Guide rings : Guide rings FR


MIDDLE FR-062   WEAR RINGS

 


FR WEAR RINGS

  • Heavy duty conditions
    Installed in the same housing as for Neuflon-ptfe tape

    housing for lodging:

  • PISTON guide rings

  • ROD guide rings

 

CHARACTERISTIC SPECIFICATION UNIT VALUE
Color     brown-yellow
SPECIFIC LOAD  Qs   N.mm-2 50
Compression resistance D695-54 N.mm-2 150
Compression modulus D695-54 N.mm-2 6000
Hardness D2240-74 Rockwell F 60
Friction coefficient     0.25
Max. Speed   m/sec 1
Thermal expansion coefficient D696-70 10-6¨°C-1 20
Continual operational Temperature   °C 120
Peak temperature   °C 150
Flammability D635-68   self extinguisching

 

 

COMPARISION OF THE LOAD CAPACITY OF GUIDE RINGS IN   FT-100  FR-062  N-031
Cylinder bore D = 100
Guide ring width   L = 9,7
Guide ring  95 x 100 x 9,7

Load capacity in Kg = D x 0.05 x L x Qs
Max.specific load Qs (N/mm2)
FT-100 = 75
FR-062 = 50
N-071   = 2,5		 Load capacity Kg
3637
2425
121

 
Up to the diameter 200 mm  FR Wear Rings are produced from turned tubes, larger diameters are supplied from pre formed calibrated tape.

 

PISTON GUIDE RINGS

S
Thickness		 F
groove diameter		 L
groove width		 G
piston-cylinder clearence
  j8 - h8 H11 max S x 0.4
2.5 A - 5 6.3 choice depends on
 the seal adopted
2.5 8.1
2.5 9.7
2.5 15
2.5 20
2.5 25
2.5 30

ROD GUIDE RINGS

S
Thickness		 F
Groove diameter		 L
Groove width		 G
Rod-Box clearence
  J8 - H8 H11 max S x 0.4
2.5 D + 5 6.3 dipends from the seal
2.5 8.1
2.5 9.7
2.5 15
2.5 20
2.5 25
2.5 30

 

 

PRODUCT CODE

FR guide rings are codified in accordance with the dimensions of the groove
Example:
FR piston guide ring
Cylinder bore 120
Groove width 9,7     radial thickness 2,5 

FR 115 x 120 x 9,7

 Example:
FR rod guide ring
Rod diameter   80
Groove width 9,7     radial thickness 2,5 

FR 80 x 85 x 20

 

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