SUMMIT ADJUSTABLE HAND REAMER

The Summit Adjustable Hand Reamer is a precision cutting tool used for enlarging, finishing, and sizing pre-drilled holes with high accuracy. It features an expandable blade design, allowing the tool to cover a small range of diameters, making it highly versatile for workshop use.
SIZE RANGE (INCH) RANGE (MM) CS PART NO HSS PART NO
H-V 1/4 – 9/32 6.35 – 7.14 CRHV SRHV
H-W 9/32 – 5/16 7.14 – 7.93 CRHW SRHW
HWZ  5/16 – 11/32 7.93 -8.74 CRHWZ SRHWZ
H-Y 11/32 – 3/8 8.74 -9.52 CRHY SRHY
H-1 3/8 – 13/32 9.52 -10.31 CARH1 SARH1
H-2 13/32 – 7/16 10.31 -11.10 CARH2 SARH2
H-3 7/16 – 15/32 11.10 -11.90 CARH3 SARH3
H-4 15/32 – 17/32 11.90 -13.49 CARH4 SARH4
H-5 17/32 – 19/32 13.49 -15.08 CARH5 SARH5
H-6 19/32 – 21/32 15.08 -16.66 CARH6 SARH6
H-7 21/32 – 23/32 16.66 -18.25 CARH7 SARH7
H-8 23/32 – 25/32 18.25 -19.84 CARH8 SARH8
H-9 25/32 – 27/32 19.84 -21.43 CARH9 SARH9
H-10 27/32 – 15/16 21.43 – 23.81 CARH10 SARH10
H-11 15/16 – 1 1/16 23.81 -26.98 CARH11 SARH11
H-12 1 1/16 – 1 3/16 26.98 -30.16 CARH12 SARH12
H-13 1 3/16 – 1 1/32 30.16 -34.13 CARH13 SARH13
H-14 1 1/32 – 1 1/2 34.13 -38.10 CARH14 SARH14
H-15 1 1/2 – 1 13/16 38.10 -46.03 CARH15 SARH15
H-16 1 13/16 – 2 7/32 46.03 -56.35 CARH16 SARH16
H-17 2 7/32 – 2 3/4 56.35 – 69.85 CARH17 SARH17
H-18 2 3/4 – 3 11/32 69.85 – 84.93 CARH18 SARH18

The size adjustment is done by loosening one nut and tightening the other, which moves the blades along tapered slots to achieve the required diameter. This design makes it ideal for repair work and non-standard hole sizes.

Manufactured from high-speed steel (HSS) and hardened for durability, the reamer ensures long life, precise cutting, and smooth surface finish.

Where to Use

  • Engineering Workshops: Finishing drilled holes
  • Automotive Repair: Bushes, bearings, and alignment work
  • Tool Rooms: Precision hole sizing
  • Maintenance Work: Repairing worn or oversized holes
  • Manufacturing Units: Small batch and custom jobs

Key Features

  • Adjustable diameter range → replaces multiple fixed reamers
  • Made from HSS (60–64 HRC) for durability
  • Expandable blades for precise sizing
  • Easy adjustment with double nut mechanism
  • Produces smooth and accurate hole finish
  • Suitable for steel and non-ferrous materials

Applications

Used for precision finishing and enlarging of holes, ensuring correct size, alignment, and smooth surface finish in machining and repair work.