SPRINGS-POL - Torsion springs

Torsion springs

The torsion springs are the speciality of firm. We produce ddifferent lengths of springs to L = 5000 mm. In our firm we trat every customer severally. We are ready to fulfil your every wish regarding the production of springs from wires to 12mm.
The table shows the standard dimensions of springs.

The exemplary signs of springs:
VL 5,5 x51x3250 GS (VL - the left-roll spring, VR - the right-roll spring ), d = 5,5 - the diameter of wire, Dw = 51 - inside diameter of spring, L = 3250 - the length of spring in millimetres GS - spring from galvanized wire, NS - spring from phosphate wire

Size	Spring d×Dw×L	Wire d	Diameter internal Dw mm	Torsion of spring right/left	Kind of wire: galvanize / phosphate	Weight mb kg	Length L max mm	Weight L kg
51	5,0x51xL	5,0	51	VR / VL	GS / NS	5,4	5000	27,0
	5,5x51xL	5,5	51	VR / VL	GS / NS	6,0	5000	30,0
	6,0x51xL	6,0	51	VR / VL	GS / NS	6,5	5000	32,5
	6,5x51xL	6,5	51	VR / VL	GS / NS	7,2	5000	36,2
67	6,0x67xL	6,0	67	VR / VL	GS / NS	8,5	5000	42,5
	6,5x67xL	6,5	67	VR / VL	GS / NS	9,3	5000	46,5
	7,0x67xL	7,0	67	VR / VL	GS / NS	10,0	5000	50,0
	7,5x67xL	7,5	67	VR / VL	GS / NS	10,8	5000	54,0
95	6,5x95xL	6,5	95	VR / VL	GS / NS	12,8	5000	64,0
	7,0x95xL	7,0	95	VR / VL	GS / NS	13,8	5000	69,0
	7,5x95xL	7,5	95	VR / VL	GS / NS	14,9	5000	74,5
	8,0x95xL	8,0	95	VR / VL	GS / NS	16,0	5000	80,0
	8,5x95xL	8,5	95	VR / VL	GS / NS	17,0	5000	85,0
	9,0x95xL	9,0	95	VR / VL	GS / NS	18,1	5000	90,5
	9,5x95xL	9,5	95	VR / VL	GS / NS	19,8	5000	99,0
133	8,0x133xL	8,0	133	VR / VL	GS / NS	21,8	3500	76,3
	8,5x133xL	8,5	133	VR / VL	GS / NS	23,3	3500	81,6
	9,0x133xL	9,0	133	VR / VL	GS / NS	24,7	3500	86,5
	9,5x133xL	9,5	133	VR / VL	GS / NS	26,6	3500	93,1
	10,0x133xL	10,0	133	VR / VL	GS / NS	27,7	3500	97,0
152	7,5x152xL	7,5	152	VR / VL	GS / NS	23,1	3500	80,9
	8,0x152xL	8,0	152	VR / VL	GS / NS	25,0	3500	87,5
	8,5x152xL	8,5	152	VR / VL	GS / NS	26,4	3500	92,4
	9,0x152xL	9,0	152	VR / VL	GS / NS	28,0	3500	98,0
	9,5x152xL	9,5	152	VR / VL	GS / NS	29,6	3500	103,6
	10,0x152xL	10,0	152	VR / VL	GS / NS	31,3	3500	109,6
	10,5x152xL	10,5	152	VR / VL	GS / NS	33,0	3500	115,5
	11,0x152xL	11,0	152	VR / VL	GS / NS	34,7	3500	121,5
	11,5x152xL	11,5	152	VR / VL	GS / NS	36,4	3500	127,4

Physical characteristics of springs

d (wire diameter): This parameter describes the diameter of wire used as material for spring.
Dd (Shaft): This parameter describes maximal diameter of spring shaft in industrial applications.Tolerance for this parameter is (+-) 2% (indicative).
Di (internal diameter): Internal diameter of a spring. It can be calculated by subtracting the wire diameter multiplied by 2 from the external diameter of a spring. Internal diameter in torsion springs decreases while the spring is working even up to shaft diameter. Tolerance for this parameter is (+-)2%(indicative).
De (external diameter): External diameter of a spring. It can be calculated by adding the wire diameter multiplied by 2 to the internal diameter of a spring. External diameter in torsion springs decrease while the spring is working. Tolerance for this parameter is (+-) 2% with tolerance (+-) 0.1 mm
L0 (Free Length): WARNING: Free Length decrease while spring is working. Tolerance for this parameter is (+-) 2% (indicative).
Ls (Leg Length): It is the distance from the center axis of the coil body to the end of the torsion springs' leg. Tolerance for this parameter is (+-)2%(indicative).
An (Maximum angle): Maximum acceptable rotation angle for the spring in degrees. Tolerance for this parameter is (+-) 15 degrees (indicative).
Fn (Maximum force): Maximum acceptable force that can operate at the end of torsion springs' leg. Tolerance for this parameter is (+-) 15% (indicative).
Mn (Maximum torque): Maximum acceptable torque (Newton * mm). Tolerance for this parameter is (+-) 15% (indicative).
R (Spring rate): This parameter determines spring's resistance, while it is working. It is measured in Newton * mm / degree. Tolerance for this parameter is (+-) 15% (indicative).
A1 & F1 & M1: The following equation calculates the angle as a function of the torque: A1 = M1/R. In order to calculate the torque from the force, we use this equation: M = F*Ls.
Leg position: There are 4 types of torsion springs' leg positions: 0, 90 ,180 or 270 degrees (see picture above).
Helix direction: A right-hand-wound spring loads in a counter-clockwise direction. A left-hand-wound spring loads in a clockwise direction. Both types are available in all sizes.
Reference Number: All springs are identified by a unique reference: type . (De * 10) . (d * 100) . (N * 100) . For right-hand-wound springs, the type is a letter "D". For left-hand-wound springs, the type is a letter "G". The letter "N" stands for the number of coils.
Example: D.028.020.0350 is a right-hand-wound torsion spring with an external diameter of 2.8mm produced from 0.9mm stainless steel wire and having 3.5 coils.