Norgren NFPA Aluminum & Steel Cylinders - Manual (Page 12)

ACT-1-12 Brookville, OH USA Phone 937-833-4033 www.norgren.com
Series EA, NFPA Aluminum Air Cylinders (ø1-1/2" to 8"), Impact Dampening Seals
Series EJ, NFPA Steel Air Cylinders (ø1-1/2" to 12"), Impact Dampening Seals
Cylinders with Weight attached Cushion Efficiency Cushioning Bounce Cycles
Cushions to Piston Rod (lbs) (G’s* Created) Time (Ms) During Cushioning
Norgren Ecology
Adjustable
54 5.25 40.00 3.25
Norgren Ecology
Non-Adjustable
54 12.00 28.75 2.75
Competitor A
Adjustable
54 11.50 92.50 6.75
Competitor B
Adjustable
54 8.00 77.50 5.25
Competitor C
Adjustable
54 6.50 67.50 6.25
Cylinders with Weight attached Cushion Efficiency Cushioning Bounce Cycles
Cushions to Piston Rod (lbs) (G’s* Created) Time (Ms) During Cushioning
Norgren Ecology
Adjustable
8.5 14.50 25.00 1.00
Norgren Ecology
Non-Adjustable
8.5 17.50 26.25 1.75
Competitor A
Adjustable
8.5 48.00 107.50 7.25
Competitor B
Adjustable
8.5 32.75 102.50 6.50
Competitor C
Adjustable
8.5 50.50 81.25 9.25
2" Bore Cap End Cushion Test
Average deceleration force = 10 G's
Time consumed during cushioning = 0.020 sec.
Number of bounces:
1 / 2 Pneumatic – 0 Metallic
*Measured in G’s of deceleration force created. All cylinders tested were NFPA types,
front flange mounting, 6" stroke with standard diameter piston rods.
Velocity: 1 div.
= 20 in/sec.
14.5 lbs.
added to rod
Velocity: 1 div.
= 20 in/sec.
14.5 lbs.
added to rod Velocity: 1 div.
= 20 in/sec.
2.5 lbs. added
to rod
Tests by the Milwaukee School of Engineering confirm
Ecology Cylinder Cushions are more efficient, faster acting
and bounce less!
2" Bore Cylinder Tests Results
Figures shown are average and not the result of each individual test. Piston velocity was
regulated at 45 in/sec.
COMPETITIVE CYLINDERS
with Adjustable Cushions
Velocity: 1 div.
= 20 in/sec.
14.5 lbs.
added to rod
Velocity: 1 div.
= 20 in/sec.
14.5 lbs.
added to rod
Acceleration:
1 div. = 10
G’s
X Axis: 1 div.
= .03 seconds Acceleration:
1 div. = 10
G’s
X Axis: 1 div.
= .03 seconds
Acceleration:
1 div. = 10 G’s
X Axis: 1 div. =
.02 seconds Acceleration:
1 div. = 10
G’s
X Axis: 1 div.
= .03 seconds
Velocity: 1 div.
= 20 in/sec.
2.5 lbs.
added to rod
Acceleration:
1 div. = 10
G’s
X Axis: 1 div.
= .03 seconds
NORGREN ECOLOGY CYLINDERS
with Adjustable Cushions NORGREN ECOLOGY CYLINDERS
with Non-Adjustable Cushions
2" Bore Rod End Cushion Test
Average deceleration force = 15 G's
Time consumed during cushioning = 0.030 sec.
Number of bounces: 1 Pneumatic – 1 Metallic
2" Bore Cap End Cushion Test
Average deceleration force = 60 G's
Time consumed during cushioning = 0.120 sec.
Number of bounces: 3 Pneumatic – 4 Metallic
2" Bore Rod End Cushion Test
Average deceleration force = 78 G's
Time consumed during cushioning = 0.120 sec.
Number of bounces: 2 Pneumatic – 4 Metallic 2" Bore Rod End Cushion Test
Average deceleration force = 20 G's
Time consumed during cushioning = 0.015 sec.
Number of bounces:
1 / 2 Pneumatic – 0 Metallic
2" Bore Cap End Cushion Test
Average deceleration force = 17.5 G's
Time consumed during cushioning = 0.025 sec.
Number of bounces: 1 Pneumatic – 1 Metallic
*Measured in G’s of deceleration force created. All cylinders tested were NFPA types,
front flange mounting, 6" stroke with standard diameter piston rods.
4" Bore Cylinder Tests Results
Figures shown are average and not the result of each individual test. Piston velocity was
regulated at 25 in/sec.
Acceleration:
1 div. = 10
G’s
X Axis: 1 div.
= .03 seconds