JRG Composite Hydro-Pneumatic Booster Cylinder

Composite Type

JRG Composite Hydro-Pneumatic Booster Cylinder

Compact two-stage design delivering 1-14 tons of high-pressure output with 30-60 cycles/min — the fastest cycling model in the JiuRong lineup for high-frequency assembly and forming.

ISO 9001:2015 4-7 kgf/cm² Air VG68 Hydraulic Oil 0-60°C Operation

1-14TOutput Range

50-400Total Stroke (mm)

50-400Speed (mm/s)

30-60Cycles/min

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Design Philosophy

Why Choose Composite Type?

The JRG merges the two-stage force profile of a pre-press cylinder with a compact, integrated body — engineered for high-cycle production where floor space and speed matter.

JRA Standard

Pre-Press + Boost

Two-stage with separate oil reservoir; larger footprint, proven reliability.

JRE Direct-Acting

Full-Stroke High Force

Single-stage high force throughout; short power stroke only (5-25mm).

This Model

JRG Composite

Two-stage force in a compact integrated body; up to 60 cycles/min.

⚡

High-Frequency Cycling

30-60 cycles/min — the highest cycling rate in the JiuRong HPC lineup, ideal for automated high-volume production.

■

Compact Composite Structure

Integrated air-oil design eliminates external piping and reduces overall envelope versus standard pre-press types.

⇵

Two-Stage Force Profile

Fast low-force approach (50-400mm/s) followed by high-pressure boost stroke — both speed and power in one unit.

✒

Stable Output Force

Hydraulic intensification delivers consistent, repeatable force with ±0.20mm power-stroke tolerance.

⚙

Easy Maintenance

Simple internal structure, accessible components, and standard VG68 anti-wear hydraulic oil keep downtime minimal.

📏

Wide Configurability

4 bore sizes (50-100mm), 3 tonnages (5/8/10T), total strokes 50-400mm, and power strokes 5-20mm.

Data Sheet

Technical Specifications

Performance

Actuation Type	Double-Acting
High Pressure Output	1-14 tons
Standard Tonnages	5T / 8T / 10T
Operating Pressure	4-7 kgf/cm²
Operating Frequency	30-60 cycles/min
Operating Speed	50-400 mm/s

Fluid & Environment

Hydraulic Medium	VG68 Anti-Wear Oil
Operating Temperature	0-60°C
Hyd. Cylinder Proof Pressure	120 kgf/cm²
Air Cylinder Proof Pressure	30 kgf/cm²
Pre-press Stroke Tolerance	+1.00 / 0.00 mm
Power Stroke Tolerance	+0.20 / 0.00 mm

Mechanical

Bore Sizes	Φ50 / 63 / 80 / 100 mm
Total Stroke Range	50-400 mm
Power Stroke Options	5 / 10 / 15 / 20 mm
Mounting	Vertical (standard)
Solenoid Valves	DT1 + DT2 (2 valves)
Certification	ISO 9001:2015

Force Profile

Force vs. Displacement Profile

The JRG delivers a fast low-force approach, then switches to high-pressure boost for the final 5-20mm — combining rapid cycle times with full pressing force.

Approach Force (Air) Boost Force (Hydraulic)

The composite design integrates both phases in a single compact body. Approach speed reaches 50-400 mm/s; boost stroke is 5-20mm with full tonnage.

Air Circuit

Pneumatic Circuit Diagram

Dual solenoid valves independently control the approach and boost phases for precise, repeatable cycling.

Air SourceCompressed air supply at 4-7 kgf/cm²

FRL UnitFilter-Regulator-Lubricator for air treatment

DT12-position 5-way solenoid valve — controls cylinder approach/return

DT22-position 5-way solenoid valve — controls boost stroke

Port ALower cylinder/air chamber port, connects to DT2 port A

Port BOil reservoir/upper air chamber port, connects to DT1 port B

Port DUpper cylinder exhaust/intake port, connects to DT1 port A

Air Source → FRL → P port splits to DT1 & DT2 → DT1 controls approach/return → DT2 triggers boost → R exhaust

Cycle Logic

Operation Sequence (4-Step Cycle)

Two solenoid valves coordinate the approach and boost phases in a fully automatic cycle.

