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CNC Machined Forged Flange Dual Stepped Shaft in Alloy Steel for Heavy-Duty Applications

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CNC Machined Forged Flange Dual Stepped Shaft in Alloy Steel for Heavy-Duty Applications

MOQ:	1000 τεμ
Τιμή:	$0.5-2
Τυπική συσκευασία:	ξύλινη θήκη
Περίοδος παράδοσης:	30 ημέρες
Μέθοδος πληρωμής:	D/A,D/P,T/T
Ικανότητα εφοδιασμού:	10000 τεμ/μήνα

Πληροφορίες Πληροφορίες

Περιγραφή προϊόντων

Πληροφορίες λεπτομέρειας

Τόπος καταγωγής

Qingdao, Κίνα

Μάρκα

Qingdao Sande Tech Co.,Ltd

Πιστοποίηση

ISO, DIN, AISI, ASTM, BS, JIS, etc.

Αριθμό μοντέλου

OEM

Μορφή DRW:

PDF/DWG/IGS/STP/ Κλπ

Βαθμός:

4.8

Αίτημα συσκευασίας:

ΞΥΛΙΝΟ ΚΟΥΤΙ

παραγωγική διαδικασία:

Cnc μηχανική κατεργασία

Εφαρμογή:

μεταλλικά μέρη μηχανημάτων

Μέθοδος Παραγωγής:

Cnc μηχανική κατεργασία

Περιγραφή προϊόντων

Forged Flange Dual Stepped Shaft | CNC Machining Precision Spindle

Product Overview

The Forged Flange Dual Stepped Shaft is a high-precision CNC machined spindle component designed for heavy-duty rotating and power transmission applications. Manufactured from forged alloy steel, the integrated flange and dual-step geometry provide exceptional load distribution, torsional rigidity, and alignment accuracy. Precision CNC turning, milling, and grinding operations ensure tight tolerances and superior surface finishes, making this spindle ideal for demanding industrial environments.

Key Features

Integral Forged Flange - Provides superior strength and eliminates weld-induced stress concentrations; ensures reliable torque transmission and axial positioning
Dual Stepped Geometry - Accommodates multiple bearing assemblies, seals, or gear mounts on distinct diameters; optimizes load path and simplifies assembly
Closed-Die Forged Blank - Refined grain structure and uninterrupted flow lines enhance fatigue resistance, impact toughness, and directional strength
Precision CNC Machining - Multi-axis turning, milling, and grinding achieve tight dimensional tolerances (down to ±0.005 mm / ±0.0002") on critical diameters, flange faces, and keyways
Heat Treatment Options - Quenching, tempering, normalizing, or induction hardening to achieve specific hardness (28-42 HRC) and mechanical properties
100% Quality Verification - Dimensional inspection, surface roughness testing (Ra ≤1.6 μm), and optional NDT (ultrasonic or magnetic particle) as required

Technical Specifications

Parameter	Value / Range
Material	Alloy steel (42CrMo4, 4140, 4340, 40Cr, 35CrMo, or custom)
Forging Process	Closed-die / open-die forging
Shaft Diameter Range	50 mm - 500 mm (2" - 20")
Overall Length Range	200 mm - 3000 mm (8" - 120")
Flange Diameter Range	Up to 800 mm (31.5")
Tolerance (critical diameters)	ISO IT6 - IT7 (±0.005 mm - 0.015 mm)
Concentricity (flange to shaft)	≤0.02 mm
Surface Finish	Ra 0.8 - 1.6 μm (ground), Ra 1.6 - 3.2 μm (turned)
Heat Treatment	Quenched + tempered (HB 240-300 or custom)
Hardness	25-42 HRC (depending on material & application)
Non-Destructive Testing	UT (ISO 10893-8), MT (ASTM E709) - optional

Applications

Industrial Gearboxes - Main input/output spindles with flange coupling
Wind Turbine Drivetrains - High-torque low-speed shafts with integral mounting flange
Heavy-Duty Pumps & Compressors - Rotor or crankshaft spindles requiring stepped bearing seats
Metal Forming Presses - Eccentric or main drive shafts
Mining & Material Handling - Conveyor drive spindles and pulley shafts
Marine Propulsion - Flanged intermediate shafts

