Specifications

Part Number

UY4-25
UR13-60
UF8-70

■UV: Fmax. (Allowable Deflection) =LxFa%

Part Number		d	Solid Length	F max.	N{kgf}max.	Fa%	Unit Price
TypeD-L		d	Solid Length	F max.	N{kgf}max.	Fa%	Unit Price
UV3-	5	0.15	1.1	3.5	0.18{0.018}	70
	10	0.18	2.5	7	0.35{0.036}
	15	0.18	2.5	10.5	0.53{0.054}
	20	0.20	3.3	14	0.70{0.071}
	25	0.23	6.2	17.5	0.88{0.089}
	30	0.23	6.2	21	1.05{0.107}
UV4-	5	0.18	1.2	3.5	0.18{0.018}
	10	0.20	1.7	7	0.35{0.036}
	15	0.23	3.0	10.5	0.53{0.054}
	20	0.23	3.0	14	0.70{0.071}
	25	0.26	4.9	17.5	0.88{0.089}
	30	0.26	4.9	21	1.05{0.107}
UV5-	5	0.20	1.2	3.5	0.18{0.018}
	10	0.23	1.8	7	0.35{0.036}
	15	0.26	2.9	10.5	0.53{0.054}
	20	0.29	4.5	14	0.70{0.071}
	25	0.29	4.5	17.5	0.88{0.089}
	30	0.29	4.5	21	1.05{0.107}
UV6-	10	0.26	2.0	7	0.35{0.036}
	15	0.30	3.3	10.5	0.53{0.054}
	20	0.30	3.3	14	0.70{0.071}
	25	0.35	6.5	17.5	0.88{0.089}
	30	0.35	6.5	21	1.05{0.107}
	35	0.35	6.5	24.5	1.23{0.125}
	40	0.35	6.5	28	1.40{0.143}
UV8-	10	0.30	1.9	7	0.35{0.036}
	15	0.35	3.2	10.5	0.53{0.054}
	20	0.35	3.2	14	0.70{0.071}
	25	0.40	5.6	17.5	0.88{0.089}
	30	0.40	5.6	21	1.05{0.107}
	35	0.40	5.6	24.5	1.23{0.125}
	40	0.45	9.3	28	1.40{0.143}
	45	0.45	9.3	31.5	1.58{0.161}
	50	0.45	9.3	35	1.75{0.179}

