ยันศูนย์ตาย (Dead Center) คือ อุปกรณ์ประคองชิ้นงานเครื่องกลึงที่ส่วนหัวไม่หมุนตามชิ้นงาน มักใช้ที่ยันศูนย์ท้าย (Tailstock) มีจุดเด่นด้านความแข็งแรงสูง ให้ความแม่นยำสูงสุด (Runout ต่ำ) และเหมาะกับงานกลึงความเร็วสูง หรือชิ้นงานขนาดเล็ก

Dead centers


Dead centers hardened tool steel

Dead centers with diamond coating

Collet centers

Inserts holder

Reduction sleeves


Positioning driver

Customised products

Full male center A

Full male center A with thread

Full male center B

Full male center B with thread

Full male center long with thread

Half male center

Half male center with thread

Blunt male center

Blunt male center with thread

Blunt half male center

Female center

Female half center

Driver center with thread

Extraction nut for centers

| Taper | D | d | L | l | Article Number | Availability* |
|---|---|---|---|---|---|---|
| Morse 1 | 12.2 | 7 | 80 | 26.5 | 3.8801.001 | ● |
| 14 | 10 | 80 | 26.5 | 5.2501.007 | ● | |
| 14 | 10 | 87 | 33.5 | 5.2501.008 | ● | |
| Morse 2 | 18 | 7 | 100 | 36 | 3.8801.002 | ● |
| 18 | 14 | 135 | 71 | 3.8801.013 | ● | |
| 20 | 15 | 94 | 30 | 3.8801.026 | ● | |
| 20 | 15 | 110.5 | 46.5 | 3.8801.027 | ● | |
| 20 | 11 | 94 | 30 | 5.2501.001 | ● | |
| 20 | 11 | 110.5 | 46.5 | 5.2501.002 | ● | |
| Morse 3 | 24.1 | 11 | 125 | 44.5 | 3.8801.003 | ● |
| 24.1 | 14 | 125 | 44.5 | 3.8801.048 | ● | |
| 24.1 | 14 | 150 | 69.5 | 3.8801.014 | ● | |
| 26 | 20 | 117 | 36.5 | 3.8801.028 | ● | |
| 26 | 20 | 125.5 | 45 | 3.8801.029 | ● | |
| 26 | 15 | 117 | 36.5 | 5.2501.003 | ● | |
| 26 | 15 | 125.5 | 45 | 5.2501.004 | ● | |
| Morse 4 | 31.6 | 15 | 160 | 57.5 | 3.8801.004 | ● |
| 31.6 | 18 | 180 | 77.5 | 3.8801.015 | ● | |
| 31.6 | 18 | 200 | 97.5 | 3.8801.016 | ● | |
| 31.6 | 11 | 160 | 57.5 | 3.8801.049 | ● | |
| 35 | 20 | 160 | 57.5 | 5.2501.005 | ● | |
| 35 | 20 | 195 | 92.5 | 5.2501.006 | ● | |
| Morse 5 | 44.7 | 20 | 200 | 70.5 | 3.8801.005 |
| Taper | Ball Ø D | D | L | L 1 | L 2 | Article number | Availability* |
|---|---|---|---|---|---|---|---|
| Morse 2 | 2.5 | 18 | 108 | 107.0 | 43.0 | 3111.0002 | ● |