Manufacturing Process Flow

Material Selection - Certified alloy steel billets with mill test reports (EN 10204 3.1)
Hot Forging - Closed-die forging to near-net shape; grain flow optimization
Rough CNC Turning - Removal of scale and initial profiling
Heat Treatment - Quenching & tempering for mechanical property enhancement
Finish CNC Machining - Precision turning of diameters, flange faces, and steps
Milling / Drilling - Keyways, threaded holes, or locating pin holes on flange
Grinding (optional) - Cylindrical grinding of bearing journals
Surface Treatment - Anti-rust oil, phosphate coating, or black oxide
Inspection & Marking - CMM, hardness test, and permanent part marking

Quality Assurance

ISO 9001:2015 certified machining facility
In-process inspection with digital calipers, micrometers, and bore gauges
Final inspection report including dimensional chart and material certificate
Traceability from forging heat number to finished part

Ordering & Customization

We accept custom designs based on customer drawings (CAD, PDF, or sample part). The following information is required for quotation:

Material grade & heat treatment requirements
Dimensional drawing with tolerances
Flange hole pattern (if any)
Quantity (prototype, small batch, or mass production)
Any special testing or surface finishing requirements

Product Benefits

Benefit	Description
Reliability	Forged structure eliminates hidden cracks or voids
Precision	CNC machining ensures interchangeability and smooth assembly
Strength	Heat-treated alloy steel withstands shock loads and high torque
Versatility	Single-piece design replaces welded or multi-component assemblies
Cost Efficiency	Near-net forging reduces machining time and material waste

Frequently Asked Questions

General & Product Definition

Q1: What is a forged flange dual stepped shaft?

A: It is a one-piece forged component combining an integral mounting flange with a shaft that has two or more distinct diameters (steps). The forging process aligns the metal grain structure, delivering superior strength compared to welded or fully machined-from-bar alternatives.

Q2: What is the difference between a "dual stepped shaft" and a standard stepped shaft?

A: A dual stepped shaft typically features two precision-ground diameters designed for bearing fits, seal surfaces, or gear mounting. The integral flange provides a rigid mounting interface, eliminating the need for separate coupling hubs.

Q3: Why choose a forged flange shaft instead of a welded assembly?

A: Forging eliminates weld seams, which are potential failure points under cyclic fatigue or impact loads. A forged flange shaft offers higher torsional strength, better concentricity, and longer service life in heavy-duty applications.

Materials & Heat Treatment

Q4: What materials are available?

A: Common materials include:

Alloy steels: 42CrMo4 (AISI 4140), 34CrNiMo6 (AISI 4340), 40Cr (AISI 5140), 35CrMo (AISI 4135)
Carbon steels: C45 (AISI 1045), S355J2
Stainless steels (on request): 17-4PH, 304, 316
Customer-specified grades also available

Q5: What heat treatment options do you offer?

Quenching + Tempering - For high strength and toughness (typical hardness: 28-36 HRC)
Normalizing - For stress relief and uniform grain structure
Induction Hardening - For localized surface hardness (up to 55 HRC) on bearing journals
Annealing - For maximum machinability (if customer will perform final heat treatment)

Q6: Can you provide material test reports?

A: Yes. We provide EN 10204 Type 3.1 mill test certificates (MTC) for all forged blanks. Third-party inspection (e.g., SGS, BV) is available upon request.

Manufacturing & Precision

Q7: What tolerances can you achieve?

Critical diameters (bearing seats): ISO IT6 (±0.005 mm / 0.0002")
Non-critical diameters: ISO IT8-IT9
Concentricity (flange OD to shaft axis): ≤0.02 mm
Flange face perpendicularity: ≤0.02 mm

Q8: What surface finishes are possible?

Turned only: Ra 1.6 - 3.2 μm
Ground: Ra 0.4 - 0.8 μm (for bearing journals)
Polished (upon request): Ra ≤0.2 μm

Q9: Can you machine keyways, threaded holes, or splines?

A: Yes. We have CNC milling and hobbing capabilities for:

Keyways (per DIN 6885, ANSI B17.1)
Threaded blind/through holes
Involute splines (DIN 5480, ANSI B92.1)
Flange bolt hole patterns (PCD drilling)

Q10: Do you supply the forging blank or only finish machining?

A: Both options are available:

Option A (Full service): We source forged blanks from our approved forging partners and perform complete CNC finishing
Option B (Customer-supplied): You provide the rough forged blank, and we perform precision machining only

Applications & Suitability

Q14: What industries use this type of shaft?

Industrial gearboxes (main input/output spindles)
Wind turbine drivetrains
Heavy-duty pumps and compressors
Metal forming presses
Mining and material handling equipment
Marine propulsion systems
Hydraulic power units

Q15: Can this shaft be used for high-speed applications (e.g., >10,000 RPM)?

