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M74-D

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Item	Part no. toDIN 24250	Description
1.1	472.1	Seal face
1.2	472.2	Seal face
1.3	474	Thrust ring
1.4	485	Drive collar
1.5	477	Spring
1.6	904	Set screw
1.7	412.1	O-Ring
1.8	412.2	O-Ring
2	475.1	Seat (G9)
3	412.3	O-Ring
4	475.2	Seat (G9)
5	412.4	O-Ring

1) d1 > 100 mm: 30°
2) d1 > 100 mm: +0.1
3) d1 > 100 mm: H7

M74-D

PDF data sheet

Features

For plain shafts
Dual seal
Unbalanced
Rotating multiple springs
Independent of direction of rotation
Seal concept based on the M7 range
Variant with pumping screw available (M74F-D)

Advantages

Efficient stock keeping due to easily interchangeable faces
Extended selection of materials
Flexibility in torque transmissions
EN 12756 (For connection dimensions d1 up to 100 mm (3.94"))

Operating range

Shaft diameter:
d1 = 18 ... 200 mm (0.71" … 7.87")
Pressure:
p1 = 25 bar (363 PSI)
Temperature:
t = -50 °C ... 220 °C
(-58 °F … 428 °F)
Sliding velocity:
vg = 20 m/s (66 ft/s)
Axial movement:
d1 up to 100 mm: ±0.5 mm
d1 from 100 mm: ±2.0 mm

Materials

Seal face: Silicon carbide (Q1)
Seat G9: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1)
Seat G4, G6 (Q1, Q2), Seat G13 (A, B)

Secondary seals: EPDM (E), FKM (V), FFKM (K)
Springs: CrNiMo steel (G)
Metal parts: CrNiMo steel (G), Duplex (G1)

Standards and approvals

EN 12756

Recommended applications

Low solids content and low abrasive media
Toxic and hazardous media
Media with poor lubrication properties
Adhesives
Chemical industry
Process industry
Pulp and paper industry
Chemical standard pumps

Product variants

https://media-assets.eagleburgmann.com/image/108134910297/image_b0h0mviem92j70fri92hdt9l0o/-FWEBP

M74F-D
Dimensions, items and descriptions as for M74-D, but with pumping screw.
Dependent on direction of rotation. Viscosity ≤ ISO VG10).

Similar products

AX25

External configuration
Balanced
Independent of direction of rotation
Independent of pressure direction

AX40K

Stationary springs
Balanced
Independent of direction of rotation
Independent of pressure direction

BT-C5E

Single seal
For plain shafts
Unbalanced
Multiple springs, rotating
Independent of direction of rotation