| 3 | 18 | 108 | 106.5 | 42,5 | 3111.0003 | ● | |
| 4 | 18 | 108 | 106.0 | 42.0 | 3111.0004 | ● | |
| 5 | 18 | 108 | 105.5 | 41.5 | 3111.0020 | ● | |
| 6 | 18 | 108 | 105.0 | 41.0 | 3111.0005 | ● | |
| 7 | 18 | 108 | 104.5 | 40.5 | 3111.0006 | ● | |
| 8 | 18 | 108 | 104.0 | 40.0 | 3111.0007 | ● | |
| 10 | 18 | 108 | 103.0 | 39.0 | 3111.0008 | ● | |
| 12 | 18 | 108 | 102.0 | 38.0 | 3111.0009 | ● | |
| Morse 3 | 2.5 | 24.1 | 128 | 127.0 | 46.5 | 3112.0002 | ● |
| 3 | 24.1 | 128 | 126.5 | 46.0 | 3112.0003 | ● | |
| 4 | 24.1 | 128 | 126.0 | 45.5 | 3112.0004 | ● | |
| 5 | 24.1 | 128 | 125.5 | 45.0 | 3112.0005 | ● | |
| 6 | 24.1 | 128 | 125.0 | 44.5 | 3112.0006 | ● | |
| 7 | 24.1 | 128 | 124.5 | 44.0 | 3112.0007 | ● | |
| 8 | 24.1 | 128 | 124.0 | 43.5 | 3112.0008 | ● | |
| 10 | 24.1 | 128 | 123.0 | 42.5 | 3112.0009 | ● | |
| 12 | 24.1 | 128 | 122.0 | 41.5 | 3112.0010 | ● | |
| Morse 4 | 2.5 | 31.6 | 158 | 157.0 | 54.3 | 3113.0002 | ● |
| 3 | 31.6 | 158 | 156.5 | 53.8 | 3113.0003 | ● | |
| 4 | 31.6 | 158 | 156.0 | 53.3 | 3113.0004 | ● | |
| 5 | 31.6 | 158 | 155.5 | 52.8 | 3113.0005 | ● | |
| 6 | 31.6 | 158 | 155.0 | 52.3 | 3113.0006 | ● | |
| 7 | 31.6 | 158 | 154.5 | 51.8 | 3113.0007 | ● | |
| 8 | 31.6 | 158 | 154.0 | 51.3 | 3113.0008 | ● | |
| 10 | 31.6 | 158 | 153.0 | 50.3 | 3113.0009 | ● | |
| 12 | 31.6 | 158 | 152.0 | 49.3 | 3113.0010 |
| Taper | Ball Ø D | D | L | L 1 | L 2 | G | Article number | Extraction nut | Availability* |
|---|---|---|---|---|---|---|---|---|---|
| Morse 2 | 2.5 | 18 | 112 | 111.0 | 47.0 | M22 x 1.5 | 3300.0202** | 3.8848.004 | ● |
| 3 | 18 | 112 | 111.0 | 47.0 | M22 x 1.5 | 3300.0203** | 3.8848.004 | ● | |
| 4 | 18 | 112 | 110.0 | 46.0 | M22 x 1.5 | 3300.0204** | 3.8848.004 | ● | |
| 5 | 18 | 112 | 109.5 | 45.5 | M22 x 1.5 | 3300.0205** | 3.8848.004 | ● | |
| 6 | 18 | 112 | 109.0 | 45.0 | M22 x 1.5 | 3300.0206** | 3.8848.004 | ● | |
| 7 | 18 | 112 | 108.5 | 44.5 | M22 x 1.5 | 3300.0207** | 3.8848.004 | ● | |
| 8 | 18 | 112 | 108.0 | 44.0 | M22 x 1.5 | 3300.0208** | 3.8848.004 | ● | |
