Hydraulic Hollow Ram Jacks Plain Ram, Single Acting

Product Description

Capacity 10 - 100 ton / Stroke 50 - 150 mm / Max. Working Pressure 700 bar

Capacity (ton)	Capacity (kN)	Stroke (mm)	Model	Effective area (cm2)	Oil cap. (cc)	Closed height (mm)	Wt. (Approx.) (kg)
10	110	50	OSH 10-50	15.7	79	150	3.7
10	110	75	OSH 10-75	15.7	118	175	4.2
10	110	100	OSH 10-100	15.7	157	200	4.7
20	231	50	OSH 20-50	33	165	155	8
20	231	100	OSH 20-100	33	330	205	10.5
20	231	150	OSH 20-150	33	495	255	12.5
30	298	50	OSH 30-50	42.6	213	175	10.5
30	298	75	OSH 30-75	42.6	320	200	11.5
30	298	100	OSH 30-100	42.6	426	225	12.5
30	298	150	OSH 30-150	42.6	639	275	14.5
50	550	75	OSH 50-75	78.5	589	210	21
50	550	100	OSH 50-100	78.5	785	235	22
60	605	75	OSH 60-75	86.4	648	225	26
60	605	100	OSH 60-100	86.4	864	250	28.5
60	605	150	OSH 60-150	86.4	1296	300	33
100	990	75	OSH 100-75	141.4	1060	245	45
100	990	100	OSH 100-100	141.4	1414	270	48.5

Features of Hollow Ram Jacks Single Acting

Different models of single-acting hollow ram jacks are available in the market, depending on their capacity, stroke length, working pressure, and design features. Some standard features of single acting hollow ram jacks are:

Plain ram: It means that the piston rod has a smooth surface without any threads or attachments. Plain ram jacks are suitable for applications that do not require precise alignment or attachment of accessories.

Collar threads: These are threads on the outer surface of the cylinder body that allows for easy mounting of accessories such as eye nuts or clevises.

Base mounting holes: These are holes on the bottom of the cylinder body that allows for secure bolting of the jack to a flat surface.

Stop ring: This metal ring prevents over-extension of the piston rod and protects it from damage.

Safety valve: This valve releases excess pressure in case of overload or malfunction.

Applications of Hollow Ram Jacks Single Acting

Hollow ram jacks single acting have many applications in various industries, such as construction, mining, bridge building, heavy lifting, tensioning, testing, and maintenance.

Some of the common uses of hollow ram jacks single acting are:

Post-tensioning

Hollow ram jacks single acting can be used to apply tension to steel cables or rods that are embedded in concrete structures, such as bridges, dams, or buildings. The wires or rods are passed through the hole of the jack and attached to a wedge or anchor at one end. The jack is then pressurized to pull the cable or rod and create a compressive force on the concrete. It increases the strength and durability of the structure.

Cable splicing

Hollow ram jacks single acting can splice or join two sections of steel cables or wires. The cables or wires are passed through the hole of the jack and secured with clamps or grips at both ends. The jack is then pressurized to pull the cables or wires together and create a tight connection.

Flange spreading: Hollow ram jacks single acting can be used to separate two bolted flanges. The flanges are metal rings that connect pipes, valves, or other equipment. The jack is inserted between the flanges and pressurized to push them apart. It allows for easy access to inspect, repair or replace the equipment.

Bolt tensioning

Hollow ram jacks single acting can apply tension to bolts that fasten two components together. The bolts are passed through the hole of the jack and secured with nuts at both ends. The jack is then pressurized to pull the bolts and create a clamping force on the components.

Shaft extraction

Hollow ram jacks single acting can extract shafts stuck in bearings, gears, or other machinery parts. The rods are passed through the hole of the jack and attached to a puller at one end. The jack is then pressurized to pull out (or push out)the shaft from its position.

Advantages of Hollow Ram Jacks Single Acting

Hollow ram jacks single acting have many advantages over conventional hydraulic cylinders, such as:

• They can perform both pushing and pulling operations with one device.
• They can accommodate different sizes and shapes of loads by passing them through the hole.
• They can reduce space requirements by eliminating external attachments or accessories.
• They can increase safety by avoiding side loads or bending stresses on the piston rod.

Orione Hollow Ram Jacks Single Acting has a capacity range from 10 to 200 tons and a stroke range from 50 to 300 mm. They have a maximum working pressure of 700 bar and come with collar threads, base mounting holes, a stop ring, a safety valve, a dust seal ring, a wiper seal ring, coupler half set with a dust cap.

Safety Precaution

Single acting hollow ram jacks are versatile tools that can be used for various industrial applications. However, they also require proper maintenance and safety precautions to ensure optimal performance and longevity.

Some tips for using single acting hollow ram jacks are:

Single acting hollow ram jacks are powerful devices that can help you accomplish various tasks easily. By choosing the suitable model for your needs and following proper guidelines, you can enjoy its benefits for years.

• Use only recommended hydraulic oil and keep it clean and contaminant-free.
• void side or eccentric loads on the piston rod as they can cause bending or damage.
• se accessories that match the jack's capacity and thread size.
• Do not exceed the jack's rated capacity or stroke length.
• Do not use damaged or worn-out parts or hoses.
• Follow the manufacturer's instructions for operation and storage.

Versatile Hydraulic Jack Design

The Hydraulic Hollow Ram Jacks Plain Ram models feature a hollow center plunger and a robust, single-acting structure. Their design accommodates versatile mounting options, including base and threaded collar mounting, and allows for both pressing and pulling operations. The external threads on the body simplify installation, while their compatibility with manual hydraulic pumps ensures controlled operation.


Enhanced Durability & Safety

Each Hydraulic Hollow Ram Jack is constructed from high-grade alloy steel with an anti-corrosive chrome finish, ensuring operational longevity, even in harsh work environments. Built-in safety valves and replaceable seals offer enhanced protection and maintenance efficiency, while compliance with DIN and ISO standards guarantees quality and reliability.


Wide Range of Applications

These hydraulic jacks excel in various heavy-duty uses such as maintenance, construction, heavy lifting, and testing. Their hollow centers accommodate threaded rods or cables, making them suitable for tensioning, pulling, and pushing. Accessories like couplers, dust caps, and pressure gauges further extend their utility in industrial tasks.