Formula symbolsValueUnitDescription
                
                    
                        Material
                        1.4310
                        -
                        Type of material
                    
                
                    
                        Coiling direction
                        Left
                        -
                        Coiling direction
                    
                
                    
                        Leg position
                        180
                        degree
                        Leg position when relaxed
                    
                
                    
                        alpha1
                        
                        degree
                        prestressed rotational angle
                    
                
                    
                        F1
                        
                        N
                        prestressed spring force
                    
                
                    
                        M1
                        
                        Nmm
                        torque by angle alpha1
                    
                
                    
                        alpha2
                        
                        degree
                        loaded rotational angle
                    
                
                    
                        F2
                        
                        N
                        loaded spring force
                    
                
                    
                        M2
                        
                        Nmm
                        torque by angle alpha2
                    
                
                    
                        alphah
                        
                        degree
                        working rotational angle
                    
                
                    
                        d
                        1.25
                        mm
                        Wire diameter
                    
                
                    
                        Di
                        6.75
                        mm
                        inner coil diameter
                    
                
                    
                        Dd
                        
                        mm
                        diameter of mandrel
                    
                
                    
                        LsH
                        
                        mm
                        leg length of the lever leg
                    
                
                    
                        LsR
                        
                        mm
                        leg length of the recumbent leg
                    
                
                    
                        Lk0
                        5.63
                        mm
                        length of spring body
                    
                
                    
                        Ls
                        50
                        mm
                        leg length
                    
                
                    
                        RH
                        
                        mm
                        leverage
                    
                
                    
                        Mntol
                        66.87
                        Nmm
                        (+/-) Tolerance maximum torque
                    
                
                    
                        Mn
                        212.15
                        Nmm
                        maximum torque
                    
                
                    
                        alphan
                        48.29
                        degree
                        maximum rotational angle
                    
                
                    
                        nt
                        3.5
                        pc.
                        total number of coils
                    
                
                    
                        Ddmax
                        6
                        mm
                        maximum possible mandrel diameter
                    
                
                    
                        Ddmin
                        5.4
                        mm
                        Min. possible mandrel diameter
                    
                
                    
                        Ditol
                        0.19
                        mm
                        (+/-) tolerance of inner coil diameter
                    
                
                    
                        Weight
                        1.8186
                        g
                        weight of one spring
                    
                
                    
                        Price group
                        J
                        -
                        price group