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BT toolholder
BT-ER COLLET CHUCK
  • BT-ER COLLET CHUCK
BT-ER COLLET CHUCK

Internal Wall Precision Grinding

Internal bore undergoes precision grinding to ensure smooth walls for precise fit with collets

Achieves 0.002 high precision, extending tool holder lifespan beyond standard

Surface finish R<0.4

Roundness<0.8

1、Pre-balanced,high precision run-out 0.003mmG2.530000 rpm.

2、High concentricity,stable run-out accuracy for most wide application.

Specifications: BT30/BT40/BT50

Hardness: HRC56-58

Accuracy Grade: G2.5

Runout after integral clamping: 0.001 mm

Penetration depth: >1 mm

Dynamic balance speed: Below 30,000 rpm

Roundness: <0.8

Standard speed: Below 12,000 rpm

Material: 20CrMnTi

BT-ER.jpeg

Specification

Clamping range

 d1

 L

 L1

 M

Nut

 Collet

Spanner

WeightKG)

 BT30

-ER16-70

-ER16-100

3-10

28

70

100

48

78

M22×1.5

ER16A

ER16

ER16A

0.55

0.80

-ER20-70

-ER20-100

3-13

34

70

100

48

78

M25×1.5

ER20A

ER20

ER20A

0.75

0.85

-ER25-70

-ER25-100

3-16

42

70

100

48

78

M32×1.5

ER25UM

ER25

ER25UM

0.70

1.45

-ER32-70

-ER32-100

3-20

50

70

100

48

78

M40×1.5

ER32UM

ER32

ER32UM

0.95

1.05

BT40

-ER16-70

-ER16-100

-ER16-150

3-10

28

70

100

150

43

73

123

M22×1.5

ER16A

ER16

ER16A

1.20
1.30

1.35

-ER20-70

-ER20-100

-ER20-150

3-13

34

70

100

150

43

73

123

M25×1.5

 ER20A

 ER20

 ER20A

1.40
1.50

1.70

-ER25-70

-ER25-100

-ER25-150

 3-16

 42

70

100

150

43

73

123

 M32×1.5

 ER25UM

 ER25

 ER25UM

1.30
1.65

2.25

-ER32-70

-ER32-100

-ER32-150

 3-20

 50

80

100

150

43

73

123

 M40×1.5

 ER32UM

 ER32

 ER32UM

1.30
1.70

2.50

-ER40-100

-ER40-150

6-26

63

100

150

73

123

M50×1.5

ER40UM

ER40

ER40UM

2.05

3.10

BT50

-ER16-100

-ER16-150

3-10

28

100

150

62

112

M22×1.5

ER16A

ER16

ER16A

4.30

4.50

-ER20-100

-ER20-150

3-13

34

100

150

62

112

M25×1.5

ER20A

ER20

ER20A

4.30

4.70

-ER25-100

-ER25-150

3-16

42

100

150

62

112

M32×1.5

ER25UM

ER25

ER25UM

4.40

5.50

-ER32-100

-ER32-150

3-20

50

100

150

62

112

M40×1.5

ER32UM

ER32

ER32UM

4.80

5.30

-ER40-100

-ER40-150

6-26

63

100

150

62

112

M50×1.5

ER40UM

ER40

ER40UM

4.40

5.50

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person: Mr. Gong

Tel: +86 0769-82380083

Mobile phone:+86 15362883951

Email: info@jimmytool.com

Website: www.jimmytool.com

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