Approach Stroke

DT1 energizes. Air pressure acts on the hydraulic oil surface, driving the piston downward at high speed through the total stroke.

DT1 ON DT2 OFF

Boost Stroke

The piston meets resistance. DT1 holds while DT2 energizes, activating the booster assembly for high-pressure output through the power stroke.

DT1 ON DT2 ON

Pressure Release

After the required dwell/holding time, DT2 de-energizes. The booster assembly retracts and the cylinder releases pressure.

DT1 ON DT2 OFF

Return Stroke

DT1 de-energizes. The cylinder assembly retracts, hydraulic oil flows back to the reservoir, and one cycle is complete.

DT1 OFF DT2 OFF

Installation

Mounting Configurations

Vertical (Standard)

Rod-down mounting on a press frame or machine platen. The standard configuration for all JRG models.

Standard

Custom Orientation

Special mounting angles or configurations available on request. Contact our engineering team for non-standard applications.

On Request

Custom Stroke & Force

Beyond the standard 5-10T range, custom tonnages up to 14T and strokes up to 400mm can be engineered to order.

Up to 14T

Dimensions

Installation Dimensions

Select a bore size to view standard dimensions. All values in millimeters.

Ton	A	B	C	D	F (Air Port)	G (Rear Port)	H	I	J	K	L	M (Rod Thread)	O
5T	110	110	80	13	ZG3/8"	ZG3/8"	95	50	75	35	35	M30×1.5	90
8T	110	110	90	13	ZG3/8"	ZG3/8"	95	50	75	35	35	M30×1.5	90
10T	140	140	110	17	ZG3/8"	ZG3/8"	105	50	75	35	35	M30×1.5	110

Ton	N @ 5mm Stroke	N @ 10mm Stroke	N @ 15mm Stroke	N @ 20mm Stroke
5T	347	387	427	467
8T	347	387	427	467
10T	435	475	515	565

Ton	A	B	C	D	F (Air Port)	G (Rear Port)	H	I	J	K	L	M (Rod Thread)	O
5T	140	140	110	17	ZG3/8"	ZG3/8"	105	50	75	35	40	M30×1.5	110
8T	140	140	110	17	ZG3/8"	ZG3/8"	105	75	90	40	40	M36×1.5	130
10T	160	160	129	21	ZG1/2"	ZG1/2"	117	75	90	40	45	M36×1.5	130

Ton	N @ 5mm Stroke	N @ 10mm Stroke	N @ 15mm Stroke	N @ 20mm Stroke
5T	366	410	454	498
8T	445	490	535	580
10T	445	490	535	580

Ton	A	B	C	D	F (Air Port)	G (Rear Port)	H	I	J	K	L	M (Rod Thread)	O
5T	160	160	129	21	ZG3/8"	ZG1/2"	117	75	90	40	45	M36×1.5	140
8T	180	180	150	21	ZG1/2"	ZG1/2"	150	110	110	60	50	M40×2	180
10T	180	180	150	27	ZG1/2"	ZG3/4"	150	110	110	60	50	M40×2	180

Ton	N @ 5mm Stroke	N @ 10mm Stroke	N @ 15mm Stroke	N @ 20mm Stroke
5T	423	466	509	552
8T	566	623	680	737
10T	566	623	680	737

Ton	A	B	C	D	F (Air Port)	G (Rear Port)	H	I	J	K	L	M (Rod Thread)	O
5T	180	180	150	27	ZG1/2"	ZG3/4"	150	110	110	60	50	M40×2	180
8T	180	180	150	27	ZG1/2"	ZG3/4"	150	110	110	60	50	M40×2	180
10T	200	200	180	30	ZG3/4"	ZG1"	180	140	145	75	60	M48×2	230

Ton	N @ 5mm Stroke	N @ 10mm Stroke	N @ 15mm Stroke	N @ 20mm Stroke
5T	475	530	585	640
8T	475	530	585	640
10T	635	705	775	845

N values are calculated at 10mm power stroke. For strokes exceeding 10mm, refer to the engineering drawing. S = total stroke. Standard data; custom dimensions available on request.

