1. Controllable Gas Springs KF2

2. Step 1 Forming + ? Step 2 Piercing Flanging + ? Step 3 Trimming + ? Add functionality Increase production rates Reduce tooling costs Controllable Gas Springs KF2

3. Lockable piston rod True nitrogen gas spring Pneumatically operated Compact self contained design PED approved Advantages

4. Controllable Gas Springs KF2 KF2 gas springs are lockable at press BDC Press KF 2 Time Stroke

5. Controllable Gas Springs KF2 Function

6. Controllable Gas Springs KF2 Piston rod Tube & guide Sealed piston & check valves Pneumatic valve (NO) Central piston rod Lower gas chamber Upper gas chamber Function

7. Controllable Gas Springs KF2 Application type: Dual forming Panel: door inner Drawing operation Combines two forming operations into one tool Function within the tool, not the press Single action press instead of double action press Lowers overall tooling costs

8. Application type: Dual depth forming Controllable Gas Springs KF2 Panel: door inner Blank holder KF2

9. Controllable Gas Springs KF2 Application type: Improve part quality Panel: rear quarter Baby spring pad C post Rear quarter window Rear passenger window

10. Application type: Improve part quality Controllable Gas Springs KF2 Panel: tailgate inner Critical areas requiring additional spring pad force control Solution: individual baby spring pads Baby spring pad supported by KF2

11. Controllable Gas Springs KF2 Product Range Standard Lock Positive Lock Press Spring Time Stroke Max 1mm springback Max 0 mm springback KF2 or KF2-A

12. Controllable Gas Springs KF2 Models KP Passive KF2 active gas springs: Fixed stroke lengths: 10 to 160 mm KF2-A gas springs: Adjustable from +7mm to – 8mm

13. Spacers 1mm 2mm 4mm 8mm Controllable Gas Springs KF2 How to adjust the stroke length of a KF2-A KF2-A 1500-040 Nominal stroke 40 mm

14. Controllable Gas Springs KF2 Accessories Valve Block with Control Block function Mechanical pressure switch Inbuilt mechanical control Upper die Liquid cooler unit NC cooler unit

15. Work cycle for lockable gas springs Stroke Energy KF2TU Heat Controllable Gas Springs KF2 Heat Generation Work cycle for standard gas springs Force Energy = Force x Stroke

16. Controllable Gas Springs KF2 Cooling & Heat Factor Reduction KF2 model Heat Factor = No Cooling Required = Liquid Cooling Range = Nitrogen Cooling Range To reduce Heat Factor: Add more KF2 springs & reduce overall gas charge pressure Increase KF2 model size and decrease gas charge pressure Reduce press cycle frequency Heat Factor = Stroke Length x Frequency

17. 5% to tool 84% to liquid Cooler Unit 16% to tool Controllable Gas Springs KF2 Heat Removal Liquid Cooling: KF2-CJ connected to liquid Cooler Unit via cooling jacket Nitrogen Cooling: KF2-NC connected to Nitro Cooler via control valve 95% to Nitro Cooler

18. Heat Removal Liquid Cooling: 10 kW or 25 kW cooling capacity Increases SPM up to 400% Requires 380V AC power supply Controllable Gas Springs KF2 Nitrogen Cooling: 1.5 kW cooling capacity Increases SPM up to 500% Requires 24V DC power supply Nitro Cooler KF2 Cooler Unit KF2

19. Service & Maintenance Controllable Gas Springs KF2 KF2 contain: over 40 different components, over 25 individual o-rings, 1000 Nm torque set threaded base Therefore: Service & Maintenance only carried out by selected KALLER partners. Note: For emergencies, full replacements are available within 24 hrs World Wide.

20. Approved KF2 Service Partners Controllable Gas Springs KF2 Europe: Fibro GmbH North America: KALLER US Global: Strömsholmen AB South America: Arcinco China: KALLER China

21. Step 1 Forming + ? Step 2 Piercing Flanging + ? Step 3 Trimming + ? Add functionality Increase production rates Reduce tooling costs Controllable Gas Springs KF2