Chain No.	节距 P itch P	滚子直径 Roller diam eter d1 d5 m ax		内节内宽 W idth betw een nnerpltes	销轴直径 Pi diam eter	销轴长度 Pi length	链板高度 Plte depth	链板厚度 Phte thickness	抗拉强度 Tensile strength	平均抗拉强度 Average tensile treng th	每米重量 Weight per m eter
				b1 mn	d2 max	L m ax	h2 m ax	t/T m ax	Q. mn	Q0	q
	mm	mm	mm	mm	mm	mm	mm	mm	kN/bf	kN	kg/m
P95	95	50.8	58	30	13.5	70	38	6	75.0/16871	82.5	9.93
P100F225-G4	100	40	-	22	11.3	53.5	32	4.5	69.0/15511	75.9	5
P100F269-G4	100	48.5	-	57.6	25.4	120	75	10	550.0/123640	605	31.1
P125F61-G4	125	63.5	-	67.4	32	141	90	12	750.0/168600	825	47
P125F62-G4	125	70	-	75	36	168	100	16	1000.0/224800	1100	68.6
P150F142-G4	150	78	-	80	39	172	120	16	1350.0/303480	1485	78.9
RF10150RF1	150	50	60	30	14.5	69	38.1	8.0/6.3	200.0/44992	220	8.64
P150F47	150	54	-	40	27	112	68.5	12	600.0/67487	680	25.7
RF10150RF1-G4	150	29	-	30	14.5	69	38.1	6.3	200.0/44960	220	16.7
P152F41	152.4	38.1	-	36	15.5	90	50	8	150.0/33743	165	11.91
P152F236-G4	152.4	36	-	36.5	18	87	50	8	280.0/62944	308	12.1
RF17200M F1-G-4	200	44.5	-	51.4	19.1	120	60	10	245.0/55114	269.5	17.6
RF17200M F2-G-4	200	44.5	-	51.4	19.1	109.5	50.8	9.5	213.0/47916	243	15.1
P200F128-G4	200	50.8	-	56.6	24	120	70	9.5	450.0/101164	490	19.4
P200F130-G4	200	44.5	-	51.8	19.1	113	60	10	321.0/72164	353.1	17.8
P250F6	250	63.5	-	67	31.8	146	90	12	900.0/101230	495	31.7
P250F66	250	80	-	67	19.1	109.5	50.8	9.5	329.0/73962	378	19.79
P250F71SS	250	100	125	79	22	120	64	10	320.0/71939	368	29.8
P250F87-G4	250	80	-	51.4	22	109	50.8	9.5	329.0/73959	361.9	19.6
P250F110-G4	250	80	105	51.5	19.1	110	50	9	356.4/80119	392	18.3
P250F163	250	70	-	76	35	165	100	16	1100.0/247280	1210	44.1
P300F1	300	70	-	75	35	174	100	16	1065.0/239580	1118	47.47
P350F2-G4	350	85	-	85	41.75	189.5	115	16	1200.0/269772	1372	48.43

Chain No.	节距 P itch P	滚子直径 Roller diam eter d1 d5 m ax		内节内宽 W idth betw een nnerpltes	销轴直径 Pi diam eter	销轴长度 Pi length	链板高度 Plte depth	链板厚度 Phte thickness	抗拉强度 Tensile strength	平均抗拉强度 Average tensile treng th	每米重量 Weight per m eter
				b1 mn	d2 max	L m ax	h2 m ax	t/T m ax	Q. mn	Q0	q
	mm	mm	mm	mm	mm	mm	mm	mm	kN/bf	kN	kg/m
P95	95	50.8	58	30	13.5	70	38	6	75.0/16871	82.5	9.93
P100F225-G4	100	40	-	22	11.3	53.5	32	4.5	69.0/15511	75.9	5
P100F269-G4	100	48.5	-	57.6	25.4	120	75	10	550.0/123640	605	31.1
P125F61-G4	125	63.5	-	67.4	32	141	90	12	750.0/168600	825	47
P125F62-G4	125	70	-	75	36	168	100	16	1000.0/224800	1100	68.6
P150F142-G4	150	78	-	80	39	172	120	16	1350.0/303480	1485	78.9
RF10150RF1	150	50	60	30	14.5	69	38.1	8.0/6.3	200.0/44992	220	8.64
P150F47	150	54	-	40	27	112	68.5	12	600.0/67487	680	25.7
RF10150RF1-G4	150	29	-	30	14.5	69	38.1	6.3	200.0/44960	220	16.7
P152F41	152.4	38.1	-	36	15.5	90	50	8	150.0/33743	165	11.91
P152F236-G4	152.4	36	-	36.5	18	87	50	8	280.0/62944	308	12.1
RF17200M F1-G-4	200	44.5	-	51.4	19.1	120	60	10	245.0/55114	269.5	17.6
RF17200M F2-G-4	200	44.5	-	51.4	19.1	109.5	50.8	9.5	213.0/47916	243	15.1
P200F128-G4	200	50.8	-	56.6	24	120	70	9.5	450.0/101164	490	19.4
P200F130-G4	200	44.5	-	51.8	19.1	113	60	10	321.0/72164	353.1	17.8
P250F6	250	63.5	-	67	31.8	146	90	12	900.0/101230	495	31.7
P250F66	250	80	-	67	19.1	109.5	50.8	9.5	329.0/73962	378	19.79
P250F71SS	250	100	125	79	22	120	64	10	320.0/71939	368	29.8
P250F87-G4	250	80	-	51.4	22	109	50.8	9.5	329.0/73959	361.9	19.6
P250F110-G4	250	80	105	51.5	19.1	110	50	9	356.4/80119	392	18.3
P250F163	250	70	-	76	35	165	100	16	1100.0/247280	1210	44.1
P300F1	300	70	-	75	35	174	100	16	1065.0/239580	1118	47.47
P350F2-G4	350	85	-	85	41.75	189.5	115	16	1200.0/269772	1372	48.43

