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H74-D

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Item	Part no.to DIN 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: 2 mm x 30°
2) d1 > 100 mm: 30°
3) d1 > 100 mm: H7
4) d1 > 100 mm: +0.1

H74-D

PDF data sheet

Features

For stepped shafts
Dual seal
Balanced
Rotating multiple springs
Independent of direction of rotation
Seal concept based on the H7 range
Variant with pumping screw available (H74F-D)

Advantages

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

Operating range

Shaft diameter:
d1 = 14 ... 200 mm (0.55" … 7.87")
Pressure:
p1 = 80 bar (1,160 PSI) for d1 = 14 ... 100 mm,
p1 = 25 bar (363 PSI) for d1 = 100 ... 200 mm,
p1 = 16 bar (232 PSI) for d1 > 200 mm
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, Q2), Carbon graphite antimony impregnated (A), Aluminium oxide (V), Special cast CrMo steel (S)
Seat G9: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1*, Q2*)
Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K)
Springs: CrNiMo steel (G)
Metal parts: CrNiMo steel (G), Duplex (G1)
* Cannot be combined with seal face made of S

Standards and approvals

EN 12756

Recommended applications

Low solids content and low abrasive media
Toxic and hazardous media
Media with poor lubrication properties
Adhesives
Process industry
Oil and gas industry
Refining technology
Petrochemical industry
Chemical industry
Power plant technology
Pulp and paper industry
Chemical standard pumps

Product variants

https://media-assets.eagleburgmann.com/image/108134910297/image_acl15e0kit0bd5vc2it1mb4208/-FWEBP

H74F-D
Dimensions, items and descriptions as for H74-D, but with pumping screw.
Dependent on direction of rotation.

