Drawing freeze
Name the 2D/3D revision and file format. Unfrozen CAD for a 0.500 in land produces quotes that cannot sit on one sheet later.
RFQ ALIGNMENT
Custom reamer quotes that share one technical and commercial scope
A custom reamer purchase for a hydraulic-block shop finishing 0.500 in bores collapses when one bidder prices a chucking reamer in a rigid collet, another prices a floating-holder setup, and a third skips the cylindricity after ream report. This desk writes those missing lines so factories answer the same revision, quantity, and destination.
See inquiry families
Six checks every custom reamer bidder should answer
Floating holder or rigid chuck on this bore?
State chucking reamer versus floating holder, plus bushing or collet standard. Mixing the two setups on one custom reamer RFQ hides runout and cylindricity risk.
GD&T datums
Call out the 0.500 in functional land, runout, and cylindricity after ream. Tight-tolerance cost rises when every chamfer is treated as ±0.005 mm.
Surface and coating
Ra 0.4 μm versus Ra 1.6 μm, PVD/DLC, or edge hone change both price and CMM time. Ask whether coating sits inside piece price or on an NRE line.
Quantity ladder
Separate prototype pieces, first production lot, and EAU. MOQ and NRE should sit on their own lines, not inside a blended dozen.
Documents
Request CoC, material certificate, FAI, or CMM format for cylindricity. ISO 9001 remains a factory document until a copy is returned.
What belongs on the quote versus what stays an open item
The table is a buyer checklist for a custom reamer used on hydraulic 0.500 in lands. It does not publish this desk’s own factory prices or a saving percentage.
| Topic | Must appear on each quote | Leave open until evidence returns |
|---|---|---|
| Geometry | 0.500 in finished diameter, flute count, shank, holder type | Unstated grind stock or rework allowance after float |
| Material | Carbide grade, HSS, or PCD system | Substitute grade without written approval |
| Inspection | Cylindricity after ream, FAI or lot plan, report format | Cpk or DPPM claims without data |
| Commercial | Currency, quantity, validity, Incoterm | Lead time that is not tied to blank availability |
| Logistics | Hydraulic-block plant destination, packing, freight basis | Duty and brokerage if DDP was not requested |
Buyer worksheets you can request with the RFQ
- Comparable RFQ field listChecklist
- Inspection and certificate prompt sheetChecklist
- Landed-cost split worksheetWorksheet
These are prompts, not downloadable factory catalogs. No file is issued as proof of capacity.
Send the custom reamer package on one form
List exclusions you already know: coating, floating-holder bushing, special packaging, or on-machine tryout at the hydraulic-block cell. Factories can then price the same remainder.
- Keep prototype grind lots and production coating lots on separate quantity lines.
- State destination and preferred Incoterm before freight lines are read together.
- Optional budget and supplier preference merge into the existing requirement field.