From prototype to repeat production, manage CNC turning, bore and groove operations, heat treatment, grinding, coating and quality documentation within one manufacturing route.
One accountable teamCNC-Turkey manages international sales, engineering communication, production coordination, quality documentation and export operations. Manufacturing is carried out at partner workshops in Istanbul selected for their specialism; CNC-Turkey is responsible for quotation, quality and delivery.
Drawing-based manufacturing · Türkiye
Component types
Pins, locating pins, bushings and custom geometries
Manufacturing
Turning, bores, grooves and suitable milling operations
Complementary processes
Heat treatment, grinding and coating coordination
Order structure
Prototype, low volume and repeat series
pin and bushing manufacturing
Pins and bushings are often critical mating components. Material selection, hardness depth, grinding allowance, lubrication details and the final inspection plan are reviewed together from the drawing before quotation.
A ground tapered pin works with slotted sleeves having a straight outside diameter and tapered bore. Tightening the end bolt and washer drives each sleeve up the taper so it expands into the worn lug bore, allowing installation without line boring or welding in many cases. Expansion range depends on sleeve design and is defined on the drawing. We make expanding pivot pins in Ø30–500 mm diameters and lengths up to 4 m from 42CrMo4 or 34CrNiMo6, quenched and tempered or induction hardened, and 8620 or 20NiCrMo2-2 with case hardening. Grinding is performed within our partner workshop network; hard chrome is optional. Reference work: long pivot pins up to 4 m for underground mining loaders, produced to drawing.
When geometry and service conditions are defined on the drawing, a manufacturing route can be prepared for non-standard pins and bushings, matched component sets and custom connection geometries.
✓Cylindrical, stepped, shouldered, headed or threaded pins
✓Locating, hinge, pivot and equipment connection pins
✓Cylindrical, flanged, stepped and lubrication-groove bushings
✓Custom parts with cross holes, grooves, flats and locking features
Manufacturing route from drawing to final inspection
A typical route includes technical review, material sourcing, rough turning and bore operations, heat treatment where required, finish machining or grinding, surface treatment and final inspection. The exact sequence is determined from component geometry and specification.
Material and heat-treatment selection
Steels such as C45/C45E, 42CrMo4, 34CrNiMo6, 20MnCr5 and 17CrNiMo6, together with suitable stainless and tool steels, can be reviewed against the drawing. Selection is confirmed from load, impact, wear, corrosion, weldability and target hardness.
✓Quench and temper, case hardening, induction hardening and nitriding
✓Requirements up to approximately 65 HRC are subject to drawing and process review
✓Hardness depth, core properties and test method should be defined in the specification
Fits, tolerances and surface finish
For a pin-bushing pair, clearance or interference, operating temperature, lubrication and load conditions should be considered together. H7, h6 or other fit classes are applied only when specified on the drawing; feasibility depends on diameter, length, material, heat treatment and inspection method.
✓Critical diameters, concentricity, runout and perpendicularity
✓Ra/Rz surface requirements and grinding direction
✓Lubrication grooves, grease holes, chamfers and edge conditions
✓Effect of coating or grinding allowance on dimensions
Grinding, coating and finishing
Post-heat-treatment dimensional change and coating thickness can affect critical fits. Cylindrical or internal grinding, hard chrome, zinc plating, black oxide and other suitable finishes can be coordinated within the manufacturing plan when masking areas and final inspection methods are defined.
Typical applications
Custom pins and bushings are used in heavy-equipment joints, hydraulic systems, agricultural machinery, industrial automation and general machinery to guide motion, carry load, align components or provide a replaceable wear surface.
Inspection and documentation
Inspection scope is agreed before the order. For suitable projects, an EN 10204 3.1 material certificate, dimensional report, hardness or heat-treatment record and coating certificate can be included in the agreed documentation package.
Representative component examples
Pin and bushing machining examples
The images represent pin-and-bushing families and machining processes to protect customer confidentiality; new-project suitability is confirmed from the drawing.
Yes. Ground tapered pins and slotted sleeves with a straight OD and tapered bore can be made to the customer’s drawing in Ø30–500 mm diameters and lengths up to 4 m. Expansion range depends on sleeve design and is defined on the drawing.
Can you make pins for mining loaders up to 4 m long?
Yes, subject to drawing review, pins can be made in Ø30–500 mm diameters and lengths up to 4 m. Turning capacity is Ø700 × 4000 mm; grinding is performed within our partner workshop network.
Which files are needed for a pin and bushing quotation?
Send a PDF drawing and, where available, STEP/STP together with quantity, material, critical fits, hardness, surface requirements and destination country.
Can hardened and ground pins or bushings be supplied?
Yes. Subject to drawing and process review, heat treatment, hard machining and grinding can be coordinated within the manufacturing plan. Target hardness, hardness depth and final dimensional requirements are confirmed before quotation.
Are prototype and repeat-production orders supported?
Suitability is reviewed from the drawing, quantity and available capacity. When moving from prototype to low volume and repeat series, the drawing revision and inspection plan are maintained.
Can material and heat-treatment certificates be supplied?
EN 10204 3.1 material certificates and agreed heat-treatment, hardness or coating records can be supplied when requested and confirmed at the quotation stage.
RFQ
Send your drawing for a manufacturing review
Quantity, material, quality requirements and delivery country help us review the appropriate manufacturing and shipment route.
