FKCDZ Series Counter-Rotating Axial Mine Exhaust Fan

Product Applications: High-Temperature, Corrosion & Special Environment Customization Metal & Non-Metal Mining Tunnel & Underground

The FKCDZ series is a high-performance counter-rotating axial-flow fan refined from conventional mine units. Four hub ratios (0.40 / 0.45 / 0.54 / 0.62) with 4–12-pole motors cover a broad pressure–flow range. A flow-stabilization ring removes stall humps, while twisted aerofoils boost efficiency and suppress noise. Its compact, direct-drive construction eases upkeep and fits surface or underground duty as main, auxiliary, or multi-stage ventilation in non-coal mines.

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I. Overview

The FKCDZ series mine exhaust counter-rotating axial-flow fan (hereinafter “the fan”) is an upgraded design derived from earlier mining fans through technical improvements, structural refinement, and an expanded size range. The fan delivers higher efficiency, lower noise, a broader performance envelope, and markedly improved energy savings. A built-in flow-stabilization ring eliminates the “hump” in the characteristic curve, guaranteeing stable operation under any resistance condition.

To cover every resistance and airflow requirement of small, medium, and large non-coal mines—and to ensure continuous high-efficiency running as main fans, auxiliary fans, or multi-stage station fans—the series adopts four hub ratios (0.40 / 0.45 / 0.54 / 0.62) in a counter-rotating configuration. Combined with 4-, 6-, 8-, 10-, or 12-pole motors, more than 200 specifications are available, enabling optimal matching with ventilation networks nationwide.

(1) Fan Model Designation

F K C D Z №X / 2×Y

Symbol	Meaning
F	Fan
K	Mine application
C	Exhaust (induced-draft)
D	Counter-rotating
Z	Axial-flow
№ X	Size code (impeller diameter, dm)
/ 2×Y	Installed power (kW)

(2) Normal Operating Conditions

a) Altitude ≤ 1000 m
b) Ambient temperature −20 °C to +40 °C
c) Relative humidity ≤ 95 % RH (at +25 °C)
d) Installed in mines where the conveyed air contains no methane or other explosive gases

II. Purpose

Specially engineered for the ventilation needs of non-coal mines in metallurgy, chemical, building-materials, nuclear, and related sectors, the fan may serve as a main or auxiliary unit. It can be mounted on the surface or underground and excels in multi-fan parallel/series multi-stage station systems. The standard installation is horizontal; design service life is 15 years, with safe continuous operation ≥ 12 000 h before first major overhaul.

III. Features

Twisted aerofoil blades deliver high aerodynamic efficiency and outstanding energy savings.
Wide performance range & full size set: matches any resistance/flow network for long-term high-efficiency running.
Flow-stabilization ring: eliminates stall humps, prevents surge, and supports multi-fan combined operation.
Direct motor–impeller drive: high stability, easy installation, low system loss, no belt/long-shaft failures, immune to minor foundation settlement.
Compact, welded steel construction: moisture-resistant, high strength, blast-wave tolerant—ideal for surface or underground, especially multi-stage stations.
Reverse flow capability: reversible for emergency ventilation, with reverse-flow rate > 40 %, no separate reversal drift needed.
Adjustable blade setting angle: allows on-site tuning to production changes.
Minimal civil engineering: reduces capital outlay.
Low noise.

IV. Fan Structure

The FKCDZ adopts a direct-drive layout: motor and impeller are housed within a welded steel casing for a compact, rigid assembly. The optional flow-stabilization ring removes performance humps. Two impellers (stages I & II) mount close-coupled on their respective motors to form a counter-rotating pair. A complete surface installation comprises six sections: inlet bellmouth, stage I housing, stage II housing, diffuser, (optional) diffuser tower, and an optional flat car. All fan casings split horizontally; upper and lower halves are flanged, sealed with gaskets, and bolted for airtight integrity.