Understanding how a hydraulic cylinder works is essential in numerous fields, from heavy machinery and automotive industries to civil engineering and beyond. A hydraulic cylinder is a pivotal component in many mechanical systems, playing a key role in creating linear motion and force through the use of pressurized hydraulic fluid.

Introduction to Hydraulic Cylinders

Hydraulic cylinders are mechanical actuators that provide unidirectional force through a unidirectional stroke. They are fundamentally different from pneumatic cylinders that use compressed gas, as hydraulic cylinders utilize liquid fluid power to perform work.

Basic Components of a Hydraulic Cylinder

1. Cylinder Barrel: The main body of the cylinder, which holds the hydraulic fluid.
2. Cylinder Base or Cap: The base of the cylinder which encloses the barrel at one end.
3. Cylinder Head: The end of the cylinder where the piston rod comes out.
4. Piston: A solid component inside the barrel, which is forced to move when hydraulic fluid enters the cylinder.
5. Piston Rod: The rod that extends from the piston outside the cylinder, transferring the motion and force from the piston.
6. Seals: These are used throughout the cylinder to prevent fluid leakage.
7. Rod Gland or Eye: The part where the piston rod exits the cylinder; it often includes a bearing and seals.

How Hydraulic Cylinders Work

The operation of a hydraulic cylinder is based on the simple principle of force being transferred through a fluid. Here’s the step-by-step process:

1. Fluid Enters the Cylinder: Hydraulic fluid is pumped into one side of the cylinder barrel, creating pressure.
2. Piston Movement: This pressure pushes against the piston, creating force.
3. Piston Rod Movement: The force on the piston causes it to move, and this motion is transferred to the piston rod.
4. Performing Work: The movement of the piston rod can then be harnessed to do various mechanical tasks.
5. Return Stroke: The hydraulic fluid is then pumped into the other side of the piston, pushing the piston back to its original position.

Types of Hydraulic Cylinders

Hydraulic cylinders come in various designs, each suited for specific applications:

1. Single-Acting Cylinders: Fluid is applied to only one side of the piston, providing force in one direction only.
2. Double-Acting Cylinders: Fluid can be applied to both sides of the piston for movement in both directions.
3. Telescopic Cylinders: These have sections that extend like a telescope, providing a longer stroke.
4. Tie-Rod Cylinders: These use tie-rods to hold the end caps against the barrel.
5. Welded Rod Cylinders: These have no tie rods and the barrel is welded directly to the end caps.

Applications of Hydraulic Cylinders

Hydraulic cylinders are used in a wide array of applications, due to their ability to exert significant force:

1. Construction Machinery: In excavators, bulldozers, and loaders.
2. Industrial Machinery: In manufacturing presses, packing machines, and CNC machines.
3. Automotive Applications: For lifts and jacks.
4. Aerospace: For landing gear and control surface actuators.
5. Agricultural Equipment: In tractors and harvesting machinery.

Maintenance and Troubleshooting

Proper maintenance is crucial for the longevity and efficient operation of hydraulic cylinders:

1. Regular Inspection: Checking for leaks, rod wear, and seal condition.
2. Proper Lubrication: Ensuring that moving parts are adequately lubricated.
3. Avoiding Contamination: Keeping the hydraulic fluid clean is crucial.
4. Troubleshooting Common Issues: Identifying and addressing issues like drifting, inconsistent speed, and leakage.

Hydraulic cylinders are fundamental components that convert hydraulic energy into mechanical energy, providing the force and motion needed in many types of machinery. Understanding how they work, their types, and applications is essential for anyone involved in industries where hydraulic systems are prevalent. Regular maintenance and understanding of common issues can greatly extend the life and improve the performance of hydraulic cylinders.