Chrome plated rod / chrome plated bar general introduction
Chrome Plated Rod / Chrome plated bar is usually manufactured from cold rolled or hot rolled carbon steel round bars, by using high precision centerless grinding and polishing methods, and then chrome plated to a min. plating thickness of 20 microns (which is 0.0008″). The chrome plating layer provides corrosion resistance and a highly reflective appearance.
All the above providing us the ability to produce the best quality hydraulic cylinder rod (hydraulic cylinder shaft) around.
Chrome plated rods are also known as hard chrome plated shafts, chrome steel bar, chrome plated shafting, and chrome rod for hydraulic cylinders.
Overview of our chrome plated bar -Chrome rod supplier
- Steel grade:
Our hard chrome plated shafts are available with steel grade of SAE 1045, CK 45, C45; and stainless steel available on request. - Size range:
Our factory produces chrome steel bar / chrome plated shafting in a wide range of metric and imperial sizes as below.
External diameter 10 mm to 800 mm;
Imperial size chrome bar available from 3/8″ to 32″ - Length:
Our factory supplies chrome rod for hydraulic cylinders with random length and fixed length (cut to length) up on customer’s request, the max length can be 12 meters. - Tolerance:
Our chrome plated rods are supplied with diameter tolerance f7, f8, g6 on customers request. - Surface roughness:
The surface roughness of our factory’s hard chrome plated shafts is around Ra0.2μm(8 Ra), max. Ra0.4μm (16 Ra). - Hard Chrome Plated Thickness:
Our chrome plated shafting normally is with chrome plated thickness of Min. 25Microns (0.001″) ;
And other chrome plated thickness available on customers request, max. 100 xkmicrons.
Our chrome steel bar can pass the salt spray tested to 72h /96h / 200h in accordance with ASTM B-117, upon requests. - Custom made diameters and chrome thickness of the chrome steel bar is available upon request.
- Our factory’s chrome rod for hydraulic cylinders are available with or without Hardened Induction
- Packing: Our chrome plated rods are packed in cardboard tubes, to prevent any damage of the outer diameter during loading, shipping and unloading.
Product Standards
Our chrome plated bar usually is manufactured upon customers’ specification, and our chrome plated rod meets below standards.
- ASTM A108,
- ASTM A311
- other popular standards.
Material Chemical composition of hard chrome plated shafts
As one of the leading chrome plated bar manufacturers and suppliers, We supply chrome plated rod in medium carbon steel grades according to customers request, and the most popular steel grade is AISI 1045, JIS S45C, SAE1045, DIN CK45, SAE 4140, 42CrMo, and so on.
Here below is the chemical composition of steel grade SAE 1045 / CK45:
| Steel Grade | Chemical Composition % | ||||
| Carbon | Mn | Si | P | S | |
| SAE 1045 | 0.43-0.50 | 0.60-0.90 | – | 0.040 Max | 0.050 Max |
| CK 45 | 0.42-0.50 | 0.50-0.80 | 0.40 Max | 0.035 Max | 0.035 Max |
And below is the chemical composition of 4140 chrome plated rod for shafts.
| SAE 4140 | C% | Si% | Mn% | P% | S% | Cr% | Mo% |
| Min | 0.36 | 0.1 | 0.65 | 0.75 | 0.15 | ||
| Max | 0.44 | 0.4 | 1.1 | 0.04 | 0.04 | 1.2 | 0.35 |
Mechanical Properties of chrome plated shafting
| Steel Grade | Mechanical Properties | |||
| Yield Strength | Tensile Strength | Elongation | Hardness | |
| SAE 1045 | 75000 psi / 517 Mpa | 85000 psi / 585Mpa | 10% | Rc 60-72 |
| CK 45 | 75000 psi / 517 Mpa | 85000 psi / 585Mpa | 10% | Rc 60-72 |
With special heat treatment, the yield strength of our chrome plated rod can be min. 100K psi (690 Mpa).