Table of Main Technical Parameters for FKCDZ Series Fans

Model	Airflow (m3/s)	Total Pressure (Pa)	Power (kW)	Max. Fan Unit Efficiency (%)
15	18.2~43.6	382~1690	2×37	≥80
16	22.1~52.9	435~1923	2×55	≥80
17	26.5~63.5	491~2171	2×75	≥80
18	31.5~75.4	551~2433	2×90	≥80
19	37.0~88.6	614~2711	2×132	≥80
20	43.2~103.4	680~3004	2×160	≥80
21	50.0~119.7	750~3312	2×200	≥80
12	10.7~27.6	698~1374	2×22	≥80
13	13.6~35.0	819~1613	2×37	≥80
14	17.0~43.8	950~1871	2×55	≥80
15	20.9~53.8	1091~2148	2×75	≥80
16	25.4~65.3	1241~2444	2×90	≥80
17	30.4~78.3	1400~2759	2×132	≥80
18	36.1~93.5	1570~3093	2×160	≥80
19	42.5~109.4	1750~3446	2×200	≥80
20	49.5~127.6	1939~3819	2×250	≥80
12	6.2~23.4	411~1815	2×18.5	≥80
13	7.9~29.8	482~2130	2×30	≥80
14	9.9~37.2	600~2470	2×37	≥80
15	12.2~45.8	682~2836	2×55	≥80
16	14.8~55.5	730~3227	2×75	≥80
17	17.8~66.6	825~3643	2×110	≥80
18	21.1~79.1	924~4080	2×132	≥80
19	23.8~92.0	1030~4560	2×185	≥80
20	28.9~108.5	1141~5042	2×200	≥80
21	33.5~125.6	1258~5560	2×280	≥80
22	38.5~144.4	1380~6100	2×355	≥80
12	7.6~22.0	333~1280	2×18.5	≥80
13	9.7~28.0	375~1500	2×30	≥80
14	12.1~35.0	480~1700	2×37	≥80
15	14.9~43.1	521~2000	2×55	≥80
16	18.0~52.3	592~2275	2×75	≥80
17	21.6~62.7	669~2569	2×110	≥80
18	25.7~74.4	750~2880	2×132	≥80
19	30.0~87.5	835~3209	2×185	≥80
20	35.2~102.0	925~3555	2×220	≥80
21	40.0~118.2	1020~3920	2×280	≥80
22	46.9~135.9	1120~4302	2×355	≥80
12	5.5～20.5	500～2200	2×30	≥80
13	7.0～26.5	600～2600	2×37	≥80
14	10.1～31.7	918～2888	2×55	≥80
15	12.4～39.0	1054～3315	2×75	≥80
16	15.0～47.3	1199～3772	2×110	≥80
17	18.0～56.8	1353～4258	2×132	≥80
18	21.4～67.4	1517～4774	2×185	≥80
19	25.1～79.3	1690～5319	2×220	≥80
20	29.3～92.5	1873～5893	2×250	≥80
21	33.9～107.0	2065～6497	2×355	≥80
12	7.0～19.2	377～1555	2×18.5	≥80
13	8.1～24.4	442～1835	2×30	≥80
14	10.1～30.5	513～2130	2×37	≥80
15	14.5～36.6	805～2335	2×55	≥80
16	17.6～44.4	916～2656	2×75	≥80
17	21.1～53.3	1035～2999	2×90	≥80
18	25.0～63.3	1160～3362	2×132	≥80
19	29.4～74.4	1292～3746	2×160	≥80
20	34.3～86.8	1432～4150	2×220	≥80
21	39.7～100.5	1579～4576	2×280	≥80
18	23.5~56.1	306~1350	2×37	≥80
19	27.6~66.0	341~1504	2×55	≥80
20	32.2~77.0	377~3334	2×75	≥80
21	37.3~89.1	416~1838	2×90	≥80
22	42.8~102.5	457~2017	2×110	≥80
23	48.9~117.1	499~2204	2×132	≥80
24	55.6~133.0	543~2400	2×160	≥80
25	62.9~150.4	589~2605	2×200	≥80
26	73.6~169.5	627~2710	2×250	≥80
16	18.9~48.7	688~1356	2×37	≥80
17	22.7~58.4	777~1531	2×55	≥80
18	26.9~69.3	871~1716	2×75	≥80
19	31.6~81.5	971~1912	2×90	≥80
20	36.9~95.1	1076~2119	2×110	≥80
21	42.7~110.1	1186~2336	2×160	≥80
22	49.1~126.6	1302~2563	2×200	≥80
16	11.4~42.8	434~1920	2×30	≥80
17	13.7~51.4	490~2165	2×45	≥80
18	16.3~61.0	549~2427	2×75	≥80
19	19.1~71.7	620~2704	2×90	≥80
