CFMR. Spring hinges for automatic return, SUPER-technopolymer


  • SUPER_TEC
  • RoHS
  • PA
  • g6020

Description

Main specifications

Material

Glass-fibre reinforced polyamide (PA) SUPER-technopolymer body, black colour, matte finish.

Rotating pin

Aluminium.
Pin housing end caps made out of acetal based (POM) technopolymer, black colour.

Return spring

Stainless steel.

Standard executions

Pass-through holes for M6 cylindrical head screws.
  • CFMR-NC-035: max return torque 0.35Nm (at 180°), holding torque 0.12Nm (at 0°).
  • CFMR-NC-070: max return torque 0.70Nm (at 180°),, holding torque 0.25Nm (at 0°).
  • CFMR-NO-035: max return torque 0.35Nm (at 0°), holding torque 0.12Nm (at 180°).
  • CFMR-NO-070: max return torque 0.70Nm (at 0°), holding torque 0.25Nm (at 180°).
  • CFMR-NS: complementary hinge, no return spring.

General information

Rotation angle (approximate value)

Max 270° (-90° and +180° being 0° the condition where the two interconnected surfaces are on the same plane).
The hinge can reach -90 ° but this condition must not be used for CFMR-NO execution.
Do not exceed the rotation limit angle so as not to prejudice the correct operation of the return spring.
To choose the convenient type and the right number of hinges for your application, see the Guidelines.

Features and performances

CFMR hinge is used for the automatic re-closing or re-opening of the door by the return spring.
The torque varies progressively with the opening/closing angle of the hinge.
In special stress resistance tests, the return spring has exceeded 100,000 cycles while keeping the torque values unchanged.

Resistance testsAXIAL STRESSRADIAL STRESS90° ANGLED STRESS
Max limit static load
Sa [N]
Max limit static load
Sr [N]
Max limit static load
S90 [N]
CFMR.210035001900
The max static load is the value above which the material may break thus prejudicing the hinge functionality. Obviously, a suitable factor, according to the importance and the safety level of the specific application must be applied to this value.
Spring hinges for automatic return, SUPER-technopolymer CFMR.
CFMR.
Filter
Code Description L B d1 d2 f f1 H h1 h2 h3 b1 C#
[Nm]
Weight
425841 CFMR.67-NC-035 67 55 6.5 10 48 38 24 12.5 12.5 6.3 12.5 6 67
425845 CFMR.67-NC-070 67 55 6.5 10 48 38 24 12.5 12.5 6.3 12.5 6 67
425852 CFMR.67-NO-035 67 55 6.5 10 48 38 24 12.5 12.5 6.3 12.5 6 67
425855 CFMR.67-NO-070 67 55 6.5 10 48 38 24 12.5 12.5 6.3 12.5 6 67
425840 CFMR.67-NS 67 55 6.5 10 48 38 24 12.5 12.5 6.3 12.5 6 61