| 9 | 18 | 112 | 107.5 | 43.5 | M22 x 1.5 | 3300.0209** | 3.8848.004 | ● | |
| 10 | 18 | 112 | 107.0 | 43.0 | M22 x 1.5 | 3300.0210** | 3.8848.004 | ● | |
| 12 | 18 | 112 | 106.0 | 42.0 | M22 x 1.5 | 3300.0212** | 3.8848.004 | ● | |
| Morse 3 | 2.5 | 24.1 | 138 | 137.0 | 56.0 | M27 x 1.5 | 3300.0302** | 3.8848.001 | ● |
| 3 | 24.1 | 138 | 136.5 | 55.5 | M27 x 1.5 | 3300.0303** | 3.8848.001 | ● | |
| 4 | 24.1 | 138 | 136.0 | 55.0 | M27 x 1.5 | 3300.0304** | 3.8848.001 | ● | |
| 5 | 24.1 | 138 | 135.5 | 54.5 | M27 x 1.5 | 3300.0305** | 3.8848.001 | ● | |
| 6 | 24.1 | 138 | 135.0 | 54.0 | M27 x 1.5 | 3300.0306** | 3.8848.001 | ● | |
| 7 | 24.1 | 138 | 134.5 | 53.5 | M27 x 1.5 | 3300.0307** | 3.8848.001 | ● | |
| 8 | 24.1 | 138 | 134.0 | 53.0 | M27 x 1.5 | 3300.0308** | 3.8848.001 | ● | |
| 9 | 24.1 | 138 | 133.5 | 52.5 | M27 x 1.5 | 3300.0309** | 3.8848.001 | ● | |
| 10 | 24.1 | 138 | 133.0 | 52.0 | M27 x 1.5 | 3300.0310** | 3.8848.001 | ● | |
| 12 | 24.1 | 138 | 132.0 | 51.0 | M27 x 1.5 | 3300.0312** | 3.8848.001 | ● | |
| Morse 4 | 2.5 | 31.6 | 175 | 174.0 | 71.5 | M36 x 1.5 | 3300.0402** | 3.8848.002 | ● |
| 3 | 31.6 | 175 | 173.5 | 71.0 | M36 x 1.5 | 3300.0403** | 3.8848.002 | ● | |
| 4 | 31.6 | 175 | 173.0 | 70.5 | M36 x 1.5 | 3300.0404** | 3.8848.002 | ● | |
| 5 | 31.6 | 175 | 172.5 | 70.0 | M36 x 1.5 | 3300.0405** | 3.8848.002 | ● | |
| 6 | 31.6 | 175 | 172.0 | 69.5 | M36 x 1.5 | 3300.0406** | 3.8848.002 | ● | |
| 7 | 31.6 | 175 | 171.5 | 69.0 | M36 x 1.5 | 3300.0407** | 3.8848.002 | ● | |
| 8 | 31.6 | 175 | 171.0 | 68.5 | M36 x 1.5 | 3300.0408** | 3.8848.002 | ● | |
| 9 | 31.6 | 175 | 170.5 | 68.0 | M36 x 1.5 | 3300.0409** | 3.8848.002 | ● | |
| 10 | 31.6 | 175 | 170.0 | 67.5 | M36 x 1.5 | 3300.0410** | 3.8848.002 | ● | |
| 12 | 31.6 | 175 | 169.0 | 66.5 | M36 x 1.5 | 3300.0412** | 3.8848.002 | ● |
MK1 and MK5 versions and ball dimensions 2 / 16 / 20 are available on request.
*Availability legend: ● ex stock ● 2–3 weeks ● 6 weeks / on request
** Please order individual inserts separately.