20	22.0~83.6	695~2996	2×110	≥80
21	25.8~96.8	748~3303	2×132	≥80
22	29.7~111.3	821~3625	2×160	≥80
23	33.9~127.2	900~3962	2×200	≥80
24	38.5~144.5	976~4314	2×250	≥80
25	42.5~163.3	1060~4681	2×315	≥80
26	49.0~183.7	1146~5063	2×355	≥80
27	54.9~205.7	1236~5460	2×450	≥80
28	61.2~233.5	1329~5872	2×560	≥80
16	13.9~40.3	350~1352	2×37	≥80
17	16.7~48.0	397~1530	2×45	≥80
18	18.8~57.0	445~1711	2×75	≥80
19	23.3~67.5	496~1907	2×90	≥80
20	27.2~78.7	550~2140	2×110	≥80
21	31.0~91.5	606~2350	2×132	≥80
22	36.2~104.7	665~2556	2×160	≥80
23	41.3~119.7	727~2794	2×200	≥80
24	47.0~136.0	792~3042	2×250	≥80
25	53.1~153.7	850~3300	2×315	≥80
26	59.7~172.9	929~3570	2×355	≥80
27	66.9~193.6	1002~3850	2×450	≥80
28	74.6~215.9	1010~4141	2×560	≥80
16	9.0～37.4	550～2300	2×55	≥80
17	13.6～42.9	772～2428	2×55	≥80
18	16.1～50.9	865～2722	2×75	≥80
19	19.0～60.0	964～3033	2×110	≥80
20	22.1～69.8	1068～3360	2×132	≥80
21	25.6～80.8	1177～3705	2×160	≥80
22	29.5～92.9	1292～4066	2×200	≥80
23	33.7～106.2	1412～4444	2×250	≥80
24	38.2～120.7	1538～4839	2×315	≥80
25	43.2～136.4	1669～5250	2×315	≥80
26	48.6～153.4	1805～5679	2×450	≥80
27	54.4～171.8	1946～6124	2×450	≥80
28	60.7～191.6	2093～6586	2×710	≥80
16	11.6～34.5	400～1574	2×30	≥80
17	14.0～42.0	450～1777	2×45	≥80
18	18.9～47.8	661～1917	2×55	≥80
19	22.2～56.2	737～2136	2×75	≥80
20	25.9～65.5	816～2367	2×90	≥80
21	30.0～75.9	900～2609	2×132	≥80
22	34.5～87.2	988～2863	2×160	≥80
23	39.4～99.7	1080～3130	2×185	≥80
24	44.8～113.2	1176～3408	2×220	≥80
25	50.6～128.0	1276～3698	2×280	≥80
26	56.9～144.0	1380～3999	2×355	≥80
27	63.7～161.0	1488～4313	2×355	≥80
28	71.1～179.8	1600～4638	2×450	≥80
20	17.8～66.7	450～1950	2×55	≥80
21	20.6～77.2	475～2100	2×75	≥80
22	23.7～88.7	545～2304	2×90	≥80
23	27.0～101.4	595～2519	2×110	≥80
24	30.7～115.2	621～2742	2×132	≥80
25	34.7～130.2	695～2976	2×160	≥80
26	39.1～146.5	728～3440	2×200	≥80
27	43.7～164.0	786～3471	2×220	≥80
28	48.8～183.0	845～3733	2×315	≥80
29	54.2～203.3	910～4004	2×355	≥80
30	60.0～225.0	1000～4285	2×400	≥80
31	66.2～248.3	1050～4675	2×450	≥80
32	72.8～273.1	1100～4875	2×560	≥80
33	79.9～299.5	1174～5185	2×630	≥80
20	21.7～62.7	350～1343	2×55	≥80
21	25.0～73.0	385～1480	2×75	≥80
22	28.8～83.5	405～1625	2×90	≥80
23	32.9～95.4	462～1776	2×110	≥80
24	37.4～108.4	500～1934	2×132	≥80
25	42.3～122.5	546～2098	2×160	≥80
26	47.6～137.8	560～2270	2×200	≥80
27	53.3～154.3	637～2447	2×220	≥80
28	59.4～172.1	685～2632	2×315	≥80
29	66.0～191.2	735～2800	2×355	≥80
30	73.0～211.7	786～3022	2×400	≥80
31	80.7～233.6	840～3250	2×450	≥80
32	88.7～256.9	895～3438	2×560	≥80
33	97.3～280.0	952～3656	2×630	≥80
20	17.6～55.7	679～2136	2×75	≥80
21	20.4～64.4	748～2355	2×90	≥80
22	23.5～74.1	821～2585	2×110	≥80
23	26.8～84.7	898～2825	2×132	≥80
24	30.5～96.2	978～3076	2×160	≥80
