QJ series crane gear reducers

 

 

 

QJ series crane gear reducers

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QJ Series crane gear reducers

Features:

1. Wide deceleration range and rated speed ratio of 10-200;
2. Mechanical transmission efficiency, grade 2, 96%, III, 94%
3. Stable operation and low noise.
4. Since 42crmo.35crmo is used for forging, quenching and tempering to produce gear shaft and gear respectively, the service life is long and the bearing capacity is high
5. Easy to disassemble and install

description

PARAMETERS：

QJR(QJB)减速器的外形尺寸
QJR(QJB) outline size                         (mm)
nominal center distance/a1
a2
a02
input shaft end
L
H
n
K
b00 -0.5
f0+0.1
g
(h9)
d4
e20
s
r
e1
weight/kg
d2
(r6)
L2
140
100
240
22
50
505
320
120
130
190
16
130
12
320
12
170
50
59
170
118
288
28
60
600
386
135
140
215
18
150
15
380
14
202
60
85
200
140
340
32
80
707
455
180
195
250
20
170
18
450
17
232
70
133
236
170
406
38
80
828
518
210
225
300
20
200
18
530
17
272
85
240
280
200
480
48
110
974
584
235
250
335
25
240
22
630
22
314
100
330
335
236
571
55
110
1156
735
255
280
400
25
270
26
750
27
375
120
590
400
280
680
65
140
1387
867
285
340
475
30
320
33
900
27
447
140
850
450
315
765
80
170
1547
990
310
365
530
30
360
33
1000
32
506
160
1300
500
355
855
90
170
1720
1130
350
410
600
40
400
39
1120
32
554
180
1760
560
400
960
100
210
1922
1270
385
445
670
40
430
39
1250
37
626
200
2600
630
450
1080
110
210
2156
1380
425
495
750
40
480
45
1400
37
704
225
3550
710
500
1210
120
210
2433
1540
450
565
850
50
530
45
1600
42
781
250
4900
800
560
1360
130
250
2739
1712
490
615
950
50
580
52
1800
42
880
280
6600
900
630
1530
150
250
3043
1910
540
670
1060
50
650
62
2000
47
978
320
9200
1000
710
1710
170
300
3384
2150
610
740
1180
60
720
70
2240
55
1074
360
12000

model mark

qj reducer

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