■UY: Fmax. (Allowable Deflection) =LxFa%

Part Number		d	Solid Length	F max.	N{kgf}max.	Fa%	Unit Price
TypeD-L		d	Solid Length	F max.	N{kgf}max.	Fa%	Unit Price
UY2-	5	0.13	1.5	3	0.15{0.015}	60
	10	0.13	1.5	6	0.29{0.03}
	15	0.15	2.7	9	0.44{0.045}
	20	0.15	2.7	12	0.59{0.06}
	25	0.18	6.3	15	0.74{0.075}
	30	0.18	6.3	18	0.88{0.09}
UY3-	5	0.16	0.92	3.75	0.37{0.0375}	75
	10	0.2	2	7.5	0.74{0.075}
	15	0.23	3.45	11.25	1.10{0.1125}
	20	0.23	3.45	15	1.47{0.15}
	25	0.26	6.24	15	1.47{0.15}	60
	30	0.26	6.24	18	1.77{0.18}	60
UY4-	5	0.2	1.05	3.75	0.37{0.0375}	75
	10	0.23	1.84	7.5	0.74{0.075}
	15	0.26	2.86	11.25	1.10{0.1125}
	20	0.29	4.64	15	1.47{0.15}
	25	0.3	5.4	18.75	1.84{0.1875}
	30	0.3	5.4	22.5	2.26{0.23}
UY5-	5	0.23	1.15	3.75	0.37{0.0375}	75
	10	0.26	1.82	7.5	0.74{0.075}
	15	0.3	3.15	11.25	1.10{0.1125}
	20	0.3	3.15	15	1.47{0.15}
	25	0.32	4.16	18.75	1.84{0.1875}
	30	0.32	4.16	22.5	2.26{0.23}
	35	0.35	6	26.25	2.55{0.26}
	40	0.35	6	30	2.94{0.3}
UY6-	5	0.26	1.24	3.5	0.34{0.035}	70
	10	0.3	2.1	7.5	0.74{0.075}	75
	15	0.32	2.64	11.25	1.10{0.1125}
	20	0.35	3.85	15	1.47{0.15}
	25	0.38	5.32	18.75	1.84{0.1875}
	30	0.4	6.8	22.5	2.21{0.225}
	35	0.4	6.8	26.25	2.55{0.26}
	40	0.4	6.8	30	2.94{0.3}
UY8-	10	0.35	2.19	7.5	0.74{0.075}	75
	15	0.4	3.4	11.25	1.10{0.1125}
	20	0.4	3.4	15	1.47{0.15}
	25	0.45	5.4	18.75	1.84{0.1875}
	30	0.45	5.4	22.5	2.21{0.225}
	35	0.5	8.3	26.25	2.55{0.26}
	40	0.5	8.3	30	2.94{0.3}
	45	0.5	8.3	33.75	3.33{0.34}
	50	0.55	12.7	35	3.43{0.35}	70
UY10-	10	0.5	3.25	6	1.18{0.12}	60
	15	0.5	3.25	11.25	2.21{0.225}	75
	20	0.55	4.4	15	2.94{0.3}
	25	0.55	4.4	18.75	3.68{0.375}
	30	0.6	6.15	22.5	4.41{0.45}
	35	0.6	6.3	26.25	5.10{0.52}
	40	0.6	6.3	30	5.88{0.6}
	45	0.65	8.45	33.75	6.62{0.675}
	50	0.65	8.45	37.5	7.35{0.75}
UY12-	15	0.55	3.3	11.25	2.206{0.225}	75
	20	0.55	3.3	15	2.942{0.3}
	25	0.6	4.2	18.75	3.68{0.375}
	30	0.65	5.53	22.5	4.41{0.45}
	35	0.65	5.53	26.25	5.15{0.525}
	40	0.7	7.35	30	5.88{0.6}
	45	0.7	7.35	33.75	6.62{0.675}
	50	0.7	7.35	37.5	7.35{0.75}
	60	0.8	13.6	45	8.83{0.9}
	70	0.8	13.6	52.5	10.30{1.05}
	80	0.8	13.6	60	11.77{1.2}
UY13-	15	0.6	3.75	10.5	2.06{0.21}	70
	20	0.6	3.75	15	2.94{0.3}	75
	25	0.65	4.9	18.75	3.68{0.375}
	30	0.65	4.9	22.5	4.41{0.45}
	35	0.7	6.3	26.25	5.15{0.525}
	40	0.75	8.25	30	5.88{0.6}
	45	0.75	8.25	33.75	6.62{0.675}
	50	0.8	11.2	37.5	7.35{0.75}
	60	0.8	11.2	45	8.83{0.9}
	70	0.85	14.45	52.5	10.30{1.05}
	80	0.85	14.45	60	11.77{1.2}
UY16-	15	0.7	4.2	9	1.77{0.18}	60
	20	0.7	4.2	15	2.94{0.3}	75
	25	0.7	4.2	18.75	3.68{0.375}
	30	0.75	5.44	22.5	4.41{0.45}
	35	0.8	6.8	26.25	5.15{0.525}
	40	0.8	6.8	30	5.88{0.6}
	45	0.85	8.5	33.75	6.62{0.675}
	50	0.9	10.8	37.5	7.35{0.75}
	60	0.9	10.8	45	8.83{0.9}
	70	1	17	52.5	10.30{1.05}
	80	1	17	60	11.77{1.2}
UY20-	20	0.9	5.4	12	3.53{0.36}	60
	25	0.9	5.4	18.75	5.49{0.56}	75
	30	0.9	5.4	22.5	6.62{0.675}
	35	1	7.5	26.25	7.65{0.78}
	40	1	7.5	30	8.83{0.9}
	45	1	7.5	33.75	9.90{1.01}
	50	1.1	11	37.5	11.03{1.125}
	60	1.1	11	45	13.24{1.35}
	70	1.2	15.6	52.5	15.45{1.58}
	80	1.2	15.6	60	17.65{1.8}

