Hand Drilling, Countersinking & Spotfacing

RB256 & RB(I) 256 Microstop Cage

Stroke 7.5mm | 0.30in

Cutter Thread RB 256 M6 x 1 | RB(I) 256 1/4”-28

Comparison of various core drilling tools with large and small window configurations, including tapped and threaded options with mounting bases and vacuum features.
  • Different mounting bases available.
  • For special composites mounting base with vacuum.
  • Cemented, hardened and ground chrome-nickel steel spindle mounted on a self lubrificating bronze body and a thrust bearing.
  • Centring-cone of the cutter (120°) for perfect concentricity.
  • Microstop depth adjustment (1 scale division = .001”).
  • Microstop depth setting is held securely in place by locknut with seal. This patented feature allows an easy loosening of the lock-nut without damage to the drill cage.
MODEL INPUT STYLE SHANK CUTTER THREAD STROKE VACUUM MOUNTING
BASE STYLE		 WINDOW
SIZE		 NOSE INSERT
STYLE		 DIAMETER
MAX		 OVERALL
LENGTH		 WEIGHT
IN MM MM MM MAX
MM		 MIN
MM		 G
10010110W FIXED SHANK 0.236 6.0 1/4"-28 7.5 NO M19F LARGE HARD CHROME 28 98 91 175
10010110 FIXED SHANK 0.236 6.0 1/4"-28 7.5 NO M19F SMALL HARD CHROME 28 98 91 175
10010111W FIXED SHANK 0.236 6.0 1/4"-28 7.5 YES M19F LARGE HARD CHROME 28 98 91 175
10010111 FIXED SHANK 0.236 6.0 1/4"-28 7.5 YES M19F SMALL HARD CHROME 28 98 91 175
10010115W FIXED SHANK 0.236 6.0 1/4"-28 7.5 NO M19F LARGE NYLON 28 98 91 175
10010115 FIXED SHANK 0.236 6.0 1/4"-28 7.5 NO M19F SMALL NYLON 28 98 91 175
10010116W FIXED SHANK 0.236 6.0 1/4"-28 7.5 YES M19F LARGE NYLON 28 98 91 175
10010116 FIXED SHANK 0.236 6.0 1/4"-28 7.5 YES M19F SMALL NYLON 28 98 91 175
10010010W FIXED SHANK 0.236 6.0 M6 X 1 7.5 NO M19F LARGE HARD CHROME 28 98 91 175
10010010 FIXED SHANK 0.236 6.0 M6 X 1 7.5 NO M19F SMALL HARD CHROME 28 98 91 175
10010001W FIXED SHANK 0.236 6.0 M6 X 1 7.5 YES M19F LARGE HARD CHROME 28 98 91 175
10010001 FIXED SHANK 0.236 6.0 M6 X 1 7.5 YES M19F SMALL HARD CHROME 28 98 91 175
10010015W FIXED SHANK 0.236 6.0 M6 X 1 7.5 NO M19F LARGE NYLON 28 98 91 175
10010015 FIXED SHANK 0.236 6.0 M6 X 1 7.5 NO M19F SMALL NYLON 28 98 91 175
10010016W FIXED SHANK 0.236 6.0 M6 X 1 7.5 YES M19F LARGE NYLON 28 98 91 175
10010016 FIXED SHANK 0.236 6.0 M6 X 1 7.5 YES M19F SMALL NYLON 28 98 91 175
10010205W FIXED SHANK 0.236 6.0 M6 X 1 7.5 YES M30 X 1M LARGE NYLON 28 98 91 175
10010205 FIXED SHANK 0.236 6.0 M6 X 1 7.5 YES M30 X 1M SMALL NYLON 28 98 91 175
* High Resolution cages with 0.0001" are available.

Microstop Cage Parts

REFERENCE INDEX QTY DESCRIPTION
90505020 1 1 BODY
90025025 2 1 RB 256 SPINDLE
90025095 2 1 RBI 256 SPINDLE
90205280 3 1 BRONZE BUSHING
93430045 4 1 SPRING
90280015 5 1 THRUST BEARING
90245130 6 20 BALL 2.5 MM DIA
90280020 7 1 THRUST BEARING
90013029 8 1 CIRCLIPS
90495015 9 1 LOCK NUT
93430015 10 1 SPRING
94215015 11 1 VERNIER
90815060W 12 1 TAPPED MOUNTING BASE LARGE WINDOW
90815060 12B 1 TAPPED MOUNTING BASE
90825015 13 1 HARD CHROME STEEL NOSE
90825020 14 1 NYLON NOSE PIECE
90815063W 15 1 TAPPED MOUNTING BASE LARGE WINDOW WITH VACUUM
90815063 15B 1 TAPPED MOUNTING BASE WITH VACUUM
90815098W 16 1 THREADED MOUNTING BASE LARGE WINDOW WITH VACUUM
90815098 16B 1 THREADED MOUNTING BASE WITH VACUUM
90825085 17 1 NOSE PIECE
Technical engineering drawing of a mechanical component with detailed measurements, sections, and labels, including a large window feature.
Detailed technical schematic of a mechanical assembly with multiple cross-sectional views and labeled components, including dimensions and specifications.

Technical Data

Shank: Ø 6mm | 0.236in dia Weight: 165 - 175 g
Cutter thread: RB 256 M6 X 1 | RB 256I 1/4"-28" Overall length maxi: 98mm | 3.85in
Stroke: 7.5mm | 0.3in Overall length mini: 91mm | 3.25in
Ext. Maxi: Ø 28mm | 1.1in dia