BAR STOCK / PREPARED MATERIAL
Hydraulic rod
materials.
Steel bar and prepared material for hydraulic cylinder and piston rods. Agree the grade, heat treatment, surface finish and inspection for the supplied stage.
Enquire about supply
SUPPLY AT A GLANCE
CK45 / 1045 · 42CrMo4 / 4140
40Cr is an alternative. Grade labels from different standards are not automatically interchangeable.
- Bar stock
- Agree grade, condition and stock dimensions. Identify the machining and finishing still to be done, with material records and heat traceability.
- Prepared rod material
- Specify the agreed heat treatment and peeled, turned or ground stage. State the incoming, pre-finish and final diameters separately, with straightness and surface checks for the supplied stage.
- Order-defined chrome-plated supply
- Where chrome plating is included in the agreed order, confirm the final dimensions, finish and inspection records. A base-material MTC does not certify the final plated surface.
Supply covers rod material preparation and can include chrome plating through Jiyuan, subject to the agreed order finish and specification. Complete hydraulic cylinders are not included.
Define base-material and finished-surface checks · Prepare the rod-material specification
WHY JOTAIN / HYDRAULIC MATERIAL
Rod preparation & inspection
Confirm grade, heat treatment, surface preparation, straightness and dimensions.
Our processing routeRelated materials.
INSPECTION & DOCUMENTS
The 40Cr sample illustrates document fields. It is not a certificate for a hydraulic-rod order.
Technical details, inspection and quotation requirements
Hydraulic rod materials
Hydraulic cylinder rod & piston rod steel.
Steel bar stock and prepared material for piston, cylinder and guide rods.
Q&T · Peeled or turned · Ground · Finishing-prepared
01 / Supply options
Hydraulic rod steel: supply stages and inspection
Round bar stock
Raw or prepared steel bar for piston rods, cylinder rods and guide rods.
Peeled, turned & ground bars
Surface-prepared bar supply, including peeling or turning and centerless grinding.
Prepared rod forms
Rough-machined or finishing-prepared material for downstream rod production.
Supply covers bar stock and prepared material. Rod-related component forms and processing scope are confirmed for each order.
02 / Materials
Material options.
Choose the grade and standard for the application. These designations are not automatically interchangeable.
Main option
CK45 / 1045
Medium-carbon steel to consider for hydraulic rods, subject to the drawing’s strength, straightness and finish requirements.
Main option
42CrMo4 / 4140
Alloy route for higher-strength component requirements.
Alternative
40Cr
Alternative alloy route when the part and condition support it.
Technical review
Project-specific grade
Confirm from drawing, load and finishing route.
03 / Processing
Processing options.
Heat treatment, bar preparation, grinding and rough machining, available within an agreed supply route.
- 01
Heat treatment
Specify delivery condition and required properties.
- 02
Peeling or turning
Set incoming size and machining allowance.
- 03
Centerless grinding
Agree diameter, straightness and surface condition.
- 04
Rough machining
Define the work remaining after delivery.
Component details
From end to end.
Agree connection geometry, working length, machining allowance and the downstream surface route.
Enlarged details of the original photograph. No dimensions or finish capabilities are implied.
Contact JOTAIN
Talk to us about
hydraulic rod material.
Tell us which material or supplied form you need. If you already have a specification, include it with your enquiry.
Technical details for your enquiry
Supply requirements
Hydraulic cylinder rod steel for demanding surface and straightness requirements.
Review grade, delivery condition, diameter, straightness and surface stage against the finished rod drawing.
- 01ComponentHydraulic rods
- 02GradeCK45 / 1045
- 03ConditionQ&T
- 04InspectionMTC and heat traceability
- 05RFQDrawing + destination
Duty inputs
Operating and dimensional requirements
- Working load and buckling requirements
- Straightness
- Diameter tolerance
- Surface condition
Candidate grades
Steel grades and delivery condition
- CK45 / 1045Medium-carbon steel to consider for hydraulic rods, subject to the drawing’s strength, straightness and finish requirements.
