Addendum_01 040826.docx

April 8, 2026

TOWN OF KILLINGLY

Request for Proposal For NH78 Acetal Material Chain, Shear Pin Sprockets & Chain Take-Up Assemblies

ADDENDUM NO. 1

Purpose of Addendum

This Addendum is issued to clarify acceptable materials, component configurations, and potential design. This addendum is made part of the bid documents. All bidders shall review and incorporate the following into their proposals as applicable.

Please provide us an answer to the below question:

Question:

1. For the shear pin hubs, the supplier believes the hardware/bolts are 316 stainless steel and the hub itself is 304 stainless steel. They also noted that the currently specified design appears to be an older design. In their experience, the older nylon hubs had a tendency to deform when shear pins broke, and keyways could also fail. Their metal hub design was developed to eliminate those issues. Do you have issues with this design change?

They also recommended the nylon sprockets they quoted. According to the supplier, these are stronger than urethane alternatives and include a chain-saver rim. They mentioned that many customers prefer these over the plastic style originally described.

For the tensioners/Takeups, they confirmed theirs are the same as shown in the drawings. The only design change is that they have replaced the 410 stainless roll pin with a 5/16" x 3" full-thread bolt. Their view is that this makes installation and removal easier, since it can be handled with a 9/16" nut driver on a drill. That said, if you prefer the original roll pin arrangement, they can still supply it that way.

Response:

We will accept the above-mentioned substitutions. Please quote both so we can compare.

Please let us know your preference on the following items so we can finalize the quote:

Question:

1. Whether 304 stainless hubs are acceptable in place of 316.

Response:

We will accept the substitution. However please quote both so we can compare.

Question:

1. Whether you would like green trip pins or the standard silver trip pins Response:

We would prefer the stainless-steel green corrosion resistant heavy duty, high strength trip pins.

Question:

1. Whether you want to keep the updated full-thread bolt design on the tensioners or prefer the original roll pin.

Response:

The full-thread stainless steel bolt design is acceptable.

Question:

1. Whether you would like us to price the option for one frame size larger gearmotors.

Response:

Not at this time.

1. General Requirements

· All proposed deviations or alternatives must be:

· Clearly identified in the bid submission

· Accompanied by manufacturer specifications and justification

· The Town reserves the right to:

· Accept or reject any proposed alternative

· Require adherence to original specifications if deemed in the Town’s best interest

2. Pricing

· All costs associated with this added scope, including labor, materials, hardware, fittings, supports, terminations, and testing, shall be included in the Contractor’s proposal or provided as a clearly identified add-on price, as directed by the RFP.

3. Acknowledgement

· Failure to acknowledge this Addendum may result in rejection of the proposal.

Addendum No.1 is available on the Town of Killingly Website https://www.killingly.org/finance/pages/bids-and-rfps and the CTSource Website https://portal.ct.gov/DAS/CTSource/Login

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