25	34.5～108.7	1061～3338	2×185	≥80
26	38.8～122.3	1147～3610	2×250	≥80
27	43.4～137.0	1237～3893	2×250	≥80
28	48.4～152.8	1331～4187	2×315	≥80
29	53.8～169.7	1427～4491	2×355	≥80
30	59.5～187.9	1527～4806	2×450	≥80
31	57.0～220.0	1200～5400	2×560	≥80
32	72.3～228.0	1738～5468	2×560	≥80
33	67.0～260.0	1350～6050	2×710	≥80
34	86.7～273.4	1962～6173	2×800	≥80
35	81.0～315.0	1550～6750	2×900	≥80
36	102.9～324.7	2199～6921	2×1000	≥80
21	23.9～60.5	572～1659	2×75	≥80
22	27.5～69.5	628～1820	2×75	≥80
23	31.4～79.5	686～1990	2×90	≥80
24	35.7～90.3	747～2166	2×110	≥80
25	40.3～102.1	811～2351	2×160	≥80
26	45.4～114.8	877～2542	2×185	≥80
27	50.8～128.6	946～2742	2×200	≥80
28	56.7～143.4	1017～2949	2×250	≥80
29	63.0～159.3	1091～3163	2×250	≥80
30	69.7～176.4	1168～3385	2×315	≥80
31	67.3～203.4	930～3757	2×400	≥80
32	84.6～214.0	1329～3851	2×450	≥80
33	81.2～242.4	1077～4257	2×560	≥80
34	101.5～256.7	1500～4348	2×560	≥80
35	100.0～290.0	1211～4790	2×800	≥80
36	120.4～304.7	1682～4874	2×710	≥80
34	72.5～272.0	890～3796	2×400	≥80
35	79.1～296.8	900～4023	2×500	≥80
36	86.1～322.9	963～4256	2×560	≥80
37	93.5～348.6	1010～4510	2×630	≥80
38	101.3～379.8	1073～4742	2×710	≥80
39	109.5～410.6	1100～4995	2×800	≥80
40	118.1～440.0	1189～5254	2×900	≥80
34	88.4～256.0	697～2700	2×400	≥80
35	96.4～279.2	738～2837	2×500	≥80
36	104.9～303.8	781～3000	2×560	≥80
37	113.9～329.9	825～3170	2×630	≥80
38	120.0～357.3	830～3344	2×710	≥80
39	133.4～386.3	917～3522	2×800	≥80
40	140.0～416.8	964～3705	2×900	≥80
24	25.3～79.9	674～2122	2×110	≥80
25	28.6～90.3	732～2302	2×110	≥80
26	32.2～101.6	791～2490	2×132	≥80
27	36.1～113.8	853～2685	2×160	≥80
28	40.2～126.9	918～2888	2×200	≥80
29	44.7～140.9	985～3098	2×200	≥80
30	49.5～156.0	1054～3315	2×250	≥80
31	49.0～180.0	820～3700	2×315	≥80
32	60.0～189.4	1199～3772	2×355	≥80
33	53.0～209.0	1050～4300	2×400	≥80
34	72.0～227.1	1353～4258	2×450	≥80
35	62.5～260.0	1150～4800	2×500	≥80
36	85.5～269.6	1517～4774	2×560	≥80
37	79.5～305.0	1250～5300	2×630	≥80
38	100.5～317.1	1690～5319	2×800	≥80
39	95.0～360.0	1380～5940	2×900	≥80
40	171.2～370.0	1873～5893	2×1000	≥80
24	26.0～78.4	385～1553	2×75	≥80
25	33.5～84.8	559～1621	2×110	≥80
26	37.7～95.3	605～1754	2×110	≥80
27	42.2～106.8	652～1891	2×132	≥80
28	47.1～119.1	702～2034	2×160	≥80
29	52.3～132.3	753～2182	2×160	≥80
30	57.9～146.5	806～2335	2×200	≥80
31	57.5～168.0	635～2590	2×250	≥80
32	70.3～177.7	916～2656	2×250	≥80
33	67.5～203.8	743～2936	2×315	≥80
34	84.3～213.2	1035～2999	2×315	≥80
35	80.5～240.5	835～3303	2×450	≥80
36	100.0～253.1	1160～3362	2×450	≥80
37	95.1～287.3	934～3690	2×560	≥80
38	117.6～297.6	1292～3746	2×560	≥80
39	112.5～342.5	1037～4160	2×710	≥80
40	137.2～347.2	1432～4150	2×710	≥80

ISO 14001:2015

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