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

Back to overview

d₁	d₂	d₃	d₆	d₇	d₈	d₁₁	d₁₂	d_s	l₁	l₂	l₃	l₄	l₅	l₆	l₇	l₈	l₉	l₁₂	l₁₄	l₁₀	l₁₅	l₂₈	l₁₆	l₃₁	m_x	R
14	18	33	21	25	3	24	30	–	73	18	53	26.5	1.5	4	8.5	17.5	10	6.5	5.6	7.5	1.5	6.6	5	17	M5	1.2
16	20	35	23	27	3	29.5	35	–	73	18	53	26.5	1.5	4	8.5	17.5	10	8.5	7.5	7.5	1.5	6.6	5	17	M5	1.5
18	22	37	27	33	3	29.5	35	42	76	20	53	26.5	2	5	9	19.5	11.5	9	8	8.5	1.5	7.5	5	17	M5	1.5
20	24	39	29	35	3	32	38	44	76	20	53	26.5	2	5	9	19.5	11.5	8.5	7.5	8.5	1.5	7.5	5	17	M5	1.5
22	26	41	31	37	3	32	38	45	76	20	53	26.5	2	5	9	19.5	11.5	8.5	7.5	8.5	1.5	7.5	5	17	M5	1.5
24	28	43	33	39	3	36	42	47	77	20	54	27	2	5	9	19.5	11.5	8.5	7.5	8.5	1.5	7.5	5	17.5	M6	1.5
25	30	45	34	40	3	39.2	45	49	77	20	54	27	2	5	9	19.5	11.5	8.5	7.5	8.5	1.5	7.5	5	17.5	M6	1.5
28	33	48	37	43	3	42.2	48	51	77	20	54	27	2	5	9	19.5	11.5	10	9	8.5	1.5	7.5	5	17.5	M6	1.5
30	35	50	39	45	3	44.2	50	54	77	20	54	27	2	5	9	19.5	11.5	11.5	10.5	8.5	1.5	7.5	5	17.5	M6	1.5
32	38	55	42	48	3	46.2	52	59	79	20	56	28	2	5	9	19.5	11.5	11.5	10.5	8.5	1.5	7.5	5	18.5	M6	1.5
33	38	55	42	48	3	49.2	55	59	79	20	56	28	2	5	9	19.5	11.5	12	10.5	8.5	1.5	7.5	5	18.5	M6	1.5
35	40	57	44	50	3	52.2	58	61	80	20	57	28.5	2	5	9	19.5	11.5	12	11	8.5	1.5	7.5	5	19	M6	1.5
38	43	60	49	56	4	53.3	62	65	85	23	57	28.5	2	6	9	22	14	11.3	10.3	10	2	9	6	19	M6	1.5
40	45	62	51	58	4	55.3	64	66	85	23	57	28.5	2	6	9	22	14	11.8	10.8	10	2	9	6	19	M6	1.5
43	48	65	54	61	4	59.7	68.4	69	85	23	57	28.5	2	6	9	22	14	13.2	12	10	2	9	6	19	M6	2.5
45	50	67	56	63	4	60.8	69.3	71	84	23	56	28	2	6	9	22	14	12.8	11.6	10	2	9	6	19.5	M6	2.5
48	53	70	59	66	4	63.8	72.3	75	84	23	56	28	2	6	9	22	14	12.8	11.6	10	2	9	6	19.5	M6	2.5
50	55	72	62	70	4	66.5	75.4	76	93	25	63	31.5	2.5	6	9	23	15	12.8	11.6	10.5	2	9.5	6	19.5	M6	2.5
53	58	79	65	73	4	69.5	78.4	83	97	25	67	33.5	2.5	6	9	23	15	13.5	12.3	12	2	11	6	23.5	M8	2.5
55	60	81	67	75	4	71.5	80.4	85	97	25	67	33.5	2.5	6	9	23	15	14.5	13.3	12	2	11	6	23.5	M8	2.5
58	63	84	70	78	4	74.5	83.4	88	104	25	74	37	2.5	6	9	23	15	14.5	13.3	12	2	11	6	24.5	M8	2.5
60	65	86	72	80	4	76.5	85.4	95	104	25	74	37	2.5	6	9	23	15	14.5	13.3	12	2	11	6	24.5	M8	2.5
63	68	89	75	83	4	82.7	91.5	93	109	25	79	39.5	2.5	6	9	23	15	14.2	13.3	12	2	11	6	24.5	M8	2.5
65	70	91	77	85	4	83	92	95	98	25	68	34	2.5	6	9	23	15	14.2	13	12	2	11	6	23.5	M8	2.5
70	75	99	83	92	4	90.2	99	105	112.5	28	76.4	38.2	2.5	7	9	26	18	14.9	13.7	12.5	2	11.3	6	25.5	M8	2.5
75	80	104	88	97	4	95.2	104	109	112.5	28	76.4	38.2	2.5	7	9	26	18	14.2	13	12.5	2	11.3	6	25.5	M8	2.5
80	85	109	95	105	4	100.2	109	114	112.5	28	76	38	3	7	9	26.2	18.2	15.2	14	12.5	2	11.3	6	25	M8	2.5
85	90	114	100	110	4	105.2	114	119	112.5	28	76	38	3	7	9	26.2	18.2	16.2	15	13	2	12	6	25.5	M8	2.5
90	95	119	105	115	4	111.6	120.3	124	112.5	28	76	38	3	7	9	26.2	18.2	16	14.8	15	2	14	6	25	M8	2.5
95	100	124	110	120	4	114.5	123.3	129	110.5	28	76	38	3	7	9	25.2	17.2	16	14.8	15	2	14	6	25	M8	2.5
100	105	129	115	125	4	–	–	134	110.5	28	76	38	3	7	9	25.2	17.2	17	15.8	15	–	14	–	25.5	M8	2.5
105	115	148	122.2	134.3	5	–	–	153	122	32	82	41	2	10	–	30	20	17	15.8	15	–	14	–	31.5	M8	2.5
110	120	153	128.2	140.3	5	–	–	158	122	32	82	41	2	10	–	30	20	–	–	–	–	–	–	31.5	M8	-
115	125	158	136.2	148.3	5	–	–	163	122	32	82	41	2	10	–	30	20	–	–	–	–	–	–	31.5	M8	-
120	130	163	138.2	150.3	5	–	–	168	122	32	82	41	2	10	–	30	20	–	–	–	–	–	–	31.5	M8	-
125	135	168	142.2	154.3	5	–	–	173	122	32	82	41	2	10	–	30	20	–	–	–	–	–	–	31.5	M8	-
130	140	173	146.2	158.3	5	–	–	178	122	32	82	41	2	10	–	30	20	–	–	–	–	–	–	31.5	M8	-
135	145	178	152.2	164.3	5	–	–	183	122	32	82	41	2	10	–	30	20	–	–	–	–	–	–	31.5	M8	-
140	150	183	156.2	168.3	5	–	–	188	122	32	82	41	2	10	–	30	20	–	–	–	–	–	–	31.5	M8	-
145	155	191	161.2	173.3	5	–	–	196	133	34	93	46.5	2	10	–	30	20	–	–	–	–	–	–	35.5	M8	-
150	160	196	168.2	180.3	5	–	–	201	137	36	93	46.5	2	10	–	32	22	–	–	–	–	–	–	35.5	M8	-
155	165	201	173.2	185.3	5	–	–	206	141	38	93	46.5	2	12	–	34	24	–	–	–	–	–	–	35.5	M8	-
160	170	206	178.2	190.3	5	–	–	211	141	38	93	46.5	2	12	–	34	24	–	–	–	–	–	–	35.5	M8	-
165	175	211	183.2	195.3	5	–	–	216	141	38	93	46.5	2	12	–	34	24	–	–	–	–	–	–	35.5	M8	-
170	180	216	188.2	200.3	5	–	–	221	141	38	93	46.5	2	12	–	34	24	–	–	–	–	–	–	35.5	M8	-
175	185	221	193.2	205.3	5	–	–	226	141	38	93	46.5	2	12	–	34	24	–	–	–	–	–	–	35.5	M8	-
180	190	226	207.5	219.3	5	–	–	231	149	42	93	46.5	2	12	–	38	28	–	–	–	–	–	–	35.5	M8	-
185	195	231	212.5	224.3	5	–	–	236	149	42	93	46.5	2	12	–	38	28	–	–	–	–	–	–	35.5	M8	-
190	200	236	217.5	229.3	5	–	–	241	149	42	93	46.5	2	12	–	38	28	–	–	–	–	–	–	35.5	M8	-
195	205	245	222.5	234.3	5	–	–	250	151	43	95	47.5	2	12	–	38	28	–	–	–	–	–	–	–	M10	-
200	210	250	227.5	239.3	5	–	–	255	151	43	95	47.5	2	12	–	38	28	–	–	–

Dimensions in millimeter