# AD Series Adjustable Hydraulic Shock Absorber

Date: 2026-10-30
Categories: Pneumatic Vibrator
URL: https://homipneu.com/ad-series-adjustable-hydraulic-shock-absorber.html

## Product Summary

HOMIPNEU AD series adjustable hydraulic shock absorbers provide tunable damping for controlled industrial stopping. With strokes from 10 to 150 mm and multiple threaded body sizes, the range supports selection for assembly, packaging and material handling equipment. Match each model to impact energy, speed and cycle rate. OEM & ODM support is available.

### Specifications

The HOMIPNEU AD series provides adjustable hydraulic damping for controlled deceleration of moving machine components. Models range from compact threaded units to larger shock absorbers for higher impact energy requirements.

Parameter
Specification

Product Name
AD Series Adjustable Hydraulic Shock Absorber

Brand
HOMIPNEU

Damping Type
Manually adjustable hydraulic damping

Adjustment Scale
0–8

Adjustment Direction
Clockwise or counterclockwise, as described in the adjustment instructions

Stroke Range
10–150 mm, depending on model

Maximum Energy per Cycle
20–5,540 J, depending on model

Maximum Energy per Hour
25,000–244,000 J/h, depending on model

Metric Mounting Threads
M14 × 1.5, M20 × 1.5, M25 × 1.5, M36 × 1.5, M42 × 1.5

AD64 Series Mounting Thread
2½″–12 UNF, as listed in the dimension table

Operating Temperature
−10°C to +80°C for models with a published temperature rating; confirm AD2550 and AD2580 separately

Cap Options
With-cap and without-cap versions for selected models

Without-Cap Identification
-N suffix on the models identified in the dimension tables

Energy is expressed in joules: 1 J = 1 N·m. The effective mass and impact velocity limits must be checked together with energy per cycle and energy per hour; their maximum values should not be assumed to apply simultaneously.

### Model Selection and Dimensions — AD14, AD20 and Selected AD25 Models

![AD1410 AD1412 AD1416 AD2016 AD2020 AD2025 AD2525 AD2530 dimensions](https://homipneu.com/wp-content/uploads/2026/10/20261030114458863802-900x649.webp)

Model Without Cap
Model With Cap
MM
L (mm)
B (mm)
C (mm)
D (mm)
A (mm)
E (mm)
F (mm)
H (mm)
I (mm)
J (mm)

AD1410-N
AD1410
M14 × 1.5
89
79
65
4
101
15
12
19
6
21.6

AD1412-N
AD1412
M14 × 1.5
91
79
65
4
103
15
12
19
6
21.6

AD1416-N
AD1416
M14 × 1.5
104
88
72
4
116
15
12
19
6
21.6

AD2016-N
AD2016
M20 × 1.5
131
115
101
6
146
17
12
26
8
29.7

AD2020-N
AD2020
M20 × 1.5
135
115
101
6
150
17
12
26
8
29.7

AD2025-N
AD2025
M20 × 1.5
150
125
111
6
165
17
17.8
26
8
29.7

AD2525-N
AD2525
M25 × 1.5
143.5
118.5
101
8
164.2
20.7
22
32
10
36.7

AD2530-N
AD2530
M25 × 1.5
148.5
118.5
101
8
169.2
20.7
22
32
10
36.7

 

Model
Stroke (mm)
Max. Energy Per Cycle (Nm)
Max. Energy Per Hour (Nm)
Max. Effective Weight (kg)
Max. Impact Speed (m/s)
Working Temperature (°C)

AD1410-N
10
20
25000
80
3.0
-10 to +80

AD1410
10
20
25000
80
3.0
-10 to +80

AD1412-N
12
20
26000
90
3.0
-10 to +80

AD1412
12
20
26000
90
3.0
-10 to +80

AD1416-N
16
22
27000
120
3.0
-10 to +80

AD1416
16
22
27000
120
3.0
-10 to +80

AD2016-N
16
25
28500
200
3.5
-10 to +80

AD2016
16
25
28500
200
3.5
-10 to +80

AD2020-N
20
30
30000
250
3.5
-10 to +80

AD2020
20
30
30000
250
3.5
-10 to +80

AD2025-N
25
35
30000
300
3.5
-10 to +80

AD2025
25
35
30000
300
3.5
-10 to +80

AD2525-N
25
75
54000
400
3.5
-10 to +80

AD2525-2
25
75
54000
400
3.5
-10 to +80

AD2530-N
30
86
60000
480
3.5
-10 to +80

AD2530
30
86
60000
480
3.5
-10 to +80

### Model Selection and Dimensions — AD2550 and AD2580

![AD2550 and AD2580 adjustable hydraulic shock absorber dimensions](https://homipneu.com/wp-content/uploads/2026/10/20261030115328432778-900x398.webp)