- 42CrMo4 / 4140Alloy route for higher-strength component requirements.
- 40CrAlternative alloy route when the part and condition support it.
- Project-specific gradeConfirm from drawing, load and finishing route.
Supply and release
Inspection and batch traceability
- Supply stages
- Q&T · Peeled or turned · Ground
- Inspection
- MTC and heat traceability · Straightness and diameter · Surface condition
Product options
Hydraulic cylinder rod materials and supply stages.
Choose from CK45 / 1045, 42CrMo4 / 4140 and other drawing-matched grades in peeled, turned, ground or finishing-prepared condition.
Function and Load
Use hydraulic cylinder rod and piston rod terms against the drawing
Hydraulic cylinder and piston rod orders start with the drawing and working load. Rod geometry, stroke, support conditions and the downstream surface route help define the material and supply stage.
- Drawing revision, solid or hollow form, and connection geometry
- Load direction, cycling, stroke, unsupported length, and end restraint
- Working environment, machining allowance, and plating or finishing interface
Material Route
Compare grade, standard, condition, and section as one supply route
Common starting points include CK45 / 1045, 40Cr and 42CrMo4 / 4140, each specified under its own controlling standard. Delivery condition, section size and required properties complete the material route.
- Controlling grade designation and standard edition
- Annealed, normalized, heat-treated, or +QT delivery condition
- Section size, required properties, and any approved substitution
Dimensions and Surface
Separate bar diameter, final rod geometry, and surface finish
Separate incoming bar size, machining allowance and final rod diameter so every production stage is clear. Add straightness, runout, surface finish and inspection method from the drawing or order.
- Incoming, pre-finish, and final diameters with tolerances
- Straightness, runout, and surface roughness at the agreed inspection stage
- Peeled, turned, ground, polished, or plating-prepared supply condition
Production handoff
From heat-treated bar to a finishing-ready rod.
Available routes include heat treatment, peeling or turning, centerless grinding and rough machining, with inspection at the agreed supply stage.
- Heat treatment
- Peeling or turning
- Centerless grinding
- Rough machining
Source imagery
Hydraulic rod products and processing.
Examples of bright bar, component forms and grade options for piston rod and cylinder rod production.
Raw or prepared bar supply for downstream rod processing.
Improved surface condition for machining or further finishing.
Rod component example. Send the drawing to confirm the machining and finishing scope.
RFQ checks
Common hydraulic cylinder rod questions.
Key topics include grade, dimensions, straightness, surface condition, finishing allowance and inspection documents.
Are CK45, 1045, 42CrMo4, and 4140 automatically interchangeable for hydraulic rods?
No. Grade labels from different standards do not establish automatic equivalence. The order should name the controlling standard and edition, product form, condition, section size, required properties, inspection basis, and whether substitution review is permitted.
Does a peeled, turned, or ground bar description guarantee final rod dimensions?
No. A process name does not by itself establish diameter tolerance, straightness, surface finish, defect limits, or machining allowance. Those requirements become binding only when their values, methods, and acceptance basis are stated in the accepted order.
Which records should be agreed for a hydraulic cylinder rod steel order?
Agree the MTC scope, heat or batch traceability, dimensional and straightness checks, surface inspection, test methods, drawing revision, packing list, marking, and any third-party inspection record before order release.
Technical references
Hydraulic rod material and inspection guides.
Practical guidance on grade selection, surface preparation and order documentation.
Chrome Plated Rod Material GuideReview base steel, straightness, surface preparation, coating scope, and final inspection as one drawing-controlled route.Compare hydraulic piston rod material routesDefine rod function, load case, buckling inputs, surface route, straightness, and evidence before choosing a material route.Compare 42CrMo4 and CK45 hydraulic rod routesCompare material routes by controlling standard, condition, geometry, process stage, and inspection basis.
Component RFQLock the route before quotation.
Send the rod drawing, grade and standard, incoming and finished dimensions, delivery condition, straightness and surface requirements. Include the finishing work still required, inspection records, quantity and destination.
Discuss your project
Send your requirements directly to JOTAIN. We will reply to your email.