BFA | LONG-STROKE ROLLING DIAPHRAGMS BFA

Back to overview Diaphragm

PRODUCT DESCRIPTION

Long-stroke rolling diaphragms are thin-walled, special sensitive diaphragms made from highly elastic materials with fabric reinforcement. Along with this standard design type BFA, the long-stroke rolling diaphragms can also be supplied made in special tools without fabric, type BFAO.

PRODUCT ADVANTAGES

The small diaphragm thickness and large height of the diaphragm relative to the diameter provide the following advantages:

  • Low, almost constant resistance to movement over the entire stroke
  • Considerably greater stroke lengths in comparison to conventional diaphragms with the same diameter
  • Effective area remains the same over entire stroke
  • No additional resistance to movement on starting or on change in direction of movement; no notch point in operating range
  • Low requirements on piston and cylinder in comparison to lip seals.

Select your filter

polymer
NBR
material
50 NBR 253
brand
Freudenberg
design
BFA

Filtered items for BFA ( 17 hits )

design material Dg Dk H W central hole diameter brand legacy item no. item no. SP | IP    
BFA 50 NBR 253 150 140 120 0.8 0.00000000000 Freudenberg 3701373 37013 Details
BFA 50 NBR 253 140 130 30 0.8 0.00000000000 Freudenberg - 13171 Details
BFA 50 NBR 253 130 120 130 0.8 0.00000000000 Freudenberg - 37780 Details
BFA 50 NBR 253 120 110 25 0.8 0.00000000000 Freudenberg - 36127 Details
BFA 50 NBR 253 100 90 40 0.55 0.00000000000 Freudenberg - 1661 Details
BFA 50 NBR 253 90 80 90 0.55 0.00000000000 Freudenberg - 1798 Details
BFA 50 NBR 253 90 80 70 0.55 0.00000000000 Freudenberg - 38186 Details
BFA 50 NBR 253 80 70 80 0.55 0.00000000000 Freudenberg - 1781 Details
BFA 50 NBR 253 80 70 30 0.55 0.00000000000 Freudenberg 9459812 94598 Details
BFA 50 NBR 253 70 60 55 0.55 0.00000000000 Freudenberg - 110779 Details
BFA 50 NBR 253 60 55 25 0.45 0.00000000000 Freudenberg 5109004617800 2437 Details
BFA 50 NBR 253 50 45 30 0.45 0.00000000000 Freudenberg - 1610 Details
BFA 50 NBR 253 45 40 45 0.45 0.00000000000 Freudenberg 231300 2313 Details
BFA 50 NBR 253 45 40 20 0.45 0.00000000000 Freudenberg 229900 2299 Details
BFA 50 NBR 253 35 30 22 0.45 0.00000000000 Freudenberg 5109004617600 35960 Details
BFA 50 NBR 253 25 20 20 0.45 0.00000000000 Freudenberg - 457 Details
BFA 50 NBR 253 20 15 20 0.45 0.00000000000 Freudenberg - 35842 Details