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d₁	d₃	d₆	d₇	d₈	d₉	d₁₁	d₁₂	d_s	l₁	l₃	l₄	l₅	l₆	l₇	l₈	l₉	l₁₀	l₁₁	l₁₂	l₁₃	l₁₄	l₁₅	l₁₆	l₂₈	l₃₁	l₃₅	m_x	t	R
18	33	27.0	33.0	3	4	24.0	30.0	–	61.0	38	19.0	2.0	5	9	19.5	11.5	8.5	12.5	9.0	10.0	8.0	1.5	5	7.5	17.0	15	M5	3.5	1.5
20	35	29.0	35.0	3	4	29.5	35.0	–	61.0	38	19.0	2.0	5	9	19.5	11.5	8.5	12.5	8.5	9.5	7.5	1.5	5	7.5	17.0	15	M5	3.5	1.5
22	37	31.0	37.0	3	4	29.5	35.0	42	61.0	38	19.0	2.0	5	9	19.5	11.5	8.5	12.5	8.5	9.5	7.5	1.5	5	7.5	17.0	15	M5	3.5	1.5
24	39	33.0	39.0	3	4	32.0	38.0	44	61.0	38	19.0	2.0	5	9	19.5	11.5	8.5	12.5	8.5	9.5	7.5	1.5	5	7.5	17.0	15	M5	3.5	1.5
25	40	34.0	40.0	3	4	32.0	38.0	45	61.0	38	19.0	2.0	5	9	19.5	11.5	8.5	12.5	8.5	9.5	7.5	1.5	5	7.5	17.0	15	M5	3.5	1.5
28	43	37.0	43.0	3	4	36.0	42.0	47	62.0	39	19.5	2.0	5	9	19.5	11.5	8.5	14.0	10.0	11.0	9.0	1.5	5	7.5	17.5	15	M6	3.5	1.5
30	45	39.0	45.0	3	4	39.2	45.0	49	62.0	39	19.5	2.0	5	9	19.5	11.5	8.5	14.0	11.5	11.0	10.5	1.5	5	7.5	17.5	15	M6	3.5	1.5
32	47	42.0	48.0	3	4	42.2	48.0	51	62.0	39	19.5	2.0	5	9	19.5	11.5	8.5	14.0	11.5	11.0	10.5	1.5	5	7.5	17.5	15	M6	3.5	1.5
33	48	42.0	48.0	3	4	44.2	50.0	51	62.0	39	19.5	2.0	5	9	19.5	11.5	8.5	14.5	12.0	11.5	10.5	1.5	5	7.5	17.5	15	M6	3.5	1.5
35	50	44.0	50.0	3	4	46.2	52.0	54	62.0	39	19.5	2.0	5	9	19.5	11.5	8.5	14.5	12.0	11.5	11.0	1.5	5	7.5	17.5	15	M6	3.5	1.5
38	55	49.0	56.0	4	4	49.2	55.0	59	69.0	41	20.5	2.0	6	9	22.0	14.0	10.0	14.5	11.3	11.5	10.3	1.5	5	9.0	18.5	15	M6	3.5	1.5
40	57	51.0	58.0	4	4	52.2	58.0	61	70.0	42	21.0	2.0	6	9	22.0	14.0	10.0	14.5	11.8	11.5	10.8	1.5	5	9.0	19.0	15	M6	3.5	1.5
43	60	54.0	61.0	4	4	53.3	62.0	65	70.0	42	21.0	2.0	6	9	22.0	14.0	10.0	17.0	13.2	14.3	12.0	2.0	6	9.0	19.0	15	M6	3.5	2.5
45	62	56.0	63.0	4	4	55.3	64.0	66	70.0	42	21.0	2.0	6	9	22.0	14.0	10.0	17.0	12.8	14.3	11.6	2.0	6	9.0	19.0	15	M6	3.5	2.5
48	65	59.0	66.0	4	4	59.7	68.4	69	70.0	42	21.0	2.0	6	9	22.0	14.0	10.0	17.0	12.8	14.3	11.6	2.0	6	9.0	19.0	15	M6	3.5	2.5
50	67	62.0	70.0	4	4	60.8	69.3	71	73.0	43	21.5	2.5	6	9	23.0	15.0	10.5	17.0	12.8	14.3	11.6	2.0	6	9.5	19.5	15	M6	3.5	2.5
53	70	65.0	73.0	4	4	63.8	72.3	75	73.0	43	21.5	2.5	6	9	23.0	15.0	12.0	17.0	13.5	14.3	12.3	2.0	6	11.0	19.5	15	M6	3.5	2.5
55	72	67.0	75.0	4	4	66.5	75.4	76	73.0	43	21.5	2.5	6	9	23.0	15.0	12.0	18.0	14.5	15.3	13.3	2.0	6	11.0	19.5	15	M8	3.5	2.5
58	79	70.0	78.0	4	5	69.5	78.4	83	86.0	56	28.0	2.5	6	9	23.0	15.0	12.0	18.0	14.5	15.3	13.3	2.0	6	11.0	23.5	19	M8	3.5	2.5
60	81	72.0	80.0	4	5	71.5	80.4	85	86.0	56	28.0	2.5	6	9	23.0	15.0	12.0	18.0	14.5	15.3	13.3	2.0	6	11.0	23.5	19	M8	3.5	2.5
63	84	75.0	83.0	4	5	74.5	83.4	88	85.0	55	27.5	2.5	6	9	23.0	15.0	12.0	18.0	14.2	15.3	13.3	2.0	6	11.0	24.5	19	M8	3.5	2.5
65	86	77.0	85.0	4	5	76.5	85.4	95	85.0	55	27.5	2.5	6	9	23.0	15.0	12.0	18.0	14.2	15.3	13.0	2.0	6	11.0	24.5	19	M8	3.5	2.5
68	89	81.0	90.0	4	5	82.7	91.5	93	91.0	55	27.5	2.5	7	9	26.0	18.0	12.5	19.0	14.9	16.0	13.7	2.0	6	11.3	24.5	19	M8	3.5	2.5