Force Data

Theoretical Output Force

Output force at 4-7 kgf/cm² supply pressure. Values in kgf.

Bore	Model	4 kgf/cm²	5 kgf/cm²	6 kgf/cm²	7 kgf/cm²
50mm	5T	780	975	1,170	1,365
50mm	8T	1,250	1,562	1,875	2,187
50mm	10T	1,560	1,950	2,340	2,730
63mm	5T	980	1,225	1,470	1,715
63mm	8T	1,568	1,960	2,352	2,744
63mm	10T	1,960	2,450	2,940	3,430
80mm	5T	1,600	2,000	2,400	2,800
80mm	8T	2,560	3,200	3,840	4,480
80mm	10T	3,200	4,000	4,800	5,600
100mm	5T	2,500	3,125	3,750	4,375
100mm	8T	4,000	5,000	6,000	7,000
100mm	10T	5,000	6,250	7,500	8,750

Above data are theoretical values. Actual output force is recommended not to exceed 50% of the theoretical value to avoid affecting operating speed.

Model Comparison

JRG vs JRA vs JRE

Choose the right architecture for your application.

JRA Standard

Pre-Press Type

Classic two-stage design with external oil reservoir. Proven for general pressing applications.

Output1-40T

Stages2 (approach + boost)

Cycles/min25-45

MountingVertical / Horizontal

Best for:

General pressing & forming
Wide force range
Horizontal mounting needs

View JRA →

This Model

JRG Composite

Compact High-Frequency

Integrated two-stage design in a compact body. Highest cycling rate for automated production.

Output1-14T

Stages2 (approach + boost)

Cycles/min30-60

MountingVertical

Best for:

High-cycle automation
Space-constrained installations
Plastic welding & riveting

JRE Direct-Acting

Direct Pressure Type

Single-stage full-force output with one solenoid valve. Simple control, short power stroke.

Output1-13T

Stages1 (direct pressure)

Cycles/min25-45

MountingVertical / Horizontal

Best for:

Short-stroke pressing
Simple control logic
Marking & embossing

View JRE →

Configurator

Build Your Model Number

Select parameters to generate your JRG model code and see theoretical output force in real time.

JR-G-80-100-10L-5T

JR-G Composite Type - 80 ∅80mm bore - 100 100mm total stroke - 10L 10mm power stroke - 5T 5 tons output

Oil Cylinder Bore Total Stroke Power Stroke Output Tonnage

Supply Pressure: 6.0 kgf/cm²

50.3Air Piston Area (cm²)

302Air Force (kgf)

7.95Boost Ratio

2,400Theoretical Output (kgf)

Theoretical output = Base force at 6 kgf/cm² × (supply pressure ÷ 6). Air force = piston area × supply pressure. Boost ratio = theoretical output ÷ air force. Actual working load should not exceed 50% of theoretical output.

Need a custom configuration? Send us your model code →

How to Select

Selection Guide

Specify these seven parameters when requesting a quotation.

Total BoreCylinder bore diameter (mm)

Pre-press StrokeTotal approach stroke (mm)

Power StrokeHigh-pressure stroke (5-20mm)

Output TonnageRequired force (tons)

Operating FrequencyCycles per minute

Return ForceRequired return force (kg)

Mounting TypeStandard vertical or custom

Applications

Typical Applications

⚙

Product Forming

Metal and composite part forming and shaping

🔦

Plastic Welding

Ultrasonic and heat-staking plastic assembly

🔌

Electronic Riveting

High-speed riveting of electronic components

🔨

Sheet Metal Forming

Bending, punching, and light stamping

📦

Precision Assembly

Automated press-fit and insertion operations

🏭

Marking & Embossing

High-cycle part marking and logo embossing

Downloads

Resources & Downloads

📄

JRG Catalog (PDF)

Full product catalog with dimensions and specifications

Request Catalog →

📐

2D/3D CAD Models

Step files and dimensional drawings for integration

Request CAD →

🛠

Installation Manual

Setup, operation, and maintenance guidelines

Request Manual →

Ready to Configure Your JRG?

Send us your requirements and our engineering team will recommend the exact model for your application.

Request a Quote Talk to an Engineer