Guide rings : Guide rings FT


MIDDLE WEAR RINGS FT-100

 

 

FT WEAR RINGS

  • Polyester resin and fabric wear rings
  • For heavy duty conditions
  • Available in a wide dimensional range, installation in the same housing as for HD Skate in Neuflon-ptfe compound and FR.
  • From preformed tape

    housing for lodging:

  • PISTON guide rings

     
  • ROD guide rings

 

CHARACTERISTIC SPECIFICATION UNIT VALUE
Color     blue
SPECIFIC LOAD  Qs   N.mm-2 75
Compression resistance D695-54 N.mm-2 340
Hardness D2240-74 Rockwell M 100
Friction coefficient     0.2
Max. Speed   m/sec 1
Thermal expansion coefficient D696-70 10-6 / °C 20
Continual operational Temperature   °C 130
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

 

 


PISTON GUIDE RINGS

S
Thickness		 F
groove diameter		 L
groove width		 G
piston-cylinder clearence
  j8 - h8 H11  
 2.5 A - 5 6.3 max S x 0.4
according with the seal adopted
 2.5 8.1
2.5 9.7
2.5 15
2.5 20
2.5 25
2.5 30
2.5 40
4.0 A - 8 25

ROD GUIDE RINGS

S
Thickness		 F
groove diameter		 L
groove width		 G
rod-box clearence
  J8 - H8 H11  
2.5 D + 5 6.3 max S x 0.4
according with the seal adopted
2.5 8.1
2.5 9.7
2.5 15
2.5 20
2.5 25
2.5 30
2.5 40
4.0 D + 8 25

 

PRODUCT CODE

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

FT 115 x 120 x 9,7

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

FT 80 x 85 x 20

 

[Top]