koba catalog
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8CG5A Best Energy Absorption APPLICATIONS • Pick & place robotics • Glass forming equipments • Plastic bottle making • Electronics / Semiconductor • Automotive robotics & Transfer lines • Assembling conveyors • Material handling • Printing machine • Paper rolls • Packing machinery • Military • Aerospace • Cranes : Bridge & Trolley, Container, Overheads • Steel mills : Slab ingot, Crushing, Turntable • Elevator • Railway : Coupler & Side Buffers, Fixed rail end stop, Friction stop • Automated storage/Retrieved system • Food/ Beverage • Medical / Pharmaceutical equipments • Textile Roiem KIA MOTORS ThyssenKrupp KUMHO TIRES SeAH TATA SIEMENS

Hydraulic Shock Absorbers & Buffers Applications

Working Process Part machining Part Inspection Product Inspection

At a glanceAdjustable type Shock Absorbers - KMA Series Model

At a glanceAdjustable type Shock Absorbers - KSA Series Model Stroke (mm) S

At a glanceHydro-Pneumatic Buffers - KHG Series Max Buffer Force (kN) Fs

At a glanceHydraulic Buffers - KHS Series Model

KCSC Series

At a glance Stacker Crane Buffers - KCSC Series

At a glanceVisco-Elastic Buffer - KES Series Model

Rate Controls - KRC Series Model

At a glance Hydro-Check - KHC Series Max Load Angle From Axis Speed Adjustment Range Load Limits (N) Feed Rate Limits (mm/s)

1. Description -------------------------------------------------------------- (21) 2. Shock Absorber : Structure & Principle of Shock Absorber ------- (22) 3. Shock Absorber Model Selection ------------------------------- (24) 4. Shock Absorber How to Select Shock Absorber ----------------- (27) 5. Shock Absorber Instruction Manual ------------------------------- (35) 6. Shock Absorber KMA Series ------------------------------------------ (40) 7. Shock Absorber KMS Series ------------------------------------------ (53) 8. Shock Absorber KSA Series ------------------------------------------...

Shock Absorbers & Buffers KMA Series - Adjustable shock absorber with adjustment dial of 300 within 12 steps KMS Series - Self - Adjustable series with multiple orifice for soft stop of a broad range of impact mass KSA Series - High energy series for emergency stop as well permanent driven application KHA Series - Mid sized adjustable shock absorber for medium and heavy loads. KHG Series - For heavy duty application.2-step damping unit with special nitrogen gas chamber within the piston rod KHS Series - Small compact heavy duty buffer with customized orifices according application data KCSC...

Hydraulic Shock Absorbers As mechanical parts of operating machinery such as automated assembling systems, conveyors and safty devices for machine tools strive to increase operation speed and precision, more often the results shows increased noise, vibration as well damage to the machinery. To avoid decreasing safty and machine reliability typical products are used include rubber bumper, springs, cylinder cushion and industrial shock absorber. The adventage of using KOBA shock absorber : Longer life cycle of machinery due to reduction of shock and vibration. Higher operating speed - shock...

Hydraulic Shock Absorber 1. Shock Absorber consists of Body, Bumper Head, Piston Rod, Adjustment Dial, Lock Nut. 2. Body available with several thread options. 3. Bumper Head with integrated different cap material for noise reduction. 4. Piston Rod : Hard chrome plated or stainless steel 5. Adjustment Dial for stepless adjustment of damping strength. 6. Lock Nut for easy mounting Adjustment Dial Piston Rod Bumper Head Shock Absorber Internal structure Inside the Shock Absorber consists of Piston, Check Valve, Accumulator, Inner Tube, Multiple Orifice, Return Spring and Oil. As the stroke...

Orifices Feature Single Orifice Single Orifice Type has a dashpot structure with gap between piston and inner tube or one hole. Resistance characteristic is shown as below. The area of the orifice throughout the entire stroke is constant, the resistance increases immediately after the collision, the speed decreases as the stroke progresses, and the resistance at the end becomes smaller. Orifice mass Multiple Orifices ■Adjustable Pressure oil flow controled through several orifice offer linear deceleration by providing a constant shock force over the entire stroke - most efficiency. Multiple...

This is one kind of the non adjustable Multiple orifice types. This type has quick response and good efficiency for short stroke because the changing of orifice area is continuous. Short stroke means under 25mm (but KMS14-20 is not including in this type) Force Metering Orifice Shock Absorber Selection 1. Identification of following parameters : 1.1 Load weight (kg) 2. Steps to select the right Model 2.1 Check the conditions ■ Check how the object will hit the Shock Absorber : Horizontal motion, Vertical motion, Inclined motion, or rotary motion. With or without Propelling force ■ Check the...

2.7 Check the total Energy per hour EtC. ■ Find the Total Energy per hour with cycle per hour and Total Energy per cycle and check it within the range of selected model's in Engineering Data in Catalog. EtC > Et x C 2.8 Check the Effective Weight (We) ■ In the case of collision with Propelling Force, Check the Effective Weight (We). Especially you should check it in the case of low velocity (under 0.3m/s), We = ( 2 x Et ) / V2 [ The Calculated value of We should be within the range decsribed in Engineering Data in catalog.] In the case of collision without propelling force, the Effective...

2.9 Operation temperature ■ Standard ■ For Operation temperature within the range of : -10 ~ 80℃ specific or different ranges please contact out technical customer support team. any case please check our website www.kobapage.com for easy selection or contact our technical customer support. Selection Flow Chart Orientation (horizontal, vertical, etc...) weight, velocity, cycles/hr, force Value of kinetic energy (EK ) Check propelling force Value of propelling force (F) Stroke selection for work energy (EW ) Confirm selected model