A: Yes, but balancing is required. We can provide dynamic balancing (G2.5, G1.0 per ISO 1940) for high-speed spindles. Please specify your RPM and balancing grade requirement.

Q16: Is this suitable for corrosive environments (offshore, chemical plants)?

A: With appropriate material selection (e.g., stainless steel or high-alloy steel + anti-corrosion coating) and surface treatment (zinc plating, electroless nickel, or epoxy coating), yes. Please advise your operating environment.

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Τμήματα σφυρηλατηρίου ψευδαργύρου Zamak

CNC Machined Forged Flange Dual Stepped Shaft in Alloy Steel for Heavy-Duty Applications

MOQ:	1000 τεμ
Τιμή:	$0.5-2
Τυπική συσκευασία:	ξύλινη θήκη
Περίοδος παράδοσης:	30 ημέρες
Μέθοδος πληρωμής:	D/A,D/P,T/T
Ικανότητα εφοδιασμού:	10000 τεμ/μήνα

Πληροφορίες λεπτομέρειας

Περιγραφή προϊόντων

Πληροφορίες λεπτομέρειας

Τόπος καταγωγής

Qingdao, Κίνα

Μάρκα

Qingdao Sande Tech Co.,Ltd

Πιστοποίηση

ISO, DIN, AISI, ASTM, BS, JIS, etc.

Αριθμό μοντέλου

OEM

Μορφή DRW:

PDF/DWG/IGS/STP/ Κλπ

Βαθμός:

4.8

Αίτημα συσκευασίας:

ΞΥΛΙΝΟ ΚΟΥΤΙ

παραγωγική διαδικασία:

Cnc μηχανική κατεργασία

Εφαρμογή:

μεταλλικά μέρη μηχανημάτων

Μέθοδος Παραγωγής:

Cnc μηχανική κατεργασία

Ποσότητα παραγγελίας min:

1000 τεμ

Τιμή:

$0.5-2

Συσκευασία λεπτομέρειες:

ξύλινη θήκη

Χρόνος παράδοσης:

30 ημέρες

Όροι πληρωμής:

D/A,D/P,T/T

Δυνατότητα προσφοράς:

10000 τεμ/μήνα

Περιγραφή προϊόντων

Forged Flange Dual Stepped Shaft | CNC Machining Precision Spindle

Product Overview

Key Features

Integral Forged Flange - Provides superior strength and eliminates weld-induced stress concentrations; ensures reliable torque transmission and axial positioning
Dual Stepped Geometry - Accommodates multiple bearing assemblies, seals, or gear mounts on distinct diameters; optimizes load path and simplifies assembly
Closed-Die Forged Blank - Refined grain structure and uninterrupted flow lines enhance fatigue resistance, impact toughness, and directional strength
Precision CNC Machining - Multi-axis turning, milling, and grinding achieve tight dimensional tolerances (down to ±0.005 mm / ±0.0002") on critical diameters, flange faces, and keyways
Heat Treatment Options - Quenching, tempering, normalizing, or induction hardening to achieve specific hardness (28-42 HRC) and mechanical properties
100% Quality Verification - Dimensional inspection, surface roughness testing (Ra ≤1.6 μm), and optional NDT (ultrasonic or magnetic particle) as required

Technical Specifications

Parameter	Value / Range
Material	Alloy steel (42CrMo4, 4140, 4340, 40Cr, 35CrMo, or custom)
Forging Process	Closed-die / open-die forging
Shaft Diameter Range	50 mm - 500 mm (2" - 20")
Overall Length Range	200 mm - 3000 mm (8" - 120")
Flange Diameter Range	Up to 800 mm (31.5")
Tolerance (critical diameters)	ISO IT6 - IT7 (±0.005 mm - 0.015 mm)
Concentricity (flange to shaft)	≤0.02 mm
Surface Finish	Ra 0.8 - 1.6 μm (ground), Ra 1.6 - 3.2 μm (turned)
Heat Treatment	Quenched + tempered (HB 240-300 or custom)
Hardness	25-42 HRC (depending on material & application)
Non-Destructive Testing	UT (ISO 10893-8), MT (ASTM E709) - optional

Applications

Industrial Gearboxes - Main input/output spindles with flange coupling
Wind Turbine Drivetrains - High-torque low-speed shafts with integral mounting flange
Heavy-Duty Pumps & Compressors - Rotor or crankshaft spindles requiring stepped bearing seats
Metal Forming Presses - Eccentric or main drive shafts
Mining & Material Handling - Conveyor drive spindles and pulley shafts
Marine Propulsion - Flanged intermediate shafts