■UR: Fmax. (Allowable Deflection) =LxFa%

Part Number		d	Solid Length	F max.	N{kgf}max.	Fa%	Unit Price
TypeD-L		d	Solid Length	F max.	N{kgf}max.	Fa%	Unit Price
UR2-	5	0.18	2.0	2.5	0.49{0.05}	50
	10	0.18	2.0	5	0.98{0.1}
	15	0.23	6.0	7.5	1.5{0.15}
	20	0.23	6.0	10	2.0{0.2}
	25	0.26	11.2	12.5	2.5{0.25}
	30	0.26	11.2	15	2.9{0.3}
UR3-	5	0.23	1.6	3	0.9{0.09}	60
	10	0.25	2.1	6	1.8{0.18}
	15	0.3	4.5	9	2.6{0.27}
	20	0.3	4.5	12	3.5{0.36}
	25	0.32	6.4	15	4.4{0.45}
	30	0.32	6.4	18	5.3{0.54}
	35	0.35	9.8	21	6.2{0.63}
	40	0.35	9.8	24	7.1{0.72}
UR4-	5	0.26	1.4	3	0.9{0.09}	60
	10	0.29	2	6	1.8{0.18}
	15	0.32	3	9	2.6{0.27}
	20	0.38	6.1	12	3.5{0.36}
	25	0.38	6.1	15	4.4{0.45}
	30	0.40	8	18	5.3{0.54}
	35	0.40	8	21	6.2{0.63}
	40	0.45	14.4	24	7.1{0.72}
	45	0.45	14.4	27	7.9{0.81}
	50	0.45	14.4	30	8.8{0.9}
	60	0.5	23	36	10.6{1.08}
UR5-	5	0.3	1.65	3	0.9{0.09}	60
	10	0.35	2.71	6	1.8{0.18}
	15	0.38	3.61	9	2.6{0.27}
	20	0.38	3.61	12	3.5{0.36}
	25	0.45	7.43	15	4.4{0.45}
	30	0.45	7.43	18	5.3{0.54}
	35	0.5	12.25	21	6.2{0.63}
	40	0.5	12.25	24	7.1{0.72}
	45	0.5	12.25	27	7.9{0.81}
	50	0.55	19.53	30	8.8{0.9}
	60	0.55	19.53	36	10.6{1.08}
UR6-	5	0.32	1.5	3	0.9{0.09}	60
	10	0.4	3	6	1.8{0.18}
	15	0.4	3	9	2.6{0.27}
	20	0.5	7	12	3.5{0.36}
	25	0.5	7	15	4.4{0.45}
	30	0.5	7	18	5.3{0.54}
	35	0.55	11	21	6.2{0.63}
	40	0.55	11	24	7.1{0.72}
	45	0.6	17.4	27	7.9{0.81}
	50	0.6	17.4	30	8.8{0.9}
	60	0.65	23.4	36	10.6{1.08}
	70	0.65	23.4	42	12.4{1.26}
UR8-	10	0.45	2.6	6	1.8{0.18}	60
	15	0.5	3.6	9	2.6{0.27}
	20	0.5	3.6	12	3.5{0.36}
	25	0.55	5.9	15	4.4{0.45}
	30	0.65	10.4	18	5.3{0.54}
	35	0.65	10.4	21	6.2{0.63}
	40	0.7	15.4	24	7.1{0.72}
	45	0.75	21	22	6.3{0.66}	50
	50	0.75	21	27	7.8{0.81}	55
	60	0.8	27.6	31	8.9{0.93}	52
	70	0.8	27.6	39.9	11.6{1.20}	57
	80	0.8	27.6	48	14.1{1.44}	60
UR10-	10	0.55	3.3	6	1.8{0.18}	60
	15	0.6	4.2	9	2.6{0.27}
	20	0.65	6.2	12	3.5{0.36}
	25	0.65	6.2	15	4.4{0.45}
	30	0.7	8.4	18	5.3{0.54}
	35	0.7	8.4	21	6.2{0.63}
	40	0.7	8.4	24	7.1{0.72}
	45	0.8	15.2	27	7.9{0.81}
	50	0.8	15.2	30	8.8{0.9}
	60	0.85	20.4	36	10.6{1.08}
	70	0.85	20.4	42	12.4{1.26}
	80	0.85	20.4	48	14.1{1.44}
UR12-	15	0.6	3.5	9	2.6{0.27}	60
	20	0.7	5.6	12	3.5{0.36}
	25	0.7	5.6	15	4.4{0.45}
	30	0.8	9.6	18	5.3{0.54}
	35	0.8	9.6	21	6.2{0.63}
	40	0.8	9.6	24	7.1{0.72}
	45	0.9	16.2	27	7.9{0.81}
	50	0.9	16.2	30	8.8{0.9}
	60	0.9	16.2	36	10.6{1.08}
	70	1	26	42	12.4{1.26}
	80	1	26	48	14.1{1.44}
UR13-	15	0.7	4.7	9	2.6{0.27}	60
	20	0.7	4.7	12	3.5{0.36}
	25	0.8	8	15	4.4{0.45}
	30	0.8	8	18	5.3{0.54}
	35	0.8	8	21	6.2{0.63}
	40	0.9	12.8	24	7.1{0.72}
	45	0.9	12.8	27	7.9{0.81}
	50	0.9	12.8	30	8.8{0.9}
	60	1.0	21	36	10.6{1.08}
	70	1.0	21	42	12.4{1.26}
	80	1.0	21	48	14.1{1.44}
UR16-	15	0.75	4.3	9	2.6{0.27}	60
	20	0.8	5.4	12	3.5{0.36}
	25	0.9	7.7	15	4.4{0.45}
	30	0.9	7.7	18	5.3{0.54}
	35	1.0	12	21	6.2{0.63}
	40	1.0	12	24	7.1{0.72}
	45	1.0	12	27	7.9{0.81}
	50	1.1	19	30	8.8{0.9}
	60	1.1	19	36	10.6{1.08}
	70	1.2	26.4	42	12.4{1.26}
	80	1.2	26.4	48	14.1{1.44}
UR20-	20	1.0	6	12	5.9{0.6}	60
	25	1.1	7.7	15	7.4{0.75}
	30	1.1	7.7	18	8.8{0.9}
	35	1.2	10.8	21	10.3{1.05}
	40	1.2	10.8	24	11.8{1.2}
	45	1.3	14.3	27	13.2{1.35}
	50	1.3	14.3	30	14.7{1.5}
	60	1.4	19.6	36	17.7{1.8}
	70	1.4	19.6	42	20.6{2.1}
	80	1.5	27	48	23.5{2.4}