For chrome plated shafts require high strength, we can supply SAE 4140 hard chrome plated bar. Here below is the machanical properties of SAE 4140.
| 4140 | Yield strength | Tensile Strength | Elongation | Hardness HB |
| Min | 800 Mpa /115K psi | 900 Mpa /130K psi | 20% | 270 HB |
Chrome plated piston rod Dimensions
As a leading chrome plated piston rod manufacturer and chrome rod supplier, we produces chrome plated bar with outer diameter upto 1000 mm, and here below is some popular sizes:
| Diameter(imperial size) | Weight per Foot | Diameter(metric size) | Weight per Meter | ||||||||
| (Inches) | (Lbs.) | mm | (KG.) | ||||||||
| 0.375 | 0.375 | 10 | 0.62 | ||||||||
| 0.438 | 0.512 | 12 | 0.89 | ||||||||
| 0.5 | 0.668 | 14 | 1.21 | ||||||||
| 0.625 | 1.043 | 15 | 1.39 | ||||||||
| 0.688 | 1.264 | 16 | 1.58 | ||||||||
| 0.75 | 1.502 | 17 | 1.78 | ||||||||
| 0.875 | 2.044 | 18 | 2 | ||||||||
| 0.938 | 2.349 | 20 | 2.47 | ||||||||
| 1 | 2.67 | 22 | 2.98 | ||||||||
| 1.063 | 3.017 | 25 | 3.85 | ||||||||
| 1.125 | 3.379 | 28 | 4.83 | ||||||||
| 1.188 | 3.768 | 30 | 5.55 | ||||||||
| 1.25 | 4.172 | 32 | 6.31 | ||||||||
| 1.313 | 4.603 | 35 | 7.55 | ||||||||
| 1.375 | 5.048 | 36 | 7.99 | ||||||||
| 1.5 | 6.008 | 40 | 9.86 | ||||||||
| 1.563 | 6.523 | 45 | 12.48 | ||||||||
| 1.625 | 7.05 | 50 | 15.41 | ||||||||
| 1.688 | 7.608 | 55 | 18.65 | ||||||||
| 1.75 | 8.177 | 56 | 19.33 | ||||||||
| 1.875 | 9.387 | 60 | 22.19 | ||||||||
| 1.938 | 10.028 | 63 | 24.47 | ||||||||
| 2 | 10.68 | 65 | 26.05 | ||||||||
| 2.125 | 12.057 | 70 | 30.21 | ||||||||
| 2.25 | 13.517 | 75 | 34.68 | ||||||||
| 2.375 | 15.06 | 80 | 39.46 | ||||||||
| 2.5 | 16.688 | 85 | 44.54 | ||||||||
| 2.625 | 18.398 | 90 | 49.94 | ||||||||
| 2.75 | 20.192 | 95 | 55.64 | ||||||||
| 2.875 | 22.069 | 100 | 61.65 | ||||||||
| 3 | 24.03 | 105 | 67.97 | ||||||||
| 3.25 | 28.202 | 110 | 74.6 | ||||||||
| 3.375 | 30.413 | 115 | 81.53 | ||||||||
| 3.5 | 32.708 | 120 | 88.78 | ||||||||
| 3.625 | 35.085 | 125 | 96.33 | ||||||||
| 3.75 | 37.547 | 130 | 104.19 | ||||||||
| 4 | 42.72 | 140 | 120.83 | ||||||||
| 4.25 | 48.227 | 150 | 138.71 | ||||||||
| 4.5 | 54.068 | 160 | 157.82 | ||||||||
| 4.75 | 60.242 | 170 | 178.17 | ||||||||
| 5 | 66.75 | 180 | 199.75 | ||||||||
| 5.25 | 73.592 | 200 | 246.6 | ||||||||
| 5.5 | 80.768 | 250 | 385.31 | ||||||||
| 6 | 96.12 | ||||||||||
| 6.5 | 112.808 | ||||||||||
| 7 | 130.83 | ||||||||||
| 7.5 | 150.188 | ||||||||||
| 8 | 170.88 | ||||||||||
| 8.5 | 192.908 | ||||||||||
| 9 | 216.27 | ||||||||||
| 10 | 267 | ||||||||||
| 11 | 323.07 | ||||||||||
| 12 | 384.48 | ||||||||||
| Note: Other sizes are available on customer’s request, Our Chrome rod max size is diameter 1000 mm. | |||||||||||
Dimension tolerance of chrome steel bar
Our chrome rods can be supplied with tolerance of g6, f7, f8 and f9 on customers request. Here below is the tolerance chart.