Manufacturing Process Flow

Material Selection - Certified alloy steel billets with mill test reports (EN 10204 3.1)
Hot Forging - Closed-die forging to near-net shape; grain flow optimization
Rough CNC Turning - Removal of scale and initial profiling
Heat Treatment - Quenching & tempering for mechanical property enhancement
Finish CNC Machining - Precision turning of diameters, flange faces, and steps
Milling / Drilling - Keyways, threaded holes, or locating pin holes on flange
Grinding (optional) - Cylindrical grinding of bearing journals
Surface Treatment - Anti-rust oil, phosphate coating, or black oxide
Inspection & Marking - CMM, hardness test, and permanent part marking

Quality Assurance

ISO 9001:2015 certified machining facility
In-process inspection with digital calipers, micrometers, and bore gauges
Final inspection report including dimensional chart and material certificate
Traceability from forging heat number to finished part

Ordering & Customization

We accept custom designs based on customer drawings (CAD, PDF, or sample part). The following information is required for quotation:

Material grade & heat treatment requirements
Dimensional drawing with tolerances
Flange hole pattern (if any)
Quantity (prototype, small batch, or mass production)
Any special testing or surface finishing requirements

Product Benefits

Benefit	Description
Reliability	Forged structure eliminates hidden cracks or voids
Precision	CNC machining ensures interchangeability and smooth assembly
Strength	Heat-treated alloy steel withstands shock loads and high torque
Versatility	Single-piece design replaces welded or multi-component assemblies
Cost Efficiency	Near-net forging reduces machining time and material waste

Frequently Asked Questions

General & Product Definition

Q1: What is a forged flange dual stepped shaft?

Q2: What is the difference between a "dual stepped shaft" and a standard stepped shaft?

Q3: Why choose a forged flange shaft instead of a welded assembly?

Materials & Heat Treatment

Q4: What materials are available?

A: Common materials include:

Alloy steels: 42CrMo4 (AISI 4140), 34CrNiMo6 (AISI 4340), 40Cr (AISI 5140), 35CrMo (AISI 4135)
Carbon steels: C45 (AISI 1045), S355J2
Stainless steels (on request): 17-4PH, 304, 316
Customer-specified grades also available

Q5: What heat treatment options do you offer?

Quenching + Tempering - For high strength and toughness (typical hardness: 28-36 HRC)
Normalizing - For stress relief and uniform grain structure
Induction Hardening - For localized surface hardness (up to 55 HRC) on bearing journals
Annealing - For maximum machinability (if customer will perform final heat treatment)

Q6: Can you provide material test reports?

A: Yes. We provide EN 10204 Type 3.1 mill test certificates (MTC) for all forged blanks. Third-party inspection (e.g., SGS, BV) is available upon request.

Manufacturing & Precision

Q7: What tolerances can you achieve?

Critical diameters (bearing seats): ISO IT6 (±0.005 mm / 0.0002")
Non-critical diameters: ISO IT8-IT9
Concentricity (flange OD to shaft axis): ≤0.02 mm
Flange face perpendicularity: ≤0.02 mm

Q8: What surface finishes are possible?

Turned only: Ra 1.6 - 3.2 μm
Ground: Ra 0.4 - 0.8 μm (for bearing journals)
Polished (upon request): Ra ≤0.2 μm

Q9: Can you machine keyways, threaded holes, or splines?

A: Yes. We have CNC milling and hobbing capabilities for:

Keyways (per DIN 6885, ANSI B17.1)
Threaded blind/through holes
Involute splines (DIN 5480, ANSI B92.1)
Flange bolt hole patterns (PCD drilling)

Q10: Do you supply the forging blank or only finish machining?

A: Both options are available:

Option A (Full service): We source forged blanks from our approved forging partners and perform complete CNC finishing
Option B (Customer-supplied): You provide the rough forged blank, and we perform precision machining only

Applications & Suitability

Q14: What industries use this type of shaft?

Industrial gearboxes (main input/output spindles)
Wind turbine drivetrains
Heavy-duty pumps and compressors
Metal forming presses
Mining and material handling equipment
Marine propulsion systems
Hydraulic power units

Q15: Can this shaft be used for high-speed applications (e.g., >10,000 RPM)?

A: Yes, but balancing is required. We can provide dynamic balancing (G2.5, G1.0 per ISO 1940) for high-speed spindles. Please specify your RPM and balancing grade requirement.

Q16: Is this suitable for corrosive environments (offshore, chemical plants)?

Ετικέτες: