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Precision Collets for Bosch 1618 Routers

  • Steel : SCM440
  • H.R.C. 45-52
  • Surface Roughness: Ra 0.5um
  • Internal hole by boring machine.
  • Collet Tolerance Grades:(read the Collet Selection tutorial)
    • EP (extreme-precision grade) TIR < 0.0001in (0.0025mm), TIR @ 1.0in. < 0.0002in.
    • UP (ultra-precision grade) TIR < 0.0002in (0.005mm)
    • PG (precision grade) TIR < 0.0004in (0.01mm)
    • SG (standard grade) TIR < 0.0006in (0.015mm)
  • Degree of concentricity exceeds the DIN standard. 100% inspected
  • Must be used with Think & Tinker BOPG-1618 nuts and spanners
Bosch 1618 collet
Nut-Collet Crossection

Based on the ER Spring-Collet / Nut architecture, the Think & Tinker family of precision collets and nuts was designed to bring the precision  and flexibility of expensive high frequency spindles to low-cost, consumer and professional grade routers.

The snap-together design and eccentric extraction ring prevents collets from sticking or binding in the tapered spindle bore. Tool removal is consistently easy.

The internal bore of each collet is preloaded to lightly grip the shank of a bit when it is inserted, preventing tools from falling out or shifting while the nut is being tightened.  Please read Working with ER Nuts and Collets.

NOTE: These collets MUST be used with Think & Tinker NUTs and WRENCHES! They will NOT work with the nuts and wrenches that are supplied with your router.

DescriptionReviews Part Number Price
1/8 in. (0.125 in) clamping, precision grade (PG) collet (Bosch 1618, TIR < 0.0004in) BOPG-1618-1250

$19.95

3/16 in. (0.1875 in) clamping, precision grade (PG) collet (Bosch 1618, TIR < 0.0004in) BOPG-1618-1875

$21.95

1/4 in. (0.250 in) clamping, precision grade (PG) collet (Bosch 1618, TIR < 0.0004in) BOPG-1618-2500

$19.95

3/8 in. (0.375 in) clamping precision-grade (PG) collet (Bosch 1618, TIR < 0.0004in) BOPG-1618-3750

$19.95

1/2 in. (0.500 in) clamping, precision prade (PG) collet (Bosch 1618, TIR < 0.0004in) BOPG-1618-5000

$19.95