| Tolerances for Chrome Shafts (ISO 286-2) | |||||||||||
| over | up to | Upper and Lower limits in micrometer (0.001 mm) | |||||||||
| d9 | e8 | f7 | g6 | h5 | h6 | h7 | h8 | h9 | h11 | ||
| – | 3 | -20 | -14 | -6 | -2 | 0 | 0 | 0 | 0 | 0 | 0 |
| -45 | -28 | -16 | -8 | -4 | -6 | -10 | -14 | -25 | -60 | ||
| 3 | 6 | -30 | -20 | -10 | -4 | 0 | 0 | 0 | 0 | 0 | 0 |
| -60 | -38 | -22 | -12 | -5 | -8 | -12 | -18 | -30 | -75 | ||
| 6 | 10 | -40 | -25 | -13 | -5 | 0 | 0 | 0 | 0 | 0 | 0 |
| -76 | -47 | -28 | -14 | -6 | -9 | -15 | -22 | -36 | -90 | ||
| 10 | 18 | -50 | -32 | -16 | -6 | 0 | 0 | 0 | 0 | 0 | 0 |
| -93 | -59 | -34 | -17 | -8 | -11 | -18 | -27 | -43 | -110 | ||
| 18 | 30 | -65 | -40 | -20 | -7 | 0 | 0 | 0 | 0 | 0 | 0 |
| -117 | -73 | -41 | -20 | -9 | -13 | -21 | -33 | -52 | -130 | ||
| 30 | 50 | -80 | -50 | -25 | -9 | 0 | 0 | 0 | 0 | 0 | 0 |
| -142 | -89 | -50 | -25 | -11 | -16 | -25 | -39 | -62 | -160 | ||
| 50 | 65 | -100 | -60 | -30 | -10 | 0 | 0 | 0 | 0 | 0 | 0 |
| -174 | -106 | -60 | -29 | -13 | -19 | -30 | -46 | -74 | -190 | ||
| 65 | 80 | -100 | -60 | -30 | -10 | 0 | 0 | 0 | 0 | 0 | 0 |
| -174 | -106 | -60 | -29 | -13 | -19 | -30 | -46 | -74 | -190 | ||
| 80 | 100 | -120 | -72 | -36 | -12 | 0 | 0 | 0 | 0 | 0 | 0 |
| -207 | -126 | -71 | -34 | -15 | -22 | -35 | -54 | -87 | -220 | ||
| 100 | 120 | -120 | -72 | -36 | -12 | 0 | 0 | 0 | 0 | 0 | 0 |
| -207 | -126 | -71 | -34 | -15 | -22 | -35 | -54 | -87 | -220 | ||
| 120 | 140 | -145 | -85 | -43 | -14 | 0 | 0 | 0 | 0 | 0 | 0 |
| -245 | -148 | -83 | -39 | -18 | -25 | -40 | -63 | -100 | -250 | ||
| 140 | 160 | -145 | -85 | -43 | -14 | 0 | 0 | 0 | 0 | 0 | 0 |
| -245 | -148 | -83 | -39 | -18 | -25 | -40 | -63 | -100 | -250 | ||
| 160 | 180 | -145 | -85 | -43 | -14 | 0 | 0 | 0 | 0 | 0 | 0 |
| -245 | -148 | -83 | -39 | -18 | -25 | -40 | -63 | -100 | -250 | ||
| 180 | 200 | -170 | -100 | -50 | -15 | 0 | 0 | 0 | 0 | 0 | 0 |
| -285 | -172 | -96 | -44 | -20 | -29 | -46 | -72 | -115 | -290 | ||
| 200 | 225 | -170 | -100 | -50 | -15 | 0 | 0 | 0 | 0 | 0 | 0 |
| -285 | -172 | -96 | -44 | -20 | -29 | -46 | -72 | -115 | -290 | ||
| 225 | 250 | -170 | -100 | -50 | -15 | 0 | 0 | 0 | 0 | 0 | 0 |
| -285 | -172 | -96 | -44 | -20 | -29 | -46 | -72 | -115 | -290 | ||
| 250 | 280 | -190 | -110 | -56 | -17 | 0 | 0 | 0 | 0 | 0 | 0 |
| -320 | -191 | -108 | -49 | -23 | -32 | -52 | -81 | -130 | -320 | ||
| 280 | 315 | -190 | -110 | -56 | -17 | 0 | 0 | 0 | 0 | 0 | 0 |
| -320 | -191 | -108 | -49 | -23 | -32 | -52 | -81 | -130 | -320 | ||
| 315 | 355 | -210 | -125 | -62 | -18 | 0 | 0 | 0 | 0 | 0 | 0 |
| -350 | -214 | -119 | -54 | -25 | -36 | -57 | -89 | -140 | -360 | ||
| 355 | 400 | -210 | -125 | -62 | -18 | 0 | 0 | 0 | 0 | 0 | 0 |
| -350 | -214 | -119 | -54 | -25 | -36 | -57 | -89 | -140 | -360 | ||
What is the advantages of our chrome plated rod?
