Pulley code

Wire rope diameter
d(mm)

Main dimensions (mm) for hot rolled pulley wheel

Recommended
bearing model

Web thickness
(mm)

D

D1

R

b

W

f

D2

D3

B

ZZ1321

10-14

450

495

7

37

28

8

55

63

64

211

14

ZZ1322

60

69

66

212

14

ZZ1323

65

75

68

213

14

ZZ1324

70

80

70

214

14

ZZ2321

>14-19

560

620

10

50

38

8

80

90

74

216

16

ZZ2322

85

96

78

217

16

ZZ2323

90

102

82

218

16

ZZ2324

95

108

86

219

16

ZZ3321

>19-24

710

781

12

60

46

10

95

108

90

219

18

ZZ3322

100

113

94

220

ZZ3323

110

124

102

222

18

ZZ3324

120

135

106

224

16

ZZ4321

>24-30

900

990

15

73

57

10

130

146

106

226

20

ZZ4322

140

158

110

228

20

ZZ4323

150

170

116

230

20

ZZ4324

160

180

122

232

20

ZZ5321

>30-37

1120

1232

19

92

72

12

160

188

128

NJ232

22

ZZ5322

170

202

136

NJ234

22

ZZ5323

180

212

136

NJ236

22

ZZ5324

190

225

142

NJ238

22

ZZ6321

>37-42

1250

1376

22

104

82

12

160

188

128

NJ232

25

ZZ6322

170

202

136

NJ234

25

ZZ6323

180

212

136

NJ236

25

ZZ6324

190

225

142

NJ238

25

ZZ7321

>42-50

1600

1752

26

123

98

14

190

225

148

NJ238

25

ZZ7322

200

235

154

NJ240

25

ZZ7323

220

260

168

NJ244

25

ZZ7324

240

278

182

NJ248

25

ZZ8321

>50-58

1800

1972

29

135

110

14

190

225

148

NT238

25

ZZ8322

200

235

154

NJ240

25

ZZ8323

220

260

168

NJ244

25

ZZ8324

240

278

182

NJ248

25