The PC125i crimper features ContiTech’s latest CrimpIQ Pro Mode technology, offering over-the-air updates and streamlined crimp specification selection to help users achieve consistent, repeatable results. Its compact design improves portability without compromising performance, making it well suited for distributors and end users requiring flexibility and reliability in demanding applications.

“Launching the PC125i at the NAHAD conference in Indianapolis underscores our strategy of meeting customers where they are and delivering technology that directly supports how they operate every day,” said Jim Hill, Vice President of Distribution, Industrial Solutions Americas, ContiTech. “The PC125i is a clear example of how we’re aligning digital innovation, U.S.-based manufacturing, and aftermarket-focused solutions to help our distributors and end users stay competitive, reduce complexity, and create long-term value across the hose lifecycle.”

The new crimper is compatible with ContiTech’s traceability solutions, including its long-lasting CrimpCloud hose labeling technology. These traceability labels help distributors and end users simplify aftersales service, support product authentication, and enable assembly fabricator branding, and leverage QR-code-based digital connectivity for fast identification and quick replacements, enhancing resale opportunities in the aftermarket by providing clear, durable identification throughout the product lifecycle.

“With the PC125i, we’re finally bridging the gap between analog crimping in the service world and our most popular machine,” said Chad Peters, Product Manager, Industrial Solutions Americas, ContiTech. “This launch reflects our continued investment in solutions beyond rubber that takes the guesswork out of crimping, while maintaining the quality and reliability our customers expect from ContiTech.”

The PC125i supports ContiTech’s broader approach to customer-centric solutions by integrating digital capabilities with physical products. The ability to update crimp specs over the air helps ensure the machine remains current, reducing downtime and improving usability over time.

“CrimpIQ, especially with our simple Pro Mode, is a game changer centered around the operator’s daily use,” said Peters. “Three taps to crimp with minimal training required is huge in the assembly world. Our software approach makes it easy to make accurate and reliable assemblies without all the confusion of entering multiple settings. We want the operator to use our crimpers with confidence knowing we’re helping to eliminate errors from human entry.”

This new product aligns with ContiTech’s vision to become the customer’s first choice for material-driven solutions. The company continues to focus on close collaboration with customers and partners, emphasizing mutual value creation through innovation, operational excellence, and long-term support.

The PC125i crimper is available through authorized ContiTech distributors. Additional product information is available through ContiTech sales representatives and distribution partners.

ContiTech
continental.com

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Understanding the application

At the most basic level, a hydraulic flange serves as the connection between hydraulic components and piping or hose assemblies. Yet specifying the correct flange requires much more information than simply choosing a nominal size.

According to Robert Mackey, General Manager of Main Manufacturing Products Inc. and expert on the SAE J518 standard, engineers typically need nine key pieces of information to properly specify a flange:

• Pad size
• Bolt size and type
• Material
• Connection type
• Connection size
• Pressure rating
• Geometry
• Flange type
• Special features and other details, such as manufacturing origin

Many hydraulic systems today rely on SAE J518 flanges, which account for the majority of hydraulic flange usage worldwide. These rectangular four-bolt flange connections are technically aligned with ISO 6162 standards and remain the dominant standard across North America and many global markets.

However, engineers also encounter DIN, JIS, CETOP and proprietary flange configurations depending on the machine manufacturer and regional standards requirements.

Nominal sizing can create confusion

One of the first challenges in flange specification is understanding nominal sizing terminology.

Hydraulic flange sizes are commonly referenced by dash size in inch-based systems or by DN (designation nominal) in metric systems. For example, a 1-in. flange connection may be called a -16 flange or DN25.

But nominal sizing does not represent an exact physical measurement. As Mackey explained, nominal dimensions are simply naming conventions that group together a standardized set of dimensions and tolerances. Like pipe sizing, there may be no actual dimension that precisely equals the nominal size. This becomes particularly important when engineers attempt to identify an existing flange in the field.

Accurate measurement is critical

Flange sizing errors frequently occur because multiple flange standards can appear visually similar while having slightly different bolt patterns or dimensions.

Mackey emphasized that engineers must carefully measure bolt hole spacing and bolt circle dimensions — often within 0.005 in. (0.1 mm) — to ensure proper identification. Even small dimensional differences can create compatibility problems between standards.

