圆弧齿带轮直径(JB/T 7512.2—1994)　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　mm

齿数

节径d

外径d₀

齿数

节径d

外径d₀

齿数

节径d

外径d₀

齿数

节径d

外径d₀

齿数

节径d

外径d₀

3M

10

9.55

8.79

39

37.24

36.48

68

64.94

64.17

97

92.63

91.87

126

120.32

119.56

11

10.50

9.74

40

38.20

37.44

69

65.89

65.13

98

93.58

92.82

127

121.28

120.51

12

11.46

10.70

41

39.15

38.39

70

66.85

66.08

99

94.54

93.78

128

122.23

121.47

13

12.41

11.65

42

40.11

39.35

71

67.80

67.04

100

95.49

94.73

129

123.19

122.42

14

13.37

12.61

43

41.06

40.30

72

68.75

67.99

101

96.45

95.69

130

124.14

123.38

15

14.32

13.56

44

42.02

41.25

73

69.71

68.95

102

97.40

96.64

131

125.10

124.33

16

15.28

14.52

45

42.97

42.21

74

70.66

69.90

103

98.36

97.60

132

126.05

125.29

17

16.23

15.47

46

43.93

43.16

75

71.62

70.86

104

99.51

98.55

133

127.01

126.24

18

17.19

16.43

47

44.88

44.12

76

72.57

71.81

105

100.27

99.51

134

127.96

127.20

19

18.14

17.38

48

45.84

45.07

77

73.53

72.77

106

101.22

100.46

135

128.92

128.15

20

19.10

18.34

49

46.79

46.03

78

74.48

73.72

107

102.18

101.42

136

129.87

129.11

21

20.05

19.29

50

47.75

46.98

79

75.44

74.68

108

103.13

102.37

137

130.83

130.06

22

21.01

20.25

51

48.70

47.94

80

76.39

75.63

109

104.09

103.33

138

131.78

131.02

23

21.96

21.20

52

49.66

48.89

81

77.35

76.59

110

105.04

104.28

139

132.74

131.97

24

22.92

22.16

53

50.61

49.85

82

78.30

77.54

111

106.00

105.24

140

133.69

132.93

25

23.87

23.11

54

51.57

50.80

83

79.26

78.50

112

106.95

106.19

141

134.65

133.88

26

24.83

24.07

55

52.52

51.76

84

80.21

79.45

113

107.91

107.15

142

135.60

134.84

27

25.78

25.02

56

53.48

52.71

85

81.17

80.41

114

108.86

108.10

143

136.55

135.79

28

26.74

25.98

57

54.43

53.67

86

82.12

81.36

115

109.82

109.05

144

137.51

136.75

29

27.69

26.93

58

55.39

54.62

87

83.08

82.32

116

110.77

110.01

145

138.46

137.70

30

28.65

27.89

59

56.34

55.58

88

84.03

83.27

117

111.73

110.96

146

139.42

138.66

31

29.60

28.84

60

57.30

56.53

89

84.99

84.23

118

112.68

111.92

147

140.37

139.61

32

30.56

29.80

61

58.25

57.49

90

85.94

85.18

119

113.64

112.87

148

141.33

140.57

33

31.51

30.75

62

59.2

58.44

91

86.90

86.14

120

114.59

113.83

149

142.28

141.52

34

32.47

31.71

63

60.16

59.40

92

87.85

87.09

121

115.55

114.78

150

143.24

142.48

35

33.42

32.66

64

61.12

60.35

93

88.81

88.05

122

116.50

115.74

36

34.38

33.62

65

62.07

61.31

94

89.76

89.00

123

117.46

116.69

37

35.33

34.57

66

63.03

62.26

95

90.72

89.96

124

118.41

117.65

38

36.29

35.53

67

63.98

63.22

96

91.67

90.91

125

119.37

118.60

5M

13

20.69

19.55

43

68.44

67.30

73

116.18

115.04

103

163.93

162.79

133

211.68

210.54

14

22.28

21.14

44

70.03

68.89

74

117.77

116.63

104

165.52

164.38

134

213.27

212.13

15

23.87

22.73

45

71.62

70.48

75

119.37

118.23

105

167.11

165.97

135

214.86

213.72

16

25.46

24.32

46

73.21

72.07

76

120.96

119.82

106

168.70

167.56

136

216.45

215.31

17

27.06

25.92

47

74.80

73.66

77

122.55

121.41

107

170.30

169.16

137

218.04

216.90

18

28.65

27.51

48

76.39

75.25

78

124.14

123.00

108

171.89

170.75

138

219.63

218.49

19

30.24

29.10

49

77.99

76.85

79

125.73

124.59

109

173.49

172.34

139

221.23

220.09

20

31.83

30.69

50

79.58

78.94

80

127.32

126.18

110

175.07

173.93

140

222.82

221.66

21

33.42

32.28

51

81.17

80.03

81

128.92

127.78

111

176.66

175.52

141

224.41

223.27

22

35.01

33.87

52

82.76

81.62

82

130.51

129.37

112

178.25

177.11

142

226.00

224.86

23

36.61

35.47

53

84.35

83.21

83

132.10

130.96

113

179.85

178.71

143

227.59

226.45

24

38.20

37.06

54

85.94

84.80

84

133.69

132.55