| Taper | Ball Ø D | D | L | L 1 | L 2 | L 3 | h | Article number | Availability* |
|---|---|---|---|---|---|---|---|---|---|
| Morse 2 | 2.5 | 18 | 108 | 107.0 | 43.0 | 25 | 1.9 | 3211.0002 | ● |
| 3 | 18 | 108 | 106.5 | 42.5 | 25 | 2.2 | 3211.0003 | ● | |
| 4 | 18 | 108 | 106.0 | 42.0 | 25 | 2.7 | 3211.0004 | ● | |
| 5 | 18 | 108 | 105.5 | 41.5 | 25 | 3.2 | 3211.0005 | ● | |
| 6 | 18 | 108 | 105.0 | 41.0 | 25 | 3.8 | 3211.0006 | ● | |
| 7 | 18 | 108 | 104.5 | 40.5 | 25 | 4.3 | 3211.0007 | ● | |
| 8 | 18 | 108 | 104.0 | 40.0 | 25 | 4.8 | 3211.0008 | ● | |
| 10 | 18 | 108 | 103.0 | 39.0 | 25 | 5.9 | 3211.0009 | ● | |
| 12 | 18 | 108 | 102.0 | 38.0 | 25 | 7.0 | 3211.0010 | ● | |
| Morse 3 | 2.5 | 24.1 | 128 | 127.0 | 46.5 | 25 | 1.9 | 3212.0002 | ● |
| 3 | 24.1 | 128 | 126.5 | 46.0 | 25 | 2.2 | 3212.0003 | ● | |
| 4 | 24.1 | 128 | 126.0 | 45.5 | 25 | 2.7 | 3212.0004 | ● | |
| 5 | 24.1 | 128 | 125.5 | 45.0 | 25 | 3.2 | 3212.0005 | ● | |
| 6 | 24.1 | 128 | 125.0 | 44.5 | 25 | 3.8 | 3212.0006 | ● | |
| 7 | 24.1 | 128 | 124.5 | 44.0 | 25 | 4.3 | 3212.0007 | ● | |
| 8 | 24.1 | 128 | 124.0 | 43.5 | 25 | 4.8 | 3212.0008 | ● | |
| 10 | 24.1 | 128 | 123.0 | 42.5 | 25 | 5.9 | 3212.0009 | ● | |
| 12 | 24.1 | 128 | 122.0 | 41.5 | 25 | 7.0 | 3212.0010 | ● | |
| Morse 4 | 2.5 | 31.6 | 158 | 157.0 | 54.3 | 28 | 1.9 | 3213.0002 | ● |
| 3 | 31.6 | 158 | 156.5 | 53.8 | 28 | 2.2 | 3213.0003 | ● | |
| 4 | 31.6 | 158 | 156.0 | 53.3 | 28 | 2.7 | 3213.0004 | ● | |
| 5 | 31.6 | 158 | 155.5 | 52.8 | 28 | 3.2 | 3213.0005 | ● | |
| 6 | 31.6 | 158 | 155 | 52.3 | 28 | 3.8 | 3213.0006 | ● | |
| 7 | 31.6 | 158 | 154.5 | 51.8 | 28 | 4.3 | 3213.0007 | ● | |
| 8 | 31.6 | 158 | 154.0 | 51.3 | 28 | 4.8 | 3213.0008 | ● | |
| 10 | 31.6 | 158 | 153.0 | 50.3 | 28 | 5.9 | 3213.0009 | ● | |
| 12 | 31.6 | 158 | 152.0 | 49.3 | 28 | 7.0 | 3213.0010
|
| Taper | D | L | l | SW | Article number | Availability* |
|---|---|---|---|---|---|---|
| Morse 2 | 18 | 36 | 100 | 16 | 3.8801.039 | ● |
| Morse 3 | 24.1 | 44.5 | 125 | 19 | 3.8801.040 | ● |
| Morse 4 | 31.6 | 57.5 | 160 | 27 | 3.8801.041 |
| Taper | D | d | L | l | l1 | SW | G | Article number | Extraction nut | Availability* |
|---|---|---|---|---|---|---|---|---|---|---|
| Morse 2 | 18 | 9 | 120 | 56 | 17 | 16 | M22 x 1.5 | 3.8801.036** | 3.8848.004 | ● |
| Morse 3 | 24.1 | 9 | 149.5 | 69 | 17 | 19 | M27 x 1.5 | 3.8801.037** | 3.8848.001 | ● |
| Morse 4 | 31.6 | 9 | 190 | 87.5 | 17 | 27 | M36 x 1.5 | 3.8801.038** | 3.8848.002 |
| Taper | D | d | L | l | G | Article number | Extraction nut | Availability* |
|---|---|---|---|---|---|---|---|---|
| Morse 2 | 40 | 10 | 116.5 | 52.5 | M22 x 1.5 | 3.8803.018** | 3.8848.004 | ● |
| 80 | 30 | 134 | 70 | M22 x 1.5 | 3.8803.019** | 3.8848.004 | ● | |
| Morse 3 | 75 | 20 | 155.5 | 75 | M27 x 1.5 | 3.8803.020** | 3.8848.001 | ● |
| 125 | 60 | 164.5 | 84 | M27 x 1.5 | 3.8803.021** | 3.8848.001 | ● | |
| Morse 4 | 75 | 20 | 181 | 78.5 | M36 x 1.5 | 3.8803.022** | 3.8848.002 | ● |
| 125 | 60 | 190 | 87.5 | M36 x 1.5 | 3.8803.023** | 3.8848.002 | ● | |
| Morse 5 | 75 | 20 | 210 | 80.5 | M48 x 1.5 | 3.8803.024** | 3.8848.003 | ● |
| 125 | 60 | 219 | 89.5 | M48 x 1.5 | 3.8803.025** | 3.8848.003 |

