Knight Global Dual SDS EX Chain External Retract Control Pneumatic Balancer Series - KG KBCS-EX
SKU: 35432246137

Knight Global Dual SDS EX Chain External Retract Control Pneumatic Balancer Series - KG KBCS-EX

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Description

Knight Global Dual SDS EX Chain External Retract Control Pneumatic Balancer Series - KG KBCS-EXKnight Global Dual SDS EX Chain External Retract Control Pneumatic Balancer Series KG KBCS EX The external safety retract control is an adjustable safety feature that regulates the balancer's speed of vertical travel. If a load is lost, the cable or chain will slowly retract into the balancer versus suddenly accelerating upward. The hydraulic shocks from the external retract control put resistance on the thrust bearing allowing for a slow and

Knight Global Dual SDS EX Chain External Retract Control Pneumatic Balancer Series - KG KBCS-EX

The external safety retract control is an adjustable safety feature that regulates the balancer's speed of vertical travel. If a load is lost, the cable or chain will slowly retract into the balancer versus suddenly accelerating upward. The hydraulic shocks from the external retract control put resistance on the thrust bearing allowing for a slow and controlled retraction.

The external retract control balancer series are typically used:

  1. If the fixture that is attached to the balancer is a light hook picking up a heavy part
  2. If a part has the tendency to get stuck in the dunnage

In both these applications the retract will control the cable/chain from suddenly accelerating up. When specifying a pneumatic balancer, it is recommended for working loads to use 80% of the operating capacity for lifting applications. This approach compensates for the normal fluctuations within the plant compressed air supply. Working loads include part weight and handling device weight. Balancers are rated at 100 psi [6.8bar] therefore use the following example to calculate exact operating capability.

Formula for pneumatic balancer sizing: Example - plant air 60 psi, 350 air balancer, 80% load capability (0.60 air supply x 350 lbs. = 210 x .80 = 168 lbs. operating capability).

Features:

  • CE Compliant
  • Hands-Free Operation
  • Standard "Float" Mode
  • Internal Centrifugal Retract Control
  • Requires Non-Lubricated Clean/Dry Air
  • Knight recommends the use of high performance, extreme pressure, anti-wear food grade penetrating oil (Lubriplate 1241 Recommended) that penetrates and lubricates cable. For chain (SAE 50 to 90 EP oil or equivalent machine/gear oil) is Recommended

Benefits:

  • Optional Limit Switches
  • Optional High Relieving and Feather touch Controls
  • Multiple Suspension Kits Available

Specifications:

Model Number Rated Capacity lbs. [kg] Maximum Travel in. [mm]
KBC250S-054-EX 250 lbs [113kg] 54 in [1371mm]
KBC500S-084-EX 500 lbs [226kg] 84 in [2133mm]
KBC700S-052-EX 700 lbs [317kg] 52 in [1321mm]

Digital Assets:

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 35432246137

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Verified Purchase
linda k. bennett
Pawtucket, US
★★★★★ 5
edger
given as gift but I liked the weight and ease of handling. Seemed well made and simple to use. I was pleased with size and features.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 1, 2026
M
Verified Purchase
Movie Fan
Chelsea, US
★★★★★ 3
Nice Edger as long as the blade doesn't come loose -- and it will come loose, repeatedly!
Probably could've/should've rated this 2 stars yet it works well when it works. I purchased this edger to edge my drive and sidewalks and not for trenching. The edger arrived very quickly after I ordered it (I am not a Prime member so this was a nice surprise). Assembly was easy and straight-forward. The first use went smoothly and the edger performed flawlessly and provided clean, smooth edging. About 20 minutes into the second use I noticed that the edger was cutting and quickly determined that the blade was spinning freely -- fortunately the hex nut was still attached to the threaded shaft. I reviewed the manual that came with the edger, grabbed the correct sized socket and torque wrench. I removed the hex nut, the first washer, the blade and then the second washer. To install I followed the directions ensuring that the flats of the washer aligned with the flat on the shaft and tightened the hex nut to the specified 140 in-lbs. The edger worked well for about 10 minutes and the blade once again became loose. This time I replaced the original blade (which did not need to be replaced from a wear perspective) with a new B&D blade and new washers. Once again I followed the instructions and this time the edger performed flawlessly until about 5 minutes remaining in my edging when once again the blade came loose. my experience has most certainly been frustrating to say the least. one should not need to carry a socket and torque wrench with them and repeatedly need to tighten the blade. So, when the edger performs as intended it does an excellent job at edging; however I have no confidence that this edger will be able to perform as intended throughout repeated uses and more importantly has shown that it cannot complete my edging without requiring tightening the blade (which requires disassembly down to the second keyed washer). Potential buyers should be prepared for this experience and make your decision accordingly. Note: I tried contacting black and decker via twitter (@blackdeckerhome) and never received a response; I could not find a separate customer service/support twitter account. Trying to contact customer service via the phone these days is an exercise in patience to say the least.
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Reviewed in the United States on November 11, 2022
R
Verified Purchase
Robert S.
Lake Worth, US
★★★★★ 5
Trimmer results
Was alittle hesitant with this being B&D But I was surprised how great it really is. By far way above my expectations. Works like a charm and does a great job. Chose electric because I really don't have other than a driveway to do. But it really did good around the flower beds. Cord limits you alittle but nothing to cry about. Quiet also but still use ear plugs.
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Reviewed in the United States on May 9, 2026
A
Verified Purchase
Amazon Customer
Cuba, US
★★★★★ 5
Easy to use
Style: 20V Pwr Drv Trimmer (LST522-CA)
Light weight perfect for edging around the yard.
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Reviewed in the United States on April 24, 2026
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Verified Purchase
DonnyDJM.
Belleville, US
★★★★★ 5
Works great-easy-breezy!
Style: 20V Pwr Drv Trimmer (LST522-CA)
Wifey loves this!
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Reviewed in the United States on April 26, 2026

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