vehicle Service Type
Not for car

📏4-inch extended stroke for max reach

🔄automatic piston retraction

⚙️20-ton heavy-duty capacity

$375.92

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Lift smarter, not harder — the pro’s choice for heavy-duty precision!

EXTENDED 4 INCH STROKE - Gives you extra reach and versatility on any job site.
MULTI ANGLE FLEXIBILITY - Works flawlessly in vertical, horizontal, or inverted positions for ultimate adaptability.
POWERFUL 20 TON CAPACITY - Handles the heaviest industrial lifting tasks with ease.
AUTOMATIC PISTON RETRACTION - Simplifies operation—no manual reset needed after lifting.
DURABLE RUST RESISTANT FINISH - Sleek lacquered surface and dust cover ensure long-lasting performance.

The NEWTRY 20 ton Hydraulic Cylinder Long Jack features a robust 20-ton lifting capacity with a 4-inch stroke for extended reach. Built from durable alloy steel with a rust-resistant lacquered finish and dust cover, it ensures longevity in tough environments. Its automatic piston retraction streamlines operation, while multi-angle usability makes it versatile for shipbuilding, bridge construction, and industrial applications.

Specifications

ASIN	B0811HC25W
Best Sellers Rank	#231,414 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #143 in Hydraulic Lifting Cylinders
Brand Name	NEWTRY
Color	Yellow
Compatible with Vehicle Type	Not for car
Customer Reviews	3.9 3.9 out of 5 stars (16)
Item Highlight	For Quick Cycle, Lifting For Shipbuilding, Bridge & Construction, Compact, Steel & Portable
Item Weight	6.14 kg
Load Capacity	20 tons
Manufacturer	NEWTRY
Manufacturer Part Number	YX503
Material Type	Metal, Steel
Maximum Lifting Height	10 centimeters
Minimum Height	15.6 centimeters
Model Number	YX503
Number of Items	1
Number of Packs	1
Style Name	20 ton

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