Model
MM
A (mm)
B (mm)
C (mm)
D (mm)
E (mm)
F (mm)
H (mm)
I (mm)
J (mm)

AD2550
M25 × 1.5
248.2
177.5
100
8
20.7
22
32
10
36.7

AD2580
M25 × 1.5
344.7
244
100
8
20.7
22
32
10
36.7

 

Model
Stroke (mm)
Max. Energy Per Cycle (Nm)
Max. Energy Per Hour (Nm)
Effective Weight (kg)
Max. Impact Speed (m/s)

AD2550
50
98
90000
720
4.0

AD2580
80
150
120000
800
4.0

### Model Selection and Dimensions — AD2540, AD3625 and AD3650

![AD2540 AD3625 AD3650 hydraulic shock absorber dimension drawing](https://homipneu.com/wp-content/uploads/2026/10/20261030115717265034-900x556.webp)

Model
MM
A (mm)
B (mm)
C (mm)
D (mm)
E (mm)
F (mm)
G (mm)
H (mm)
I (mm)
J (mm)

AD2540
M25 × 1.5
220.5
144.5
111
8
36.6
22
10
32
10
36.7

AD3625
M36 × 1.5
183.8
133
103
10
25.8
35
10
46
10
53

AD3650
M36 × 1.5
246.8
171
134
10
25.8
35
17
46
15
53

 

Model
Stroke (mm)
Max. Energy Per Cycle (Nm)
Max. Energy Per Hour (Nm)
Max. Effective Weight (kg)
Max. Impact Speed (m/s)
Working Temperature (°C)

AD2540
40
100
85000
700
3.6
-10 to +80

AD3625
25
150
95000
1400
3.2
-10 to +80

AD3650
50
300
110000
1400
3.2
-10 to +80

### Model Selection and Dimensions — AD42 Models

![AD4225 AD4250 AD4275 industrial shock absorber dimensions](https://homipneu.com/wp-content/uploads/2026/10/20261030120029876026-900x301.webp)

Model
MM
A (mm)
B (mm)
C (mm)
D (mm)
E (mm)
F (mm)
G (mm)
H (mm)
I (mm)
J (mm)

AD4225
M42 × 1.5
186.5
127.5
88
12
34
44.5
28.5
50
15
58

AD4250
M42 × 1.5
241
157
117.5
12
34
44.5
28.5
50
15
58

AD4275
M42 × 1.5
301.5
187.5
148
12
34
44.5
28.5
50
15
58

### Model Selection and Dimensions — AD64 Models

![AD64050 AD64100 AD64150 heavy-duty hydraulic shock absorber dimensions](https://homipneu.com/wp-content/uploads/2026/10/20261030120300070965-900x338.webp)

Model
MM
A
B
C
D
E
F
G
H
I

AD64050
UNF2 1/2–12
247.8
146
26
20
51.8
59
23
Φ76.2
9.4

AD64100
UNF2 1/2–12
347.8
196
26
20
51.8
59
23
Φ76.2
9.4

AD64150
UNF2 1/2–12
467.8
256
26
20
61.8
59
23
Φ76.2
9.4

 

Model
Stroke (mm)
Max. Energy Per Cycle (Nm)
Max. Energy Per Hour (Nm)
Effective Weight (kg)
Max. Impact Speed (m/s)
Working Temperature (°C)

AD4225
25
250
128000
2000
3.5
−10 to +80

AD4250
50
500
150000
4000
4.5
−10 to +80

AD4275
75
750
175000
6000
4.5
−10 to +80

AD64050
50
1850
185000
12500
4.0
−10 to +80

AD64100
100
3690
204000
18500
4.0
−10 to +80

AD64150
150
5540
244000
25000
4.0
−10 to +80

All linear dimensions are in millimeters. Refer to the corresponding drawing for dimension references and confirm the complete model before ordering.

### Product Features

**Adjustable Hydraulic Damping**

The damping setting can be adjusted to suit the application’s impact conditions. This allows the stopping response to be tuned during machine commissioning within the selected model’s operating limits.

**Clearly Marked Adjustment Scale**

The published adjustment instructions identify position 0 as the minimum setting and position 8 as the maximum setting. Adjustment changes the damping response; it does not increase the unit’s rated energy capacity.