Our factory’s chrome rod for hydraulic cylinders is favored by customers because of the following advantages:
a. Carbon steel balances durability, hardness, and wear resistance using formability, weldability, and durability;
b. Chrome plating provides corrosion resistance along with an Extremely reflective look
c. High precision tolerances, which ensures when used to make hydraulic piston rod, it can fit the cylinder precisely.
d. Good Hardness: the surface hardness attaining HV850 minimal and upward, which not only help improve wear resistance but also help extend the life span of these chrome plated rods, thereby helping the consumer save the cost.
e. High performance of strength: The yield strength of chrome plated bars can be 75000 psi up to 100000 psi, depends on the material and heat treatment method.
Applications of Chrome Rod
Chrome plated bar is mostly designed to be used for hydraulic piston rod and pneumatic piston rod manufacturing and repairing. So some people also may call this product hydraulic cylinder rod approximately.
However, besides the above, chrome plated rod can also be used in applications where high performance surface finishing and high accuracy dimension tolerance are required.
Here below is the application list of the chrome rods:
- Chrome rod for hydraulic cylinders, this is the most popular application.
- Pneumatic cylinders / air cylinders (chrome plated piston rods/ chrome cylinder rod)
- Guide rods for plastic manufacturing machine and hydraulic machinery
- Rollers for machines, such as packing machine rollers, printing machine rollers
- Shaft for machinery, such as Textile machinery center shaft, Transport machinery center shaft, etc.
- Ejector rods for injection molding machines
- Vibration absorbers and pistons for some industrial machinery.
Photos of Chrome Plated Rod Packing
Why Choose us?
Here below are the main advantages of our products and services.
- Rich manufacturing experience: our factory has nearly 30 years manufacturing experience for chrome plated rods;
- Advanced manufacturing equipment and facilities, including: cold drawing machine, honing machine, skiving & roller burnishing machine, straightening machine, polishing machine, heat treatment furnace, grinding machine, etc. Our professional engineers do regular scheduled maintenance on these machines to guarantee them work well.
- High quality raw material: our raw materials for chrome plated shafting are mainly from the famous China steel makers, such as TPCO, BAO STEEL, SHA STEEL, which are best and largest steel rod manufacturers in China.
- High precision: Our chrome plated rod are manufactured with high dimension precision, tolerance can be ISO f7, f8 or g6, upon request. Which ensures the precision of the hydraulic cylinder or the machine.
- Reliable Packing: All the chrome plated shafts will be oiled by the anti-rust oil before delivery. And to protect the outer surface of the chroming of piston rods, we will use cardboard (paper pipe) to pack each rod, and then pack with seaworthy package such as wooden cases or rope wraps.
- Strictly quality control: Our factory has a QC team of more than 10 persons. All the chrome rods will be inspected before delivery. The inspections including: Chemical Analysis Test, Tensile Test, Dimension Inspection, Roughness Testing, Chrome plated thickness test and other tests according to standards and cusotmer’s requirements.
- Mature quality management system: our Total quality management system ensures all the working processes related to product quality are in good control.
Besides chrome plated rods, we also produce and supply induction hardened chrome plated cylinder rods.
TEL: +8618611720998