| Taper | D | I | L | SW | Article number | Availability* |
|---|---|---|---|---|---|---|
| Morse 2 | 18 | 100 | 36 | 16 | 3.8801.033 | ● |
| Morse 3 | 24.1 | 125 | 44.5 | 19 | 3.8801.034 | ● |
| Morse 4 | 36.1 | 160 | 57.5 | 27 | 3.8801.035 |
| Taper | D | d | L | I | I1 | SW | G | Article number | Extraction nut | Availability* |
|---|---|---|---|---|---|---|---|---|---|---|
| Morse 2 | 18 | 9 | 120 | 56 | 17 | 16 | M22 x 1.5 | 3.8801.030** | 3.8848.004 | ● |
| Morse 3 | 24.1 | 9 | 149.5 | 69 | 17 | 19 | M27 x 1.5 | 3.8801.031** | 3.8848.001 | ● |
| Morse 4 | 36.1 | 9 | 190 | 87.5 | 17 | 27 | M36 x 1.5 | 3.8801.032** | 3.8848.002 |

Collet center incl. clamping nut

Male carbide insert

Female carbide insert

Blunt male center insert

Spring collet

Chuck key
| Type | Holding fixture | D | d | L | I | Article number | Availability* |
|---|---|---|---|---|---|---|---|
| 2-16 | MK2 | 22 | ER16 | 98.5 | 34.5 | 3.8806.001 | ● |
| 3-20 | MK3 | 28 | ER20 | 118.5 | 38 | 3.8806.002 | ● |
| 4-25 | MK4 | 35 | ER25 | 152.5 | 50 | 3.8806.003 |
| Type | D (h6) | L | Article number | Availability* |
|---|---|---|---|---|
| 101 | 6 | 50 | 4.8807.101 | ● |
| 102 | 10 | 57 | 4.8807.102 | ● |
| 103 | 12 | 57 | 4.8807.103 |
| Type | D (h6) | d | d1 | L | Article number | Availability* |
|---|---|---|---|---|---|---|
| 401 | 6 | 4.4 | 1.5 | 50 | 4.8807.401 | ● |
| 402 | 10 | 5.9 | 4.0 | 57 | 4.8807.402 | ● |
| 403 | 12 | 7.9 | 5.7 | 57 | 4.8807.403 |
| Type | D (h6) | d | d1 | L | Article number | Availability* |
|---|---|---|---|---|---|---|
| 401 | 6 | 4.4 | 1.5 | 50 | 4.8807.401 | ● |
| 402 | 10 | 5.9 | 4.0 | 57 | 4.8807.402 | ● |
| 403 | 12 | 7.9 | 5.7 | 57 | 4.8807.403 |
| Type | D (H6) | d | d1 | L | I | I1 | Article number | Availability* |
|---|---|---|---|---|---|---|---|---|
| 301 | 10 | 18 | 7.5 | 47 | 17 | 9 | 4.8807.301 | ● |
| 302 | 10 | 28 | 13.5 | 51 | 21 | 9 | 4.8807.302 | ● |
| 303 | 13 | 38 | 23 | 53 | 23 | 7.5 | 4.8807.303 | ● |
| 304 | 13 | 48 | 32 | 55 | 25 | 7.5 | 4.8807.304 |
Spring collet with max. runout deviation 0.01 mm. Spring collet with marking UP with max. runout deviation 0.005 mm.
For order please indicate type, marking and the demanded clamping diameter.
Part code: ER16-UP 6
| Type | For type | Max. clamping diameter | Availability* |
|---|---|---|---|
| ER16 | 2-16 | 10 | ● |
| ER20 | 3-20 | 13 | ● |
| ER25 | 4-25 | 16 |
The head of the insert holder contains an inner taper to accommodate a range of different inserts. The inserts are ejected using an ejector.
| Taper | D | d | L | I | G | Article number | Availability* |
|---|---|---|---|---|---|---|---|
| Morse 2 | 20 | 11 | 86 | 22 | M22 x 1.5 | 3.8810.004 | ● |
| Morse 3 | 24.1 | 14 | 104.5 | 24 | M27 x 1.5 | 3.8810.001 | ● |
| Morse 4 | 31.6 | 18 | 132.5 | 30 | M36 x 1.5 | 3.8810.002 | ● |
| Morse 5 | 44.7 | 28 | 174.5 | 45 | M48 x 1.5 | 3.8810.003 |

