# ACD Series Bidirectional Self-Compensating Hydraulic Shock Absorber Date: 2026-10-30 Categories: Pneumatic Vibrator URL: https://homipneu.com/acd-series-bidirectional-self-compensating-hydraulic-shock-absorber.html ## Product Summary HOMIPNEU ACD series bidirectional self-compensating hydraulic shock absorbers help control impact in reciprocating automation mechanisms. Available in 30, 35 and 50 mm strokes with M20 × 1.5 threads, the range offers multiple performance variants for different effective masses and impact speeds. OEM & ODM support is available for project requirements. ### Specifications The HOMIPNEU ACD series is designed for bidirectional hydraulic impact absorption in automation equipment. Three base models and multiple performance variants allow selection according to stroke, effective mass, impact velocity and operating frequency. Parameter Specification Product Name ACD Series Bidirectional Self-Compensating Hydraulic Shock Absorber Brand HOMIPNEU Base Models ACD2030, ACD2035, ACD2050 Damping Type Self-compensating hydraulic damping Buffering Direction Bidirectional Stroke Options 30 mm, 35 mm, 50 mm Mounting Thread M20 × 1.5 Maximum Energy per Cycle 48–60 J, depending on model Performance Variants -1, -2 and -3 Operating Temperature −10°C to +80°C Typical Use Impact absorption in reciprocating mechanisms and automation equipment ### Model Selection and Dimensions ![ACD2030 ACD2035 ACD2050 hydraulic shock absorber dimension drawing](https://homipneu.com/wp-content/uploads/2026/10/20261030003621267531-900x497.webp) Model MM A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) G (mm) H (mm) I (mm) J (mm) ACD2030 M20 × 1.5 189 123 44 6 18 18 3 26 8 29.7 ACD2035 M20 × 1.5 223 123 44 6 15 18 3 26 8 29.7 ACD2050 M20 × 1.5 276 145 134 6 15 18 5 26 8 29.7 Select the complete model designation before ordering. Confirm the required damping direction, installation clearance, contact arrangement and operating conditions against the matching drawing and performance ratings. **Performance Specifications** 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) ACD2030-1 30 48 48000 40 3.6 -10 to +80 ACD2030-2 30 48 84000 300 2 -10 to +80 ACD2030-3 30 48 48000 800 1 -10 to +80 ACD2035-1 35 55 55000 40 3.6 -10 to +80 ACD2035-2 35 55 55000 200 2 -10 to +80 ACD2035-3 35 55 55000 650 1 -10 to +80 ACD2050-1 50 60 68000 60 3.6 -10 to +80 ACD2050-2 50 60 68000 200 2 -10 to +80 ACD2050-3 50 60 68000 480 1 -10 to +80 Energy values are expressed in joules: 1 J = 1 N·m. Maximum effective mass and maximum impact velocity are separate selection limits and should not be assumed to apply simultaneously. ### Product Features **Bidirectional Impact Absorption** The ACD series provides hydraulic buffering for mechanisms requiring impact control in two directions. The installation arrangement must allow the intended motion to act along the shock absorber axis. **Self-Compensating Hydraulic Damping** Self-compensating operation accommodates changing impact conditions within the selected model’s rated operating range, without requiring a manual damping setting for each impact. **Three Stroke Options** Available strokes of 30, 35 and 50 mm support different stopping distances and machine layouts. Select the stroke together with the required energy absorption capacity. **M20 × 1.5 Threaded Body** All three base models feature an M20 × 1.5 mounting thread. Model-specific overall dimensions allow engineers to check mounting space before installation. **Multiple Performance Variants** The -1, -2 and -3 versions provide different effective mass and impact velocity ratings. This helps match the shock absorber to the actual moving load and speed. **Reduced Mechanical Impact** Controlled hydraulic deceleration helps reduce sudden impact transmitted to machine stops, fixtures and supporting structures when the unit is correctly selected and installed. ### Applications **Reciprocating Automation Mechanisms** Suitable for evaluating impact absorption in mechanisms that move repeatedly between two positions and require buffering in both directions. **Automated Assembly Equipment** Helps cushion transfer slides, positioning mechanisms and moving fixtures as they approach designated stopping points. **Packaging Machinery** Supports impact control in reciprocating transfer and positioning assemblies, subject to the selected model’s energy and cycle ratings. **Material Handling Equipment** Can be incorporated into moving carriers and handling mechanisms where controlled deceleration is required. **Pneumatically Driven Mechanisms** Provides external hydraulic buffering for suitable pneumatic motion systems. Selection must include any cylinder thrust acting during the stopping stroke. **Special-Purpose Machinery** Offers a threaded hydraulic damping option for equipment with defined bidirectional stopping requirements and limited installation space. ### Why Choose HOMIPNEU **Clear Model Comparison** Published performance and dimension tables help buyers compare ACD2030, ACD2035 and ACD2050 models before ordering. **Application-Based Selection** Share the moving mass, impact velocity, driving force, cycle rate and installation drawing so the proposed model can be evaluated against the operating requirements. **Multiple Performance Options** Different stroke lengths and performance variants support selection for a range of automation mechanisms. **Broader Component Sourcing** HOMIPNEU also supplies pneumatic cylinders, solenoid valves, fittings and tubing for machinery builders sourcing related automation components. ### FAQ **What is an ACD bidirectional hydraulic shock absorber?** It is an industrial hydraulic damping component designed to absorb impact energy in two directions. Correct installation depends on the mechanism’s motion and the shock absorber’s contact arrangement. **What does self-compensating mean?** It means the hydraulic damping system accommodates a defined range of impact conditions without manual adjustment for each impact. The selected unit must still operate within its specified energy, effective mass and velocity limits. **What is the difference between ACD2030, ACD2035 and ACD2050?** Their listed strokes are 30, 35 and 50 mm, respectively. They also have different energy ratings and installation dimensions, so selection should consider more than stroke alone. **What is the difference between the -1, -2 and -3 versions?** These versions have different effective mass and impact velocity ratings. Check the full model designation against the performance table to select the appropriate version. **Can the maximum effective mass operate at the maximum impact velocity?** Not necessarily. Both values are selection limits, and the resulting impact energy must remain within the model’s allowable capacity. Include any additional work performed by the driving force during deceleration. **How do I check the hourly energy requirement?** Multiply the energy absorbed per impact by the number of impacts per hour. For bidirectional operation, include the impacts occurring in both directions and confirm how the manufacturer applies the published rating. **Does the shock absorber require compressed air?** No compressed air connection is required for its hydraulic damping function. It can be used alongside pneumatically driven equipment. **What information should I provide when requesting a model recommendation?** Provide the moving mass, impact velocity in each direction, driving force, impacts per hour, available stopping distance, operating temperature and installation drawing. ### OEM & ODM Support HOMIPNEU accepts OEM & ODM inquiries for ACD series bidirectional hydraulic shock absorbers, including product identification, packaging and application-specific requirements. Please provide the required model, operating conditions, installation dimensions, expected order quantity and any special requirements. Configuration changes and customization requests are subject to technical review and confirmation.