DR Models

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Features of DR Models

The DR models are the basic standard ROSTA rubber springs. Choose a combination of metal outer shell and metal or aluminum alloy inner shell for your application and mounting method.They can be used for an assortment of applications, including disc springs for general machinery, elastic guides, tensioners, and flexible stoppers.

DR Models Specifications

DR-S Models
- [Specifications & Dimensions]
DR-A Models
- [Specifications & Dimensions]

DR-S Models

[Specifications & Dimensions]

Model	Dimensions						Torque at torsional angle [N•m]						Mass [kg]
Model	A	C	E	L	L1±0.2	T^+0.5₀	5°	10°	15°	20°	25°	30°	Mass [kg]
DR-S-11X20	20^+0.3_-0.1	8^+0.25₀	-	20	25	-	0.4	1.0	1.6	2.4	3.5	4.8	0.04
DR-S-11X30	20^+0.3_-0.1	8^+0.25₀	-	30	35	-	0.5	1.4	2.4	3.7	5.2	7.2	0.05
DR-S-11X50	20^+0.3_-0.1	8^+0.25₀	-	50	55	-	0.8	2.4	4.1	6.1	8.6	12.0	0.08
DR-S-15X25	27^+0.4₀	11^+0.25₀	10^±0.2	25	30	5	0.7	1.6	2.6	4.0	5.7	8.2	0.07
DR-S-15X40	27^+0.4₀	11^+0.25₀	10^±0.2	40	45	5	1.1	2.5	4.2	6.4	9.2	13.2	0.12
DR-S-15X60	27^+0.4₀	11^+0.25₀	10^±0.2	60	65	5	1.6	3.8	6.3	9.6	13.8	19.8	0.18
DR-S-18X30	32^+0.3_-0.1	12^+0.25₀	12^±0.3	30	35	6	1.9	4.5	7.5	11.0	15.0	20.6	0.12
DR-S-18X50	32^+0.3_-0.1	12^+0.25₀	12^±0.3	50	55	6	3.2	7.5	12.5	18.3	25.0	34.4	0.2
DR-S-18X80	32^+0.3_-0.1	12^+0.25₀	12^±0.3	80	85	6	5.1	12.0	20.0	29.3	40.0	55.0	0.32
DR-S-27X40	45^+0.4₀	22^+0.25₀	20^±0.4	40	45	8	4.7	10.7	17.5	26.9	39.5	57.0	0.26
DR-S-27X60	45^+0.4₀	22^+0.25₀	20^±0.4	60	65	8	7.0	16.0	26.3	40.3	59.3	85.5	0.39
DR-S-27X100	45^+0.4₀	22^+0.25₀	20^±0.4	100	105	8	11.7	26.7	43.8	67.2	98.8	142.5	0.65
DR-S-38X60	60^+0.3_-0.2	30^+0.25₀	25^±0.4	60	70	10	13.0	30.4	50.6	78.0	113.0	162.0	0.67
DR-S-38X80	60^+0.3_-0.2	30^+0.25₀	25^±0.4	80	90	10	17.3	40.5	67.5	104.0	151.0	216.0	0.90
DR-S-38X120	60^+0.3_-0.2	30^+0.25₀	25^±0.4	120	130	10	26.0	60.8	101.2	156.0	226.0	324.0	1.32
DR-S-45X80-N	75^+0.3_-0.2	35^+0.4₀	35^±0.5	80	90	12	27.6	62.4	104.0	160.0	222.0	320.0	1.42
DR-S-45X100-N	75^+0.3_-0.2	35^+0.4₀	35^±0.5	100	110	12	34.5	78.0	130.0	200.0	278.0	400.0	1.76
DR-S-45X150-N	75^+0.3_-0.2	35^+0.4₀	35^±0.5	150	160	12	51.8	117.0	195.0	300.0	420.0	600.0	2.62
DR-S-50X120-N	80^+0.3_-0.2	40^+0.4₀	40^±0.5	120	130	M12X40	51.0	133.0	250.0	395.0	570.0	780.0	2.37
DR-S-50X200-N	80^+0.3_-0.2	40^+0.4₀	40^±0.5	200	210	M12X40	102.0	260.0	475.0	745.0	1070.0	1450.0	3.91
DR-S-50X300-N	80^+0.3_-0.2	40^+0.4₀	40^±0.5	300	310	M12X40	150.0	385.0	700.0	1100.0	1590.0	2160.0	5.80

DR-A Models

[Specifications & Dimensions]