70	91	83.0	92.0	4	5	83.0	92.0	95	92.0	56	28.0	2.5	7	9	26.0	18.0	12.5	18.0	14.2	15.3	13.0	2.0	6	11.3	23.5	19	M8	3.5	2.5
75	99	88.0	97.0	4	5	90.2	99.0	105	92.0	56	28.0	2.5	7	9	26.0	18.0	12.5	18.0	15.2	15.3	14.0	2.0	6	11.3	25.5	19	M8	3.5	2.5
80	104	95.0	105.0	4	5	95.2	104.0	109	92.5	56	28.0	3.0	7	9	26.2	18.2	13.0	19.0	16.2	16.3	15.0	2.0	6	12.0	25.5	19	M8	3.5	2.5
85	109	100.0	110.0	4	5	100.2	109.0	114	92.5	56	28.0	3.0	7	9	26.2	18.2	15.0	19.0	16.0	16.3	14.8	2.0	6	14.0	25.0	19	M8	3.5	2.5
90	114	105.0	115.0	4	5	105.2	114.0	119	92.5	56	28.0	3.0	7	9	26.2	18.2	15.0	19.0	16.0	16.3	14.8	2.0	6	14.0	25.5	19	M8	3.5	2.5
95	119	110.0	120.0	4	5	111.6	120.3	124	90.5	56	28.0	3.0	7	9	25.2	17.2	15.0	20.0	17.0	17.3	15.8	2.0	6	14.0	25.0	19	M8	3.5	2.5
100	124	115.0	125.0	4	5	114.5	123.3	129	90.5	56	28.0	3.0	7	9	25.2	17.2	15.0	20.0	17.0	17.3	15.8	2.0	6	14.0	25.0	19	M8	3.5	2.5
105	138	122.2	134.3	5	7	–	–	143	108.0	68	34.0	2.0	10	–	30.0	20.0	–	–	–	–	–	–	–	–	30.5	22	M8	3.5	-
110	143	128.2	140.3	5	7	–	–	148	110.0	70	35.0	2.0	10	–	30.0	20.0	–	–	–	–	–	–	–	–	31.5	22	M8	3.5	-
115	148	136.2	148.3	5	7	–	–	153	110.0	70	35.0	2.0	10	–	30.0	20.0	–	–	–	–	–	–	–	–	31.5	22	M8	3.5	-
120	153	138.2	150.3	5	7	–	–	158	110.0	70	35.0	2.0	10	–	30.0	20.0	–	–	–	–	–	–	–	–	31.5	22	M8	3.5	-
125	158	142.2	154.3	5	7	–	–	163	110.0	70	35.0	2.0	10	–	30.0	20.0	–	–	–	–	–	–	–	–	31.5	22	M8	3.5	-
130	163	146.2	158.3	5	7	–	–	168	110.0	70	35.0	2.0	10	–	30.0	20.0	–	–	–	–	–	–	–	–	31.5	22	M8	3.5	-
135	168	152.2	164.3	5	7	–	–	173	110.0	70	35.0	2.0	10	–	30.0	20.0	–	–	–	–	–	–	–	–	31.5	22	M8	3.5	-
140	173	156.2	168.3	5	7	–	–	178	110.0	70	35.0	2.0	10	–	30.0	20.0	–	–	–	–	–	–	–	–	31.5	22	M8	3.5	-
145	178	161.2	173.3	5	7	–	–	183	110.0	70	35.0	2.0	10	–	30.0	20.0	–	–	–	–	–	–	–	–	31.5	22	M8	3.5	-
150	183	168.2	180.3	5	7	–	–	188	114.0	70	35.0	2.0	10	–	32.0	22.0	–	–	–	–	–	–	–	–	31.5	22	M8	3.5	-
155	191	173.2	185.3	5	7	–	–	196	127.0	79	39.5	2.0	12	–	34.0	24.0	–	–	–	–	–	–	–	–	35.5	22	M8	3.5	-
160	196	178.2	190.3	5	7	–	–	201	127.0	79	39.5	2.0	12	–	34.0	24.0	–	–	–	–	–	–	–	–	35.5	22	M8	3.5	-
165	201	183.2	195.3	5	7	–	–	206	127.0	79	39.5	2.0	12	–	34.0	24.0	–	–	–	–	–	–	–	–	35.5	22	M8	3.5	-
170	206	188.2	200.3	5	7	–	–	211	127.0	79	39.5	2.0	12	–	34.0	24.0	–	–	–	–	–	–	–	–	35.5	22	M8	3.5	-
175	211	193.2	205.3	5	7	–	–	216	127.0	79	39.5	2.0	12	–	34.0	24.0	–	–	–	–	–	–	–	–	35.5	22	M8	3.5	-
180	216	207.5	219.3	5	7	–	–	221	135.0	79	39.5	2.0	12	–	38.0	28.0	–	–	–	–	–	–	–	–	35.5	22	M8	3.5	-
185	221	212.5	224.3	5	7	–	–	226	135.0	79	39.5	2.0	12	–	38.0	28.0	–	–	–	–	–	–	–	–	35.5	22	M8	3.5	-
190	226	217.5	229.3	5	7	–	–	231	135.0	79	39.5	2.0	12	–	38.0	28.0	–	–	–	–	–	–	–	–	35.5	22	M8	3.5	-
195	231	222.5	234.3	5	7	–	–	236	135.0	79	39.5	2.0	12	–	38.0	28.0	–	–	–	–	–	–	–	–	35.5	22	M8	3.5	-
200	236	227.5	239.3	5	7	–	–	241	135.0	79	39.5	2.0	12	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

Dimensions in millimeter