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Increasing Slot Capacity and Picking Efficiency

In a distribution center, fast and accurate order fulfillment defines success. But as SKU counts increase and order profiles change, racking and slotting systems that functioned adequately in the past may begin to compromise order fulfillment efficiency. Additionally, increased picking complexity and operator travel times mean distribution center managers face challenges of efficiently stocking, fulfilling, and replenishing their ever-increasing SKU counts while controlling labor costs and maintaining high customer service delivery levels.

Common Challenges:

As SKU counts and order demands increase, companies will typically face four main challenges which compromise either space or efficiency.
These include:

Larger picking footprint: As travel of the pick path increases due to additional racks to store increased products, so do labor costs, cycle times and overtime potential. With labor accounting for more than 70 percent of a distribution centers operating costs, these are not trivial increases. Additionally, rack expansion can result in additional expenses and costly construction.

Multiple pick zones/multiple pick vehicles: From very narrow aisle (VNA) picking of slow movers to end rider picking of floor level items, multiple vehicles used to complete an order often result in a merge/consolidation process that increases total labor costs and reduces productivity. Additional product touches, increased potential for lost or damaged products and the ability to only pick to one pallet, further compromise the efficiency and effectiveness of this model to handle additional SKUs.

Split locations and undersized slots: With more items to slot, distribution centers commonly add slots by decreasing slot size, or by adding additional slots for the same item in another area of the warehouse. While this solution may work for a limited time, it adds considerable labor requirements due to more frequent replenishment of smaller slots and longer pick paths to reach the second location. Added touches can increase the potential for product damage.

Reduced inventory in the pick slot: Cutting the available inventory in half increases the potential for stock “outages” or “short orders” which can negatively impact customer service levels and future revenue. In addition, poor ergonomics/access and risk of damage can increase the cost per case shipped and erode profit margins.

Innovative Multi-Level Lift Trucks
Enable Efficient Slotting Strategies for Growing Warehouses

Managers often delay solving the space vs. efficiency challenge due to the perception that the entire distribution center must be overhauled or expanded, and associated costs prohibit or delay proceeding with a solution. However, the use of multi-level lift trucks with a slotting strategy optimized for their picking range can reduce pick time, rack requirements, operators and overall cost per case in and out the door. Let’s take a closer look at both the truck and the slotting methodology.

The Multi-Level Lift Truck Solution

Facing SKU proliferation, space and efficiency challenges, warehouse, and distribution center operations look to materials handling suppliers to engineer a scalable solution. Working from a typical customer warehouse slotted for use with an end-rider and/or a high-level order selector, the innovative Yale® MO25 multi-level order selector solution, coupled with a new slotting strategy provides an affordable and scalable solution.

Based on a center-controlled rider, the simple, effective truck design features a rider platform that elevates 39 inches off the floor, resulting in an expanded “golden zone” picking range from zero to 10 feet. Coupled with the ability to pick to multiple high cube pallets like an end-rider, the MO25 multi-level order selector enables distribution center managers to slot fast movers in the 0–6-foot zone, and slow movers in the 6–10-foot zone, all quickly accessible by one operator on one truck. By integrating the MO25 multi-level order selector into your racking and slotting methodology, you can create 33 percent more available space in the pick which can yield between 30 percent and 140 percent more slots within the same footprint. The result is the ability to efficiently handle increased SKU counts and more orders in the same facility, with minimal cost and maximum productivity.

Slotting for Success
How to Optimize Slotting for Speed and Efficiency

The following pictures show examples of some of the slot profiles that have been designed with the MO25 multi-level order selector in mind, as compared to a conventional pick, which limits the selector to six feet at floor level.

  1. Turning two slots to four: In this scenario, the two slots formerly available for picking by the end-rider operator expand vertically to add another two slots accessible by the multi- level order selector operator, increasing pick slot capacity by 100
  2. Turning four slots to eight: In this scenario, the four slots formerly available for picking by the end-rider operator expand vertically to add another four slots accessible by the multi- level order selector operator, increasing pick slot capacity by 100
  3. Turning four slots to six: In this scenario, the four slots formerly available for picking by the end-rider operator expand vertically to add another two slots accessible by the multi- level order selector operator, increasing pick slot capacity by 50
  4. Turning fifteen slots to twenty-five: In this scenario, the fifteen hand-stacked slots formerly available for picking by the end-rider operator expand vertically to add another ten slots accessible by the multi-level order selector operator, increasing pick slot capacity by 66

Summing It Up
Solving the Space versus Efficiency Challenge

From grocery and freezer applications to consumer-packaged goods, from store replenishment to high-velocity e-commerce and multichannel operations, the MO25 multi-level order selector coupled with a simple re-slotting strategy can deliver a competitive advantage to companies by increasing pick slot capacity and efficiency. As this innovative approach to lift truck and slotting optimization gains widespread adoption, the following results have been reported, all of which have assisted with growth and picking efficiency, and helped minimize cost per case in and out the door:

  • Added 33-45% more pick positions and decreased operating costs by 25%
  • Number of actual pick aisles reduced from 28 to 21, resulting in a substantial reduction in travel time (miles) required to complete the pick
  • More than $500,000 savings in steel racking due to more condensed picking and fewer aisles
  • A reduction of seven operators and associated equipment, resulting in projected savings of $2 million over five years
  • Completion of entire order with one pick vehicle eliminates need for a VNA planned inventory retrieval (PIR) system and no requirement for a merge operation
YOUR NEAREST LOCATION
Gregory Poole Lift Systems

2620 Discovery Drive
Raleigh, NC 27616
(919) 468-9033

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