Queeny M74fd Mechanical Seal Replace Burgmann M74D with Screw Pumping

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Equivalent to:

● Eagle Burgmann M74D

Operating Limits:

● Temperature: -20℃ - +220℃

● Pressure：≤ 16bar

● Speed: ≤ 20m/s

● Shaft Size: 18mm -100mm

Materials:

● Seal Rings: Resin Carbon, Antimony Carbon, SIC, SSIC, Tungsten Carbide

● Elastomer: VITON, EPDM, NBR, FFKM, AFLAS

● Metal Part: SS304, SS316, Duplex, Hastelloy C

Assembly Dwg:

Dimensions (mm)

d	d3	d6	d7	d8	l1	l3	l8	l9
18	33	27	33	3	61.0	38	19.5	11.5
20	35	29	35	3	61.0	38	19.5	11.5
22	37	31	37	3	61.0	38	19.5	11.5
24	39	33	39	3	61.0	38	19.5	11.5
25	40	34	40	3	61.0	38	19.5	11.5
28	43	37	43	3	62.0	39	19.5	11.5
30	45	39	45	3	62.0	39	19.5	11.5
32	47	42	48	3	62.0	39	19.5	11.5
33	48	42	48	3	62.0	39	19.5	11.5
35	50	44	50	3	62.0	39	19.5	11.5
38	55	49	56	4	69.0	41	22.0	14.0
40	57	51	58	4	70.0	42	22.0	14.0
43	60	54	61	4	70.0	42	22.0	14.0
45	62	56	63	4	70.0	42	22.0	14.0
48	65	59	66	4	70.0	42	22.0	14.0
50	67	62	70	4	73.0	43	23.0	15.0
53	70	65	73	4	73.0	43	23.0	15.0
55	72	67	75	4	73.0	43	23.0	15.0
58	79	70	78	4	86.0	56	23.0	15.0
60	81	72	80	4	86.0	56	23.0	15.0
63	84	75	83	4	85.0	55	23.0	15.0
65	86	77	85	4	85.0	55	23.0	15.0
68	89	81	90	4	91.0	55	26.0	18.0
70	91	83	92	4	92.0	56	26.0	18.0
75	99	88	97	4	92.0	56	26.0	18.0
80	104	95	105	4	92.5	56	26.2	18.2
85	109	100	110	4	92.5	56	26.2	18.2
90	114	105	115	4	92.5	56	26.2	18.2
95	119	110	120	4	90.5	56	25.2	17.2
100	124	115	125	4	90.5	56	25.2	17.2

Related Introduction

Mechanical seal requirements for machine accuracy (take mechanical seals for pumps as an example)

(1) The maximum radial runout tolerance of the shaft (or sleeve) where the mechanical seal is installed does not exceed 0.04～0.06MM.

(2) The axial movement of the rotor does not exceed 0.3MM.

(3) The runout tolerance of the positioning end facing the shaft (or sleeve) surface of the sealing cavity and the sealing end cover is no more than 0.04～0.06MM.

Confirmation of seals

(1) Confirm whether the installed seal is consistent with the required model.

(2) Check carefully with the final assembly drawing before installation, and check whether the number of parts is complete.

(3) The mechanical seal is driven by a parallel spring. The spring can be divided into left and right rotation, which must be selected according to the rotation direction of the shaft.

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