**Wide Range of Strokes and Capacities**

Strokes from 10 to 150 mm and energy ratings up to 5,540 J per cycle provide options for compact automation mechanisms and larger industrial loads.

**Piston Rod and Sealing Design**

The piston rod and sealing arrangement are designed to limit oil leakage and support consistent hydraulic damping during repeated operation.

**Wear- and Corrosion-Resistant Body Treatment**

The outer body receives a surface treatment intended to improve resistance to wear and corrosion in industrial environments.

**Threaded Body for Mounting**

External threads support installation in suitable mounting brackets or threaded holes. The threaded surface also increases the exposed area available for heat dissipation.

**Cap Options for Selected Models**

Selected AD14, AD20 and AD25 models are listed with and without a cap, allowing the contact arrangement to be matched to the installation.

### Applications

**Automated Assembly Equipment**

Helps cushion moving slides, transfer mechanisms and positioning fixtures as they approach a defined stopping point.

**Packaging Machinery**

Provides adjustable impact control for reciprocating handling and transfer mechanisms. Selection must account for the number of impacts per hour.

**Material Handling Systems**

Suitable for evaluating controlled stopping of moving carriers, workpiece transfer devices and industrial handling assemblies.

**Pneumatic Cylinder Mechanisms**

Provides external hydraulic buffering where the machine requires additional impact absorption. Include cylinder thrust acting during the stopping stroke when calculating the load.

**Machine Tool Automation**

Can be integrated into loading, unloading and auxiliary positioning mechanisms requiring controlled deceleration.

**Higher-Energy Industrial Mechanisms**

The larger AD42 and AD64 models offer higher published energy capacities for applications that exceed the ratings of compact shock absorbers.

### Why Choose HOMIPNEU

**Models for Different Machine Sizes**

The AD range covers multiple strokes, thread sizes and energy capacities, helping machinery builders compare suitable options within one product series.

**Application-Based Selection**

Provide the moving mass, impact velocity, driving force, cycle rate and available stopping distance so the proposed model can be checked against the operating conditions.

**Detailed Installation Information**

Model-specific drawings and dimension tables help engineers review mounting space, thread requirements and contact clearances before ordering.

**Related Automation Components**

HOMIPNEU also supplies pneumatic cylinders, solenoid valves, fittings and tubing for buyers sourcing components for complete automation assemblies.

### FAQ

**What is an adjustable hydraulic shock absorber?**

An adjustable hydraulic shock absorber uses hydraulic resistance to absorb impact energy and decelerate a moving load. Its damping setting can be changed to suit the application within the model’s rated operating range.

**How is the AD series different from the AC series?**

The AD series provides manual damping adjustment. The AC series uses self-compensating damping within a specified range of operating conditions. Select the type according to the required stopping response and application conditions.

**How do I adjust the damping?**

The published instructions describe a rotary adjustment scale from 0 to 8, with 0 as the minimum setting and 8 as the maximum setting. Follow the instructions supplied with the exact model and check the stopping response during commissioning.

**Does a higher adjustment setting increase the energy rating?**

No. Adjustment changes the damping response. Energy per cycle, energy per hour, effective mass and impact velocity must remain within the selected model’s published limits.

**How do I select the correct AD model?**

Check the total energy per impact, impacts per hour, effective mass, impact velocity, required stroke and installation dimensions. Include any driving force that continues to act during deceleration.

**Can the maximum mass operate at the maximum listed speed?**

Not necessarily. The resulting energy must also stay within the allowable per-cycle capacity. Maximum mass and maximum speed are separate limits rather than a guaranteed operating combination.

**What does the -N suffix mean?**

For models identified in the cap-option dimension table, -N indicates the version without a cap. Confirm the complete model designation and matching drawing before ordering.

**Does the AD shock absorber require compressed air?**

No compressed air supply is required for its hydraulic damping function. It can be installed alongside pneumatically driven machinery.

**Why must hourly energy absorption be checked?**

Repeated impacts generate heat. A unit may remain below its per-cycle energy limit while exceeding its allowable hourly energy load at a high cycle rate.

### OEM & ODM Support

HOMIPNEU accepts OEM & ODM inquiries for AD series adjustable hydraulic shock absorbers, including product identification, packaging and application-specific configuration requirements.

Please provide the required model or installation drawing, moving mass, impact velocity, driving force, operating frequency, temperature conditions and expected order quantity. Customization requests are subject to technical review and confirmation.