| MKA | MKB | G | Article number | Availability* |
|---|---|---|---|---|
| Morse 3 | Morse 2 | M27 x 1.5 | 3.8901.001** | ● |
| Morse 1 | M27 x 1.5 | 3.8901.007** | ● | |
| Morse 4 | Morse 2 | M35 x 1.5 | 3.8901.002** | ● |
| Morse 3 | M35 x 1.5 | 3.8901.003** | ● | |
| Morse 5 | Morse 2 | M48 x 1.5 | 3.8901.004** | ● |
| Morse 3 | M48 x 1.5 | 3.8901.005** | ● | |
| Morse 4 | M48 x 1.5 | 3.8901.006** |

| Taper | L | G | Article number | Availability* |
|---|---|---|---|---|
| Morse 3 | 8 | M27 x 1.5 | 3.8948.001 | ● |
| Morse 4 | 8 | M35 x 1.5 | 3.8948.002 | ● |
| Morse 5 | 8 | M48 x 1.5 | 3.8948.003 |
The positioning driver allows to grind workpieces between centers. The workpiece is loaded to a precise position and is automatically driven – so it is not necessary to assemble a conventional driver.
We have been manufacturing centers designed to meet customer requirements for many years. Specify your work-holding and machining task and we will get back to you with our solutions, based on our specialized know-how and experience.


ตัวขับกำหนดตำแหน่งช่วยให้สามารถเจียรชิ้นงานระหว่างศูนย์กลางได้ ชิ้นงานจะถูกโหลดไปยังตำแหน่งที่แม่นยำและขับเคลื่อนโดยอัตโนมัติ – จึงไม่จำเป็นต้องประกอบตัวขับแบบเดิม
การเปลี่ยนชิ้นงานที่รวดเร็วมาก
ลดเวลาในการทำงาน
ชดเชยความแตกต่างของขนาดของรูศูนย์กลางชิ้นงาน
สามารถกลึงชิ้นงานได้ตลอดความยาว
(ใช้ไม่ได้กับตัวขับกำหนดตำแหน่งตัวเมีย)
กระบวนการเจียรที่ง่ายขึ้น
สามารถทำซ้ำกระบวนการได้
ใช้ได้กับเครื่องเจียรแบบธรรมดาและเครื่องเจียร CNC
ข้อได้เปรียบที่สำคัญในการผลิตแบบต่อเนื่องและจำนวนมากบนเครื่อง CNC และเครื่องจักรที่มีระบบโหลดอัตโนมัติ
ศูนย์กลางแบบกำหนดเอง
การผลิตตามแบบของลูกค้าและการออกแบบโซลูชันใหม่
เราผลิตศูนย์กลางที่ออกแบบมาเพื่อตอบสนองความต้องการของลูกค้ามานานหลายปีแล้ว ระบุงานจับยึดชิ้นงานและการกลึงของคุณ แล้วเราจะติดต่อกลับพร้อมกับโซลูชันของเรา โดยอิงจากความรู้และประสบการณ์เฉพาะทางของเรา