Offices and businesses handle sensitive information stored on paper documents and electronic devices. When any of these items need to be disposed of, shredders are the go-to solution. However, there are several types of shredders to know about because each model serves a distinct purpose. Here’s what you need to know before buying a machine.
1. Strip-Cut Shredders
Strip-cut machines use rotating blades to slice sheets into long, narrow strips. Many commercial models process around 30 sheets per pass. While small deskside units have lower capacities, heavy-duty industrial machines are able to accommodate batches above 30 sheets. Operators typically feed documents manually through the opening, making these machines well suited for routine paper disposal when teams don’t require automatic batch processing.
This type of shredder is less secure than crosscut or micro-cut designs because they reduce paper in one direction. Nevertheless, it is useful for destroying many types of office documents.
The width of the shredded paper affects the level of document security. Common strip-cut widths include approximately 1/4 inch and 1/8 inch. The narrower the strip, the less information an individual can reconstruct. A 1/4-inch cut fits general records, routine administrative paperwork, and outdated forms that don’t contain highly sensitive information.
2. Crosscut and Micro-Cut Shredders
For workplaces handling confidential paperwork, crosscut shredders slice paper in two directions and produce very small particles. The tiny pieces make document reconstruction extremely difficult. Therefore, this cutting style is suitable for workplaces that process employee records, customer information, internal financial documents, and more.
Micro-cut machines take that same principle further by producing particles ranging in size from two to five millimeters. For offices with strict confidentiality requirements, the smaller particle size offers a high level of physical document destruction.
Understanding Security Standards
DIN 66399 is a data-destruction standard that classifies how securely different types of information carriers must be destroyed. The standard covers several media categories, including hard drives, optical discs, electronic storage devices, and paper. For paper, DIN 66399 uses the letter P followed by a number from 1 through 7.
The P-level identifies the degree of destruction. As the number increases, the permitted strip width or particle size decreases, making the information progressively difficult to reconstruct.
- P-1: General documents that simply need to become unreadable, such as catalogs, brochures, and other non-sensitive material.
- P-2: Internal business information, including outdated instructions, notices, forms, and routine company communications.
- P-3: Sensitive, confidential, or personal information, such as sales reports, quotations, orders, and documents containing private addresses.
- P-4: Highly sensitive personal or business records, including payroll information, personnel files, employment contracts, financial records, and tax documents.
- P-5: Confidential information requiring substantial protection, such as medical records, patents, strategic documents, and proprietary business information.
- P-6: Secret documents that require exceptional security precautions, including certain research, development, or official records.
- P-7: Strictly confidential material requiring the highest level of destruction, such as documents associated with military, intelligence, or similarly sensitive operations.
The standard uses separate classifications for electronic storage devices, including H-levels for magnetic hard drives and E-levels for electronic memory. These distinctions help organizations select equipment that meets the destruction requirements of each storage medium.
3. Auto-Feed Shredders
Auto-feed machines allow operators to place a stack of paper into a feed tray or enclosed compartment. The mechanism draws sheets into the cutters in controlled groups. As a result, employees don’t have to stand at the machine and feed every small stack by hand.
The design is beneficial for departments that accumulate sizable batches of records and need to destroy them in scheduled groupings. Accounting offices, administrative departments, records teams, and other commercial settings may process hundreds of sheets during a single shredding session.
How Duty Cycle Affects Use
One of the signs that you need a new shredder is that the duty cycle no longer supports operations. Duty cycle indicates how long a shredder runs continuously before the motor must cool down. Offices with limited staff and minor paper-shredding needs operate the machines for brief periods.
On the other hand, commercial shredders handle extended operating periods. Some heavy-duty models run continuously to accommodate facilities that process repeated quantities of material throughout the workday.
Sheet capacity and duty cycle measure different aspects of a shredder’s performance. One machine may accept a substantial stack with each pass but require periodic cooldowns, whereas another model with a similar feed capacity may continue running without those interruptions. High-volume offices and records departments rely on extended duty cycles to sustain an efficient workflow.
4. Hard Drive Shredders
Information doesn’t exist exclusively on paper. Some facilities prefer to physically destroy electronic storage media after it reaches the end of its life.
Hard drive shredders use powerful cutting systems to break apart traditional hard disk drives (HDDs), which store information magnetically on rotating platters. Their reinforced steel cutters crush and fragment the metal housing and internal components, damaging the platters that hold stored information.
Because hard drives contain rigid housings, metal parts, and other durable components, standard office paper shredders cannot process them. Specialized equipment uses heavy-duty drive systems and cutting assemblies to handle these materials. Depending on the machine, operators may feed drives individually or process multiple units through a larger industrial system.
Solid-state drives (SSDs) require a different approach because they store information on flash memory chips rather than magnetic platters. Breaking an SSD into large fragments may leave individual memory chips intact. Organizations destroying these devices must use equipment that reduces the storage components to an appropriately small particle size for their security requirements.
5. Electronic Media Shredders
Beyond hard drives, businesses store information on various removable electronic devices. CDs, DVDs, USB flash drives, and memory cards may retain sensitive information after employees stop using them. Electronic media shredders physically destroy these items to prevent data recovery.
Optical media shredders use rotating cutting mechanisms to break discs into small fragments, damaging the layers that contain recorded information. Some machines accommodate multiple disc formats, allowing offices to destroy outdated software discs and archived files. The required particle size depends on the sensitivity of the information and the applicable destruction standard.
Flash-based storage devices present different challenges because their data resides on compact memory chips. Specialized electronic media shredders use cutting systems designed to fragment these components. Machines intended for CDs or DVDs aren’t necessarily suitable for flash drives or memory cards, so organizations must verify which materials each machine supports.
Electronic media destruction is particularly relevant for IT departments, records management teams, and organizations replacing outdated storage technology. Selecting equipment based on the storage medium and required security level helps ensure that the destruction process addresses the actual components containing information.
Shredders Serve Different Facility Functions
Shredding serves substantially different functions across a workplace. A records department may focus on document security, while an IT team may require physical destruction of storage devices. Each application depends on a different cutting system, feed design, and capacity range. Looking at types of office shredders will help you find the appropriate machine for your operations.
