Evaluate bearing seats, length-to-diameter ratio, runout, concentricity, surface finish and heat-treatment effects in one process plan before production begins.
One accountable teamCNC-Turkey manages international sales, engineering communication, production coordination, quality documentation and export operations. Manufacturing is carried out through an established machining infrastructure in Istanbul, Türkiye.
Drawing-based manufacturing · Türkiye
Component families
Straight/stepped shafts, spindles, rollers and rings
Critical geometry
Bearing seats, concentricity, runout and straightness
Process route
Turning, milling, heat treatment, grinding and coating
Supply model
Prototype, replacement and repeat production
custom shaft and roller manufacturing
For shafts and rollers, achieving diameter alone is not enough. Functional surfaces must run on the intended axis, straightness must be maintained, post-heat-treatment finishing allowances must be planned and the same inspection logic must carry into repeat batches. The quotation review makes these risks visible from the drawing.
When geometry, service conditions and mating components are defined, a manufacturing route can be prepared for transmission shafts, stepped spindles, bearing shafts, guide or drive rollers and custom ring geometries. For larger or longer components, feasibility is confirmed from diameter, overall length, weight, workholding and finishing requirements.
✓Straight, stepped, hollow, flanged and shouldered shafts
✓Shafts with keyways, threads, holes or milled features
✓Guide, pressure, conveyor and drive rollers
✓Custom-profile rollers, wheels and ring components
Production route from drawing to final inspection
A typical route includes revision and manufacturability review, material sourcing, establishing datum surfaces, rough turning, milling/hole/keyway operations where required, heat treatment, straightening review, finish turning or cylindrical grinding, surface treatment and final inspection. The exact sequence is selected to reduce distortion and re-clamping risk.
Why runout, concentricity and straightness matter
Where several bearings, seals, couplings or working surfaces share an axis, checking each diameter independently may not be sufficient. Common datum, total runout, cylindricity, straightness and surface finish should be tied to function on the drawing. The inspection method and how the component is supported during measurement are agreed during quotation.
✓Bearing and seal seats checked against a common axis
✓Deflection, stress relief and straightening effects in slender parts
✓Ra/Rz and grinding direction for functional surfaces
Roller profile and working surface
Roller performance depends not only on outside diameter but also on profile position relative to the axis, surface hardness, roughness, coating allowance and the geometry that must be maintained across the working face. For crowned, grooved, radiused or custom contours, the profile-inspection method is defined with the drawing. Assembly and balance expectations for body, shaft or ring constructions are reviewed separately.
Material, heat treatment, grinding and coating
C45/C45E, 42CrMo4, 34CrNiMo6, 16MnCr5/20MnCr5 and suitable stainless grades can be reviewed against the drawing and service conditions. Dimensional change after quench and temper, case hardening, induction hardening or nitriding is considered together with finishing allowance and inspection plan. Hard chrome, black oxide or other suitable finishes can be coordinated within the manufacturing plan subject to specification.
Quality records and repeat production
For repeat orders, the approved drawing revision, material, heat-treatment/coating route, critical inspection points and packing method are retained as production references. EN 10204 3.1 material certificates, hardness or coating records and critical-dimension reports can be specified during quotation where required. Precision surfaces are protected against contact and corrosion risk in transit.
Information needed for an actionable quotation
Send a PDF drawing and, where available, STEP/STP with quantity, annual demand, material, preferred blank, critical datums and tolerances, runout/straightness requirement, surface finish, heat treatment, grinding/coating, balance expectation, documentation needs and destination country. Clear overall length, maximum diameter and approximate weight speed up capacity matching for long or large parts.
Real production archive
From shaft to roller: critical moments in production
These photographs show real shaft and roller manufacturing work and do not repeat imagery from earlier pages. Customer, dimension and project details remain confidential.
A single general limit would be misleading. Feasibility is matched from the drawing using maximum diameter, overall length, weight, geometry, material, workholding, tolerance and grinding requirements.
How is shaft straightness managed after heat treatment?
Rough-machining allowance, stress-relief/heat-treatment sequence, support, straightening where appropriate and finish-grinding plan are reviewed together. Acceptance criteria and inspection method should be defined on the drawing.
Can shafts include keyways, splines, threads or milled features?
Yes, but method and feasibility depend on geometry, tolerance, quantity and required equipment. Feature standard, datum relationships and inspection method should be clearly stated in the RFQ.
Can roller working surfaces be heat-treated or coated?
Subject to specification, hardening, nitriding, hard chrome and other suitable finishes can be coordinated. Target hardness, depth, coating thickness, masking, final dimensions and roughness are confirmed before quotation.
Which files and dimensions are needed for quotation?
Send a PDF drawing and, where available, STEP/STP with quantity, maximum diameter, overall length, approximate weight, material, critical datums/tolerances, runout-straightness, Ra/Rz, heat treatment, grinding/coating, balance and destination country.
RFQ
Send your drawing for a manufacturing review
Quantity, material, quality requirements and delivery country help us review the appropriate manufacturing and shipment route.
