GAETANO CAPORALI TCB.H.ERC Collets cuck ER16, ER20, ER25, ER32, ER40, ER50 with various DIN ISO 7388 shanks, with AD+B cooling
(Incl. Tax: €71.15)
ER16, ER20, ER25, ER32, ER40, ER50 collet chucks with ISO shank (ISO40 / ISO50) per DIN ISO 7388 (DIN 69871), designed for accurate tool clamping with ER collets on machining centers. The range covers multiple ER sizes and lengths, with G6.3 pre-balancing up to 15,000 rpm for better rotational stability and a more consistent surface finish.
Available on request with different nuts and balancing.

ER collet chucks with ISO shank (ISO40 / ISO50) per DIN ISO 7388 (DIN 69871) are intended for machining centers and chip-removal operations where repeatable clamping and stable rotation are essential. The ER system, compliant with DIN ISO 15488 (DIN 6499), clamps straight-shank tools via ER collets, making it suitable for milling, drilling and general machining.
Manufactured to high quality requirements: tapers in AT3 accuracy class, made from certified steel bar with heat treatments performed by certified suppliers, precision grinding inside and outside, and inspection with certified measuring instruments. G6.3 pre-balancing up to 15,000 rpm helps reduce vibration and improves stability.

Main dimensions – Key dimensions (Collet chuck / Collet / Nut)
| COLLET CHUCK | COLLET | D1 | D2 | MOUNTED NUT** | D7 | D8 | D9 | L1 | L6 | L7 | L13 | α |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ±0.05 | 6g | +0.5 / 0 | max. | max. | min. | min. | max. | |||||
| ERC16 | ERC16 | 1÷10 | 16 | Hexagonal G16SE | M22x1,5 | 10,5 | 28 | 27,5 | 13 | 22 | 10,6 | 8° |
| ERC20 | ERC20 | 1÷13(14*) | 20 | Hexagonal G20SE | M25x1,5 | 13,5 | 34 | 31,5 | 13,5 | 26,5 | 11,5 | 8° |
| ERC25 | ERC25 | 1÷16(20*) | 25 | Standard G25S | M32x1,5 | 18 | 42 | 34 | 14 | 29 | 12 | 8° |
| ERC32 | ERC32 | 2÷20(22*) | 32 | Standard G32S | M40x1,5 | 23,5 | 50 | 40 | 16 | 34 | 13 | 8° |
| ERC40 | ERC40 | 3÷26(30*) | 40 | Standard G40S | M50x1,5 | 30,5 | 63 | 46 | 17 | 38 | 15 | 8° |
| ERC50 | ERC50 | 6÷34 | 50 | Standard G50S | M64x2 | 38 | 78 | 60 | 24 | 58 | 21 | 8° |
** WD nut on woodworking toolholders
Quote principali – Dimensioni principali (Portapinza / Pinza / Ghiera)
| PORTAPINZA | PINZA | D1 | D2 | GHIERA MONTATA** | D7 | D8 | D9 | L1 | L6 | L7 | L13 | α |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ±0,05 | 6g | +0,5 / 0 | max. | max. | min. | min. | max. | |||||
| ERC16 | ERC16 | 1÷10 | 16 | Esagonale G16SE | M22x1,5 | 10,5 | 28 | 27,5 | 13 | 22 | 10,6 | 8° |
| ERC20 | ERC20 | 1÷13(14*) | 20 | Esagonale G20SE | M25x1,5 | 13,5 | 34 | 31,5 | 13,5 | 26,5 | 11,5 | 8° |
| ERC25 | ERC25 | 1÷16(20*) | 25 | Standard G25S | M32x1,5 | 18 | 42 | 34 | 14 | 29 | 12 | 8° |
| ERC32 | ERC32 | 2÷20(22*) | 32 | Standard G32S | M40x1,5 | 23,5 | 50 | 40 | 16 | 34 | 13 | 8° |
| ERC40 | ERC40 | 3÷26(30*) | 40 | Standard G40S | M50x1,5 | 30,5 | 63 | 46 | 17 | 38 | 15 | 8° |
| ERC50* | ERC50 | 6÷34 | 50 | Standard G50S | M64x2 | 38 | 78 | 60 | 24 | 58 | 21 | 8° |
** I mandrini per il legno montano le ghiere WD
- Brand:
- GAETANO CAPORALI
- Typology:
- ER with standard ring nut