[ ! ]Both ends of UR Type springs are not ground.
[ ! ]The values of solid length are for reference only.
There may be some variations depending on the lot.
[ ! ]Usage Count: 1 Million Times

■UF: Fmax. (Allowable Deflection) =Lx45%

Part Number		d	Solid Length	F max.	N{kgf}max.	Unit Price
TypeD-L		d	Solid Length	F max.	N{kgf}max.	Unit Price
UF 2-	5*	0.2	2.35	2.25	0.66 {0.068}
	10*	0.2	2.35	4.5	1.3 {0.14}
	15*	0.26	7.8	6.7	2.0 {0.20}
	20*	0.26	7.8	9	2.7 {0.27}
	25*	0.29	13.6	11.2	3.3 {0.34}
	30*	0.29	13.6	13.5	4.0 {0.41}
UF 3-	5*	0.26	1.8	2.25	1.1{0.11}
	10*	0.32	4.5	4.5	2.2{0.22}
	15*	0.32	4.5	6.7	3.2{0.33}
	20*	0.35	6.3	9	4.4{0.45}
	25*	0.35	6.3	11.2	5.5{0.56}
	30*	0.4	12.4	13.5	6.6{0.67}
	35*	0.4	12.4	15.7	7.6{0.78}
	40*	0.4	12.4	18	8.8{0.9}
UF 4-	5*	0.32	2	2.25	1.1{0.11}
	10*	0.35	3	4.5	2.2{0.22}
	15*	0.4	5.2	6.7	3.2{0.33}
	20*	0.4	5.2	9	4.4{0.45}
	25*	0.45	9.5	11.2	5.5{0.56}
	30*	0.45	9.5	13.5	6.6{0.67}
	35*	0.5	15.5	15.7	7.6{0.78}
	40*	0.5	15.5	18	8.8{0.9}
	45*	0.5	15.5	20	9.8{1}
	50*	0.5	15.5	22.5	10.8{1.1}
	60*	0.55	22.6	27	12.7{1.3}
UF 5-	5*	0.35	2.01	2.25	1.1{0.11}
	10*	0.4	3.2	4.5	2.2{0.23}
	15*	0.4	3.2	6.75	3.3{0.34}
	20*	0.45	4.95	9	4.4{0.45}
	25*	0.45	4.95	11.25	5.5{0.56}
	30*	0.5	7.75	13.5	6.7{0.68}
	35*	0.5	7.75	15.75	7.7{0.79}
	40	0.6	19.5	18	8.8{0.9}
	45	0.6	19.5	20.25	10{1.01}
	50	0.6	19.5	22.5	11.2{1.13}
	60	0.65	27.95	27	13.4{1.35}
UF 6-	5*	0.4	2.2	2.25	1.1{0.11}
	10*	0.5	5	4.5	2.2{0.22}
	15*	0.55	7.7	6.7	3.2{0.33}
	20*	0.55	7.7	9	4.4{0.45}
	25	0.6	10.8	11.2	5.5{0.56}
	30	0.65	15.6	13.5	6.6{0.67}
	35	0.65	15.6	15.7	7.6{0.78}
	40	0.65	15.6	18	8.8{0.9}
	45	0.65	15.6	20	9.8{1}
	50	0.7	23.1	22.5	10.8{1.1}
	60	0.7	23.1	27	12.7{1.3}
	70	0.75	30.8	31.5	14.7{1.5}
UF 8-	10	0.6	5.4	4.5	2.2{0.22}