The challenge becomes greater because manufacturing tolerances themselves may vary by approximately 0.010 in. or more. A flange that appears close enough visually may still fail to seal correctly or align properly under pressure.

One practical recommendation involves measuring bolt hole spacing using digital calipers by zeroing on the bolt hole diameter and then measuring outside-to-outside dimensions. This approach helps simplify identification while improving accuracy.

Pressure ratings depend on more than size alone

One of the most common misconceptions in flange selection is assuming that pressure capability depends solely on flange size. Generally the screw size and O-ring groove size will determine the pressure rating. The flange must attach to the port and the port will determine the pressure rating. The J518 standard provides pressure ratings for the ports.

Additionally, pressure rating is influenced by several interconnected design factors, including:

• Bolt size
• Bolt strength
• O-ring groove dimensions
• Flange geometry
• Material selection
• Port design

In many SAE flange systems, the port itself ultimately determines the maximum allowable pressure. Mackey also warned that geometry modifications can significantly alter load capacity. For example, removing one bolt from a four-bolt flange elbow might appear to reduce strength by only 25%, but the resulting torque loading can reduce effective strength by 40% to 50%.

This highlights why engineers should avoid modifying standard flange designs without understanding how those changes affect structural loading.

Choosing the right connection type

Sizing a flange also requires selecting the correct end connection. The connection type is important because it could be welded, threaded or flanged. Welded flanges include socket weld, butt weld and special weld grooved geometries. Threaded flanges include SAE straight thread, sometimes called SAE O-ring boss, BSPP and tapered threads which are BSPT and dry seal or NPTF (where the F stands for fuel). NPTF is a special thread that is interchangeable with, but not identical to the NPT thread.

Each option has advantages depending on the application. For example, the fluid power industry increasingly favors SAE straight-thread O-ring boss connections over tapered pipe threads because O-ring sealing offers improved leak prevention over time.

Socket weld and butt weld connections also require careful attention to pipe schedules, tube outside diameters and regional dimensional standards. Metric tubing can present additional complications because tube dimensions may vary between German, Japanese and Chinese standards even when nominally identified as the same size.

Geometry affects both flow and installation

Beyond sizing and pressure capability, flange geometry plays a major role in system packaging and maintenance accessibility.

Hydraulic flanges are available in numerous configurations, including:

• Inline connectors
• Elbows
• Run tees
• Branch tees
• Crosses
• Offset flanges
• Saddle welds
• Connector blocks

These configurations help engineers simplify piping layouts, reduce leak points and improve serviceability.

Offset flanges, for example, can help designers maintain full flow while accommodating tight clearances. Flanged elbows and adapters may reposition hose connections to improve maintenance access around pumps or accumulators.

Saddle welds provide another useful option by allowing a flange connection to mount directly onto the side of a pipe or reservoir rather than only at pipe ends.

O-ring versus flat-face flange designs

A critical consideration in hydraulic flange specification is whether the application requires an O-ring style flange or a flat-face companion flange. Most hydraulic systems today use O-ring flange designs because they provide more reliable sealing under high pressure. Modern captive O-ring grooves offer additional sealing force by containing the O-ring more securely within the groove geometry during compression.

Typically:

• O-ring flanges use clearance bolt holes
• Flat-face companion flanges use tapped holes

Flat-face flange heads are relatively uncommon but still exist in specialized applications. Engineers must ensure compatibility between mating surfaces because mismatched flange faces can prevent proper sealing entirely.

Material selection directly affects reliability

Material choice is another critical factor when sizing hydraulic flanges. Carbon steel remains the most common material for hydraulic flange construction, particularly low-carbon grades such as 1018 or 1025 steel that provide good weldability and pressure performance as well as improved surface finish.

However, many applications require alternative materials including:

• Stainless steel
• Aluminum
• Monel
• Hastelloy
• Inconel
• Duplex stainless steel

Mackey stressed the importance of using low-carbon “L” grades for stainless steel flanges, such as 304L or 316L, because they reduce the risk of corrosion and weld degradation over time. He also cautioned against using A36 structural steel for pressure-containing flange components, noting that it is unsuitable for pressure boundary applications despite its widespread availability.

