Spring Reels

John Evans’ Sons offers open and  enclosed spring reels. In addition to our standard line of reels, we can custom manufacture within standard sizes. If volume or application justify, we will manufacture a totally customized reel. Various load and deflection choices are available.

Open Reels - Plastic or Metal

John Evans’ manufactures “open style” construction spring reels, also known as arbor reels. In an open reel, the cable is exposed, wrapped around the exterior circumference of the reel, and contained between two flanges & under load generated by the internal spring. Spring reels provide lift assistance to any assembly that must be raised, reducing the “felt” weight and having the ability to make adjustments to pre-load and maximum travel. They can precisely counterbalance loads from less than one pound to over 50 pounds. Examples of applications include:
  • Counterbalancing of an elevator door, reducing the force required to close and maintain the closed condition of doors on each floor.
  • Reducing the energy required to lift a roll-up door on delivery trucks, or to lessen the effort to open and close the door/stairs on executive jets and other aerospace applications.
  • Enabling adjustments to height, pre-load and maximum travel for various tools and fixtures in ergonomically designed workstations.
  • Medical equipment designers can utilize spring reels to counterbalance a movable mechanism or monitor stand in the operating theater as well as hose, cable, tubing management around or within medical electronics cabinets.

Cad drawing of a spring powered reel.Open reels are available in a variety of sizes:

  • Diameters range from 1.64” to 6.0”
  • Widths vary from 0.49” to 1.63”
  • From 1.64" through 5.09" dia. available with plastic cases
  • From 3.38" through 6.00" dia. available with metal cases
All models of both metal and plastic are available with either a square hole Delrin plastic arbor (with a .320” square hole for mounting with a 5/16” carriage bolt) for a “bolt-thru” or a threaded stud for a “bolt-on” installation. Stainless steel & galvanized steel cable with ring terminals for outer end attachment as well as arbor style configurations can be found in our Spring Reels Specifications Table & Open Spring Reel Notes (below).

Open Spring Reel Selection Chart

(please refer to "Specifications Table and Reel Notes" below charts) You may "click" on various part numbers in the Specifications Table below to view the high resolution Load vs. Deflection charts or here:

Click to view larger in .pdf format

Chart 1

Load vs. deflection chart for metal & plastic reels #1

Click to view larger in .pdf format

Chart 2

Load vs. deflection chart for metal & plastic reels #2

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Chart 3

Load vs. deflection chart for metal & plastic reels #3

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Chart 4

Load vs. deflection chart for metal & plastic reels #4

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Open Spring Reels Chart & Notes

View case materials, cable & terminal configurations, arbor styles

Open Spring Reels Specifications Table

CLICK on underlined P/N to view load vs. deflection performance chart

 

Part
Number

Load (Lbs.)

Deflection (Feet)

Cable

X
Diameter
(Inches)

Y
Width
(Inches)

Arbor

PR104B
0.3 6.6 CA-1 1.64 0.49
AR-1
PR105B
0.5 5.0
PR108B
1.1 3.0
PR110B
2.0 2.3
PR210
2.0 6.0 1.95 0.55
PR212
2.6 4.5
PR213
3.4 3.75
PR216
4.3 2.7
PR310B
1.8 10.0 CA-3 3.38 0.98
AR-2
PR315B
3.6 6.5
MR315B
3.6 6.5 0.88
PR320B
6.3 4.5 0.98
MR320B
6.3 4.5 0.88
MR325B
12.5 3.5 0.98
PR420B
4.5 18.0 CA-4 5.09 1.10
PR425B
8.0 13.5
MR425B
8.0 13.5 5.00 0.88
MR425E
16.0 13.5 1.63
MR428D
15.0 12.0 1.38
MR428E
22.0 12.0 1.63
MR433D
22.5 10.0 1.38
MR433E
27.0 10.0 1.63
MR525D
10.0 27.0 6.00 1.38
MR542D
28.0 13.0 AR-3
MR550D
45.0 11.5
 
 
 
 
 
 
 

 

 

Open Spring Reel Notes

View case materials, cable & terminal configurations, arbor styles

Enclosed Spring Reels - Plastic Construction

Spring Reels (Enclosed) - Plastic Construction

For Point of Purchase (POP) Display and Merchandising design, our three enclosed reel product lines (spring retrievers) make excellent choices for product security and/or product placement. We offer three styles of spring-loaded cable retracting reels, all of which are made with plastic cases.

  • Miniature Enclosed Reel series
  • Retriever series
  • Enclosed Reel series

An enclosed reel is simply an open reel within a closed envelope or package. With an enclosed reel, the single function available is linear pull from the cable, which in the retracted position, is enclosed in the housing. The enclosed reels are available in a range of loads and extensions. The enclosed reel can be installed by putting it in a cavity, by means of a mounting plate that can be supplied, or in some cases, by using the through hole.

Spring reel load, extension characteristics, and capacities vary with the spring used. With a given maximum extension, the load may be varied by changing the width. Reels are provided with attached cable, equal in length to the maximum available cable extension. Other cable lengths are available as required.

Spring reel applications typically are those requiring long deflection in proportion to the load. They include such uses as door closers, counter balances, cord retractors, retail display theft prevention, tool balancers, or holders.

Request a quote for Enclosed or Open Spring Reels.

More Information & PDF Download

Download .pdf

Spring Reels (Enclosed)

Sales Sheet

Got A Question? Consult our Experts.

Our experts offer a depth of expertise to assist you with all parts of the process. We are ready to answer your questions in a timely manner and will help you define what you need. We produce custom springs for all purposes, and we are here to work with you on any of your customization needs.

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