Predictika · Power transmission chain drives

An AI sales agent's roller chain drive, checked before it goes out

An AI sales agent prepares a roller chain drive for a customer: a Renold BS roller chain (06B to 32B, simplex, duplex or triplex), a driver and a driven stock sprocket with their tooth counts and bores, the centre distance, whether a cranked link is used, whether the drive is severe duty, and the chain strength it states. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the Renold Transmission Chain Catalogue and returns a verdict, every reason and the figures it computed.

Scope: Renold BS roller chain (06B to 32B) with stock plain-bore sprockets: tooth counts, bores, centre distance, cranked links and stated chain strength. See everything this validator covers

This validator models a Renold BS roller chain drive built from the chain and the stock plain-bore sprockets in the public Renold Transmission Chain Catalogue, not just the scenarios shown below.

  • Chain — sizes 06B, 08B, 10B, 12B, 16B, 20B, 24B, 28B and 32B as simplex, duplex or triplex, each with the minimum tensile strength the catalogue table gives; a stated strength must equal it.
  • Stock sprockets — the 346 stock plain-bore sprocket sizes the catalogue lists for these chains (tooth counts by size and number of strands), each with the minimum and maximum bore the catalogue gives. A tooth count that is not a stock size goes to a person as a special sprocket made on request, and a bore outside the stock range blocks the quote.
  • Drive rules from the catalogue text — no driven sprocket over 114 teeth; good practice of at least 50 teeth in total; a centre distance of 30 to 50 pitches, with under 30 pitches or over 2 metres referred to Renold's technical staff; no cranked link on impulsive, highly loaded or high-speed drives, and a person to confirm one anywhere else; and a preference for an odd-toothed driver.

Any Renold BS chain drive that touches these rules is in scope — not only the scenarios pictured here. Not covered: prices (Renold does not publish list prices, so this page shows no price build-up), chain power ratings and service factors (Renold's online Chain Selector), taper-bore sprockets, ANSI chain, other Renold chain ranges, sprocket sizes above 2 inch pitch, and chain length or lubrication. Assumptions: the catalogue gives sprocket guidance as recommendations, so the validator turns them into a person-to-confirm finding rather than a block, except the 114-tooth limit and the cranked link on severe duty drives, which the catalogue states as limits.

The AI sales agentBuilds the chain drive from the conversation and says it is ready.
Predictika validatorChecks every rule at once and returns the verdict, each finding, and the computed figures.

7 scenarios in 3 groups · each group runs from the agent’s first attempt to the outcome · click one to switch

What the agent proposes

The AI sales agent says

Illustrative agent statement. The validator receives the structured request below.

Proposing agent: AI sales agent (scripted)

Before sending, the agent must call Recorded run

Predictika validator


      

        
        
        
      

      
Waiting for the call.

      
    

  

  
  

    
Where rules-based CPQ gets it wrong
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Our assessment of what a typical rules-based CPQ (product rules, price rules and validation rules, as in Salesforce CPQ) does with the same cases. It is a judgment about effort and reliability, not a claim that nothing can be built.

    
What the validator caughtTypical rules-based CPQPredictika
A stock sprocket table that depends on chain size, strands and tooth count (346 stock sizes)Only with workarounds
Each size and strand count has its own list of stock tooth counts and its own bore range per tooth count. A rules-based CPQ needs a large compatibility table or hundreds of rules, and every catalogue edition means editing them.		Chain size, strands, tooth counts and bores arrive in one request and are matched against the catalogue table on every call.
A cranked link that is fine on one drive and forbidden on anotherOnly with care
The restriction depends on the drive duty on one line and a part on another, so it needs a cross-line rule that interacts with the others.		The part and the duty are in one request and the rule is checked with all the others.
Guidance that mixes hard limits and judgement (114 teeth, 50 teeth in total, 30 pitches)Only with care
Hard limits and recommendations need different outcomes, and the pitch rule depends on the chain size, so a centre distance in millimetres has to be converted.		Each rule returns its own kind of finding, block or person-to-confirm, with the numbers in plain words.
A chain strength the quote statesOnly with care
The stated strength is derived from the chain size and strands, so a rule has to recompute it and compare.		The stated strength is a field in the request, compared with the catalogue figure on every call.
Every problem returned in one answerOnly with workarounds
Rules tend to fire as the quote is saved or a step is completed, so a person often fixes one error and meets the next.		All findings come back together, whatever order the choices arrived in.