	15	0.65	7.2	6.7	3.2{0.33}
	20	0.7	10.5	9	4.4{0.45}
	25	0.7	10.5	11.2	5.5{0.56}
	30	0.75	13.5	13.5	6.6{0.67}
	35	0.75	13.5	15.7	7.6{0.78}
	40	0.8	18.4	18	8.8{0.9}
	45	0.8	18.4	20	9.8{1}
	50	0.8	18.4	22.5	10.8{1.1}
	60	0.85	26.4	27	12.7{1.3}
	70	0.85	26.4	31.5	14.7{1.5}
	80	0.85	26.4	36	17.7{1.8}
UF10-	10	0.65	4.6	4.5	2.2{0.22}
	15	0.65	4.6	6.7	3.2{0.33}
	20	0.8	9.6	9	4.4{0.45}
	25	0.8	9.6	11.2	5.5{0.56}
	30	0.85	12.8	13.5	6.6{0.67}
	35	0.85	12.8	15.7	7.6{0.78}
	40	0.9	17	18	8.8{0.9}
	45	0.9	17	20	9.8{1}
	50	0.9	17	22.5	10.8{1.1}
	60	1.0	28	27	12.7{1.3}
	70	1.0	28	31.5	14.7{1.5}
	80	1.0	28	36	17.7{1.8}
UF12-	15	0.8	6.8	6.7	3.2{0.33}
	20	0.8	6.8	9	4.4{0.45}
	25	0.8	6.8	11.2	5.5{0.56}
	30	0.9	10.8	13.5	6.6{0.67}
	35	1.0	17	15.7	7.6{0.78}
	40	1.0	17	18	8.8{0.9}
	45	1.0	17	20	9.8{1}
	50	1.1	26.4	22.5	10.8{1.1}
	60	1.1	26.4	27	12.7{1.3}
	70	1.1	26.4	31.5	14.7{1.5}
	80	1.2	39.6	36	17.7{1.8}
UF13-	15	0.8	5.6	6.7	3.2{0.33}
	20	0.8	5.6	9	4.4{0.45}
	25	0.85	7.2	11.2	5.5{0.56}
	30	1.0	14	13.5	6.6{0.67}
	35	1.0	14	15.7	7.6{0.78}
	40	1.0	14	18	8.8{0.9}
	45	1.1	21.5	20	9.8{1}
	50	1.1	21.5	22.5	10.8{1.1}
	60	1.1	21.5	27	12.7{1.3}
	70	1.2	30	31.5	14.7{1.5}
	80	1.2	30	36	17.7{1.8}
UF16-	15	0.9	5.6	6.7	3.2{0.33}
	20	1.0	7.7	9	4.4{0.45}
	25	1.0	7.7	11.2	5.5{0.56}
	30	1.1	12.1	13.5	6.6{0.67}
	35	1.1	12.1	15.7	7.6{0.78}
	40	1.2	18	18	8.8{0.9}
	45	1.2	18	20	9.8{1}
	50	1.2	18	22.5	10.8{1.1}
	60	1.3	26	27	12.7{1.3}
	70	1.3	26	31.5	14.7{1.5}
	80	1.4	35	36	17.7{1.8}
UF20-	20	1.2	7.2	9	8.8{0.9}
	25	1.3	9.1	11.25	11.1{1.13}
	30	1.4	11.9	13.5	13.2{1.35}
	35	1.4	11.9	15.75	15.5{1.58}
	40	1.5	15.8	18	17.7{1.8}
	45	1.5	15.8	20.25	19.9{2.03}
	50	1.6	20.8	22.5	22.1{2.25}
	60	1.6	20.8	27	26.5{2.7}
	70	1.7	26.4	31.5	30.9{3.15}
	80	1.7	26.4	36	35.3{3.6}