Model	Dimensions						Torque at torsional angle [N•m]						Mass [kg]
DR-A	A	C	E	L	L1±0.2	T^+0.5₀	5°	10°	15°	20°	25°	30°	Mass [kg]］
DR-A-15×25	27^+0.4₀	11^±0.250	10^±0.2	25	30	5	0.7	1.6	2.6	4.0	5.7	8.2	0.06
DR-A-15×40	27^+0.4₀	11^±0.250	10^±0.2	40	45	5	1.1	2.5	4.2	6.4	9.2	13.2	0.10
DR-A-15×60	27^+0.4₀	11^±0.250	10^±0.2	60	65	5	1.6	3.8	6.3	9.6	13.8	19.8	0.15
DR-A-18×30	32^+0.3_-0.1	12^±0.250	12^±0.3	30	35	6	1.9	4.5	7.5	11.0	15.0	20.6	0.10
DR-A-18×50	32^+0.3_-0.1	12^±0.250	12^±0.3	50	55	6	3.2	7.5	12.5	18.3	25.0	34.4	0.16
DR-A-18×80	32^+0.3_-0.1	12^±0.250	12^±0.3	80	85	6	5.1	12.0	20.0	29.3	40.0	55.0	0.25
DR-A-27×40	45^+0.4₀	22^±0.250	20^±0.4	40	45	8	4.7	10.7	17.5	26.9	39.5	57.0	0.25
DR-A-27×60	45^+0.4₀	22^±0.250	20^±0.4	60	65	8	7.0	16.0	26.3	40.3	59.3	85.5	0.36
DR-A-27×100	45^+0.4₀	22^±0.250	20^±0.4	100	105	8	11.7	26.7	43.8	67.2	98.8	142.5	0.60
DR-A-38×60	60^+0.3_-0.2	30^±0.250	25^±0.4	60	70	10	13.0	30.4	50.6	78.0	113.0	162.0	0.60
DR-A-38×80	60^+0.3_-0.2	30^±0.250	25^±0.4	80	90	10	17.3	40.5	67.5	104.0	151.0	216.0	0.79
DR-A-38×120	60^+0.3_-0.2	30^±0.250	25^±0.4	120	130	10	26.0	60.8	101.2	156.0	226.0	324.0	1.16
DR-A-45×80-N	75^+0.3_-0.2	35^±0.40	35^±0.5	80	90	12	27.6	62.4	104.0	160.0	222.0	320.0	1.25
DR-A-45×100-N	75^+0.3_-0.2	35^±0.40	35^±0.5	100	110	12	34.5	78.0	130.0	200.0	278.0	400.0	1.53
DR-A-45×150-N	75^+0.3_-0.2	35^±0.40	35^±0.5	150	160	12	51.8	117.0	195.0	300.0	420.0	600.0	2.30
DR-A-50×120-N	80^+0.3_-0.2	40^±0.40	40^±0.5	120	130	M12×40	51.0	133.0	250.0	395.0	570.0	780.0	2.07
DR-A-50×200-N	80^+0.3_-0.2	40^±0.40	40^±0.5	200	210	M12×40	102.0	260.0	475.0	745.0	1070.0	1450.0	3.45
DR-A-50×300-N	80^+0.3_-0.2	40^±0.40	40^±0.5	300	310	M12×40	150.0	385.0	700.0	1100.0	1590.0	2160.0	5.15

Options of DR Models

Clamp BR Models
- • BR Models
  Dimensions
Bracket WS/WD Models
- • WS/WD Models
  Dimensions

Clamp BR Models

BR Models

Dimensions

Unit [mm]

Model	Applicable unit	A	B	C	E	F	T	Mass [kg]
BR-11	DR-S-11	20	20	37	50	2	6	0.03
BR-15	DR-□-15	27	25	50	65	2	7	0.04
BR-18	DR-□-18	32	30	60	80	2.5	9	0.08
BR-27	DR-□-27	45	35	80	105	3	11	0.15
BR-38	DR-□-38	60	40	100	125	4	13	0.27
BR-45-N	DR- □ -45(-N)	75	45	120	150	5	13	0.48
BR-50-N	DR- □ -50(-N)	80	50	135	175	6	18	0.71

Clamp BR Models
- • BR Models
  Dimensions
Bracket WS/WD Models
- • WS/WD Models
  Dimensions

Bracket WS/WD Models

WS/WD Models

Dimensions

Unit [mm]

Model	Applicable unit	A	B	C	D	E	F	G	H1	H2	J	K	S	T	U	Mass [kg]
WS-11/WD-15	DR, DK, DO-A-15	46	45	30	7	30	13	11.5	27	35	10	7.5	4	6.5	5.5	0.08
WS-15/WD-18	DR-, DK-, DO-A-18	58	55	32	7	40	13	13.5	34	44	12	7.5	5	8.5	6.5	0.15
WS-18/WD-27	DR-, DK-, DO-A-27	74	70	38	9.5	50	15.5	16.5	43	55	20	10	6	10.5	8.5	0.28
WS-27/WD-38	DR-, DK-, DO-A-38	98	90	52	11.5	65	21.5	21	57	75	25	12.5	8	12.5	10.5	0.70
WS-38/WD-45	DR,DK-A-45(N)	116	110	55	14	80	24	21	66	85	35	15	8	16.5	12.5	0.90
WS-45/WD-50	DR-A-50(N)	140	140	66	18	100	30	26	80	110	40	20	10	20.5	12.5	1.80