Accessories can simplify system design

Specialized flange accessories can play an important role in improving hydraulic system performance and maintenance. Examples include:

• Flange adapters
• Gauge port adapters
• Connector plates
• Spacers
• Reducers
• Reservoir adapters
• Connector blocks

Gauge port adapters are particularly useful because they allow pressure measurement directly within a flange assembly without redesigning the hydraulic circuit. Flange adapters can also solve common compatibility issues such as converting between Code 61 and Code 62 flanges, rotating bolt patterns or adapting between inch and metric systems. These solutions often reduce downtime, simplify maintenance and minimize custom fabrication requirements.

Proper flange sizing reduces risk and cost

Although hydraulic flanges may appear to be routine components, they represent a highly engineered interface where small specification mistakes can lead to leakage, pressure loss, installation issues or premature failure. Accurate sizing requires engineers to evaluate standards, pressure ratings, geometry, materials and sealing methods together, not independently.

The post How do you size hydraulic flanges? appeared first on Hose Assembly Tips.

One of the latest developments is the introduction of new product variations and packaging options for hose protection wraps. Caplugs now offers pre-cut spiral wrap lengths packaged for easier purchasing, particularly for smaller maintenance and repair operations. These pre-cut assortments are also being sold through the company’s online channels, including its storefront on Amazon, said John Granelli, marketing communications manager. This move allows smaller shops that may not buy directly through traditional channels to access hose protection products more easily.

David Williams, President and CEO of Caplugs, said that the company acquired the hose spiral products in 2018, and they consolidated operations in Buffalo in the U.S. and Finland in Europe.

While retail and online sales represent one growth opportunity, Caplugs is also targeting original equipment manufacturers across the heavy equipment sector. The company said it is actively pursuing relationships with OEMs as it looks to integrate its spiral protection products earlier in the equipment design and assembly process. In some applications, spiral wrap is installed during hose assembly before delivery to OEMs, while in others it is installed later in the manufacturing process, creating multiple opportunities for integration.

Material performance is another focus area.  Caplugs offers protective sleeves and wraps using polyester, which the company says provides advantages compared with the nylon materials commonly used in the industry. While nylon remains widely adopted, often due to longstanding specification practices, newer materials can offer improved durability and protection.

“Sometimes people continue using a material simply because it has been used for years. But material development has moved forward. Occasionally, materials are selected because they’re in stock, even if they may not have the required properties, especially when it comes to safety,” said Juergen Proebstle, market manager, heavy-duty industry, Caplugs Europe. “We are working to educate customers. through published marketing collateral and certification data”

Luke Ferranti,  Market Director – Agriculture & Construction added, “With nylon, part of it is that it’s ‘the way it’s always been done.’ But we’ve seen examples where we feel our material provides higher protection and longer service life.”

Proebstle added that users often consider installation time as crucial, so offering easier-to-install materials that can reduce cycle time is where they find their advantage.

The company also emphasized that hose protection products serve multiple roles depending on the design. Protective sleeves are often used to improve safety by guiding hydraulic fluid away from operators in the event of a hose burst. Spiral wraps, by contrast, primarily protect hoses from external damage such as abrasion, punctures and impacts, conditions frequently encountered in demanding environments such as forestry and construction equipment.

“Education is a major part of our responsibility. We tailor discussions depending on whether we’re speaking with a safety engineer or a purchasing manager,” Granelli said. “Our goal is to provide the right information so they can become champions for the product.”

Customization options are also expanding. Caplugs offers polyester printing and laser-etching capabilities for its hose protection products, enabling customers to add identification markings or branding directly onto spiral wraps, protective sleeves or related components. Color coding can also be used to identify different hydraulic lines or circuits within complex machinery. It’s not just about selling a commodity product, it’s about customizing that product to the customer.

“From an engineering perspective, we can work directly with customer engineering teams to review applications, recommend improved solutions, and test samples to determine the best fit,” Ferranti said.

In addition to spiral wraps, the company is seeing increased demand for hose bend restrictors, which help prevent excessive bending at hose connections and extend hose service life. Bend restrictors are commonly used in hydraulic systems across mobile equipment and can also be customized with printed identification.

Visit caplugs.com to learn more.

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