kgf (Load)=N/mm (Spring Constant) x0.101972xF (Deflection)
{kgf}=Nx0.101972
[ ! ]Both ends of * marked UF Type springs are not ground.
[ ! ]The values of solid length are for reference only.
There may be some variations depending on the lot.
[ ! ]Usage Count: 1 Million Times

■ Spring Constant
[ ! ]D12 is applicable to UY, UR, UF, UL and UBB Types only. D14 is applicable to UBB Type only.

Type

UV

UY

UR

UF

UL

UTT

UM

UH

UBB

D

2

0.05{0.005}

0.2{0.02}

0.3{0.03}

0.5{0.05}

3

N/mm
0.05
{kgf/mm}{0.005}

N/mm
0.098
{kgf/mm}{0.01}

N/mm
0.29
{kgf/mm}
{0.03}

N/mm
0.49
{kgf/mm}
{0.05}

N/mm
0.98
{kgf/mm}
{0.1}

1.5{0.15}

4

2.0
{0.2}

2.9{0.3}

4.9{0.5}

5

N/mm
2.0
{kgf/mm}
{0.2}

6

N/mm
2.9
{kgf/mm}
{0.3}

N/mm
5.9
{kgf/mm}
{0.6}

N/mm
9.8
{kgf/mm}
{1.0}

8

10

N/mm
0.2
{kgf/mm}
{0.02}

12

13

N/mm
9.8
{kgf/mm}
{1.0}

N/mm
19.6
{kgf/mm}
{2.0}

14

16

20

0.3{0.03}

0.5{0.05}

0.98{0.1}

2.9{0.3}

3.9{0.4}

4.9{0.5}

14.7{1.5}

29.4{3.0}

Fmax.

F=Lx70%

F=Lx75%

F=Lx60%

F=Lx45%

F=Lx40%

F=Lx40%

F=Lx35%

F=Lx30%

F=Lx25%

Round Wire Coil Springs/Deflection 45%/O.D. Referenced