114

181.44

180.30

144

229.18

228.04

25

39.79

38.65

55

87.54

86.40

85

135.28

134.14

115

183.03

181.89

145

230.77

229.63

26

41.38

40.24

56

89.13

87.99

86

136.87

135.73

116

184.62

183.48

146

232.37

231.23

27

42.97

41.83

57

90.72

89.58

87

138.46

137.32

117

186.21

185.07

147

233.96

232.62

28

44.56

43.42

58

92.31

91.17

88

140.06

138.92

118

187.80

186.66

148

235.55

234.41

29

46.15

45.01

59

93.90

92.76

89

141.65

140.51

119

189.39

188.25

149

237.14

236.00

30

47.75

46.61

60

95.49

94.35

90

143.24

142.10

120

190.99

189.85

150

238.73

237.59

31

49.34

48.20

61

97.08

95.94

91

144.83

143.69

121

192.58

191.44

151

240.32

239.18

32

50.93

49.79

62

98.68

97.54

92

146.42

145.28

122

194.17

193.03

152

241.92

240.78

33

52.52

51.38

63

100.27

99.13

93

148.01

146.87

123

195.76

194.62

153

243.51

242.37

34

54.11

52.97

64

101.86

100.72

94

149.61

148.47

124

197.35

196.21

154

245.10

243.96

35

55.70

54.56

65

103.45

102.31

95

151.20

150.06

125

198.94

197.80

155

246.69

245.55

36

57.30

56.16

66

105.04

103.90

96

152.79

151.65

126

200.54

199.40

156

248.28

247.14

37

58.89

57.75

67

106.63

105.49

97

154.38

153.24

127

202.13

200.99

157

249.87

248.73

38

60.48

59.34

68

108.23

107.09

98

155.97

154.83

128

203.72

202.58

158

251.46

250.32

39

62.07

60.93

69

109.82

108.68

99

157.56

156.42

129

205.31

204.17

159

253.06

251.92

40

63.66

62.52

70

111.41

110.27

100

159.15

158.01

130

206.90

205.76

160

254.65

253.51

41

65.25

64.11

71

113.00

111.86

101

160.75

159.61

131

208.49

207.35

42

66.85

65.71

72

114.59

113.45

102

162.34

161.20

132

210.08

208.94

8M

22

56.02

54.65

57

145.15

143.78

92

234.28

232.90

127

323.44

322.03

162

412.58

411.18

23

58.57

57.20

58

147.70

146.32

93

236.82

235.45

128

325.95

324.55

163

415.08

413.70

24

61.12

59.74

59

150.24

148.87

94

239.37

238.00

129

328.50

327.12

164

417.62

416.25

25

63.66

62.28

60

152.79

151.42

95

241.92

240.54

130

331.04

329.67

165

420.17

418.80

26

66.21

64.85

61

155.34

153.96

96

244.46

243.09

131

333.59

332.22

166

422.72

421.34

27

68.75

67.39

62

157.88

156.51

97

247.01

245.64

132

336.14

334.76

167

425.26

423.89

28

71.30

70.08

63

160.43

159.06

98

249.55

248.18

133

338.68

337.31

168

427.81

426.44

29

73.85

72.62

64

162.97

161.60

99

252.10

250.73

134

341.23

339.86

169

430.35

428.98

30

76.39

75.13

65

165.52

164.15

100

254.65

253.28

135

343.77

342.40

170

432.90

431.53

31

78.94

77.65

66

168.07

166.70

101

257.19

255.82

136

346.32

344.95

171

435.45

434.08

32

81.49

80.16

67

170.61

169.24

102

259.74

258.37

137

348.87

347.50

172

437.99

436.62

33

84.03

82.68

68

173.16

171.79

103

262.29

260.92

138

351.41

350.04

173

440.54

439.17

34

86.53

85.22

69

175.71

174.34

104

264.83

263.46

139

353.96

352.59

174

443.09

441.72

35

59.13

87.76

70

178.25

176.88

105

267.38

266.01

140

356.51

355.14

175

445.63

444.26

36

91.67

90.30

71

180.80

179.43

106

269.93

268.56

141

359.05

357.68

176

448.18

446.81

37

94.22

92.85

72

183.35

181.97

107

272.47

271.10

142

361.60

360.23

177

450.73

449.36

38

96.77

95.39

73

185.89

184.52

108

275.02

273.65

143

364.15

362.77

178

453.27

451.90

39

99.31

97.94

74

188.44

187.07

109

277.57

276.19

144

366.69

365.32

179

455.82

454.45

40

101.86

100.49

75

190.99

189.61

110

280.11

278.74

145

369.24

367.87

180

458.37

456.99

41

104.41

103.03

76

193.53

192.16

111

282.66

281.29

146

371.79

370.41

181

460.91

459.54

42

106.95

105.58

77

196.08

194.71

112

285.21

283.83

147

374.33

372.96

182

463.46

462.09

43

109.50

108.13

78

198.63

197.25

113

287.75

286.38

148

376.88

375.51

183

466.01

464.63

44

112.05

110.07

79

201.17

199.01

114

290.30

288.94

149

379.43

377.05

184

468.55

467.18

45

114.59

113.22

80

203.72

202.35

115

292.85

291.47

150

381.97

380.60

185

471.10

469.73

46

117.14

115.77

81

206.26

204.89

116

295.39

294.02

151

384.52

383.45

186

473.65

472.27

47

119.68

118.31

82

208.81

207.44

117

297.94

296.57

152

387.06

385.70

187

476.19

474.62

48

122.23

120.86

83

211.36

209.99

118

300.48

299.11

153

389.61

388.24

188

478.74

477.37

49

124.78

123.41

84

213.90

212.53

119

303.03

301.66

154

392.16

390.79

189

481.28

479.91

50

127.32

125.95

85

216.45

215.08

120

305.58

304.21

155

394.70

393.33

190

483.83

482.46

51

129.87

128.50

86

219.00

217.63

121

308.12

306.75

156

397.25

395.88

191

486.38

485.01

52

132.42

131.05

87

221.54

220.17

122

310.67

309.30

157

399.80

398.43

192

488.92

487.55

53

134.96

133.59

88

224.09

222.72

123

313.22

311.85

158

402.34

400.97

54

137.51

136.14

89

226.64

225.27

124

315.76

314.39

159

404.89

403.52

55

140.06

138.68

90

229.18

227.81

125

318.31

316.94

160

407.44

406.07

56

142.60

141.23

91

231.73

230.36

126

320.86

319.48

161

409.98

408.61

14M

28

124.78

122.12

66

294.12

291.32

104

463.46

460.66

142

632.80

630.01

180

802.14

799.35

29

129.23

126.57

67

298.57

295.78

105

467.92

465.12

143

637.26

634.46

181

806.60

803.80

30

133.69

130.99

68

303.03

300.24

106

472.37

469.58

144

641.71

638.92

182

811.05

808.26

31

138.15

135.46

69

307.49

304.69

107

476.83

474.03

145

646.17

643.37

183

815.51

812.72

32

142.60

139.88

70

311.94

309.15

108

481.28

478.49

146

650.63

647.83

184

819.97

817.17

33

147.06

144.36

71

316.40

313.61

109

485.74

482.95

147

655.08

652.29

185

824.42

821.63

34

151.52

148.79

72

320.86

318.06

110

490.20

487.40

148

659.54

656.74

186

828.88

826.08

35

155.98

153.24

73

325.31

322.52

111

494.65

491.86

149

663.99

661.20

187

833.33

830.54

36

160.43

157.68

74

329.77

326.97

112

499.11

496.32

150

668.45

665.66

188

837.79

835.00

37

164.88

162.13

75

334.22

331.43

113

503.57

500.77

151

672.91

670.11

189

842.25

839.45

38

169.34

166.60

76

338.68

335.89

114

508.20

505.23

152

677.36

674.57

190

846.70

843.91

39

173.80

171.02

77

343.14

340.34

115

512.48

509.68

153

681.82

679.03

191

851.16

848.37

40

178.25

175.49

78

347.59

344.80

116

516.93

514.14

154

686.28

683.48

192

855.62

852.82

41

182.71

179.92

79

352.05

349.26

117

521.39

518.60

155

690.73

687.94

193

860.07

857.28

42

187.17

184.37

80

356.51

353.71

118

525.85

523.05

156

695.19

692.39

194

864.53

861.75

43

191.62

188.83

81

360.96

358.17

119

530.30

527.51

157

699.64

696.85

195

868.98

866.44

44

196.08

193.28

82

365.42

362.63

120

534.76

531.97

158

704.10

701.31

196

873.44

870.64

45

200.53

197.74

83

369.88

367.08

121

539.22

536.42

159

708.56

705.76

197

877.90

875.11

46

204.99

202.20

84

374.33

371.54

122

543.67

540.88

160

713.01

710.22

198

882.35

879.55

47

209.45

206.65

85

378.79

375.99

123

548.13

545.34

161

717.47

714.68

199

886.81

884.02

48

213.90

211.11

86

383.24

380.45

124

552.59

549.79

162

721.93

719.13

200

891.27

888.47

49

218.36

215.57

87

387.70

384.91

125

557.04

554.25

163

726.38

723.59

201

895.72

892.94

50

222.82

220.02

88

392.16

389.36

126

561.50

558.70

164

730.84

728.05

202

900.18

897.38

51

227.27

224.48

89

396.61

393.82

127

565.95

563.16

165

735.30

732.50

203

904.64

901.85

52

231.73

228.94

90

401.07

398.28

128

570.41

567.62

166

739.75

736.96

204

909.09

906.30

53

236.19

233.39

91

405.53

402.73

129

574.87

572.07

167

744.21

741.41

205

913.55

910.74

54

240.64