  

  

    
What this validator catches: findings from its test cases
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Every rule is checked on every call, in any order the choices arrive; one problem never hides another. Blocking findings stop the quote; approval findings need a person to sign off; everything else is computed.

    
1The driven sprocket has 150 teeth; the Renold catalogue says no driven sprocket should have more than 114 teeth.
2The quote states a minimum tensile strength of 9,800 N; the catalogue gives 8,900 N for this chain.
3The quote states a minimum tensile strength of 60,000 N; the catalogue gives 57,800 N for this chain.
4The quote has 4 strands; Renold BS chain is made as simplex (1), duplex (2) or triplex (3).
5The driver bore of 55 mm is outside the 20 to 50 mm range of the stock sprocket.
6The driver bore of 18 mm is outside the 20 to 50 mm range of the stock sprocket.
7The driven bore of 66 mm is outside the 38 to 65 mm range of the stock sprocket.
8No stock plain-bore driver sprocket with 18 teeth is listed for this chain; it would be a special sprocket made on request, so a person should confirm it.
9No stock plain-bore driven sprocket with 60 teeth is listed for this chain; it would be a special sprocket made on request, so a person should confirm it.
10The quote has a cranked link on an impulsive, highly loaded or high-speed drive; the Renold catalogue says not to use cranked links on these drives.
11The quote has a cranked link; the Renold catalogue does not recommend it and says drives should be set up with an even number of pitches, so a person should confirm it.
12The two sprockets have 49 teeth in total; the Renold catalogue says good practice is at least 50, so a person should confirm.
13The centre distance of 571 mm is under 30 chain pitches; the Renold catalogue recommends 30 to 50 pitches and asks for drives below 30 pitches to be discussed with its technical staff.
14The centre distance of 2,001 mm is over 2 metres; the Renold catalogue asks for these drives to be discussed with its technical staff.
15Both sprockets have an even number of teeth; the Renold catalogue says wear is then poorly distributed over chain and sprockets and prefers an odd-toothed driver, so a person should confirm.
16No stock plain-bore driver sprocket with 17 teeth is listed for this chain; it would be a special sprocket made on request, so a person should confirm it.
17No stock plain-bore driven sprocket with 57 teeth is listed for this chain; it would be a special sprocket made on request, so a person should confirm it.

  

  

    
Scenarios and results
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The recorded result of the validator for each scenario on this page: the request the AI agent sent, the verdict, and every finding, in the order they appear above.

    
1. Driven sprocket size and stated strength: Simplex 06B drive with a 150-tooth driven sprocket

    
The agent's request. Please quote a 06B simplex Renold roller chain drive with a 19-tooth driver sprocket bored to 20 mm and a 150-tooth driven sprocket bored to 40 mm, at a centre distance of 450 mm. The drive is ordinary duty. It uses no cranked link. The quote states a minimum chain tensile strength of 9,800 N. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Driven sprocket over 114 teeth. The driven sprocket has 150 teeth; the Renold catalogue says no driven sprocket should have more than 114 teeth.
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  • Stated tensile strength does not match. The quote states a minimum tensile strength of 9,800 N; the catalogue gives 8,900 N for this chain.
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2. Driven sprocket size and stated strength: The agent resubmits after fixing the errors

    
The agent's request. Please quote a 06B simplex Renold roller chain drive with a 19-tooth driver sprocket bored to 20 mm and a 114-tooth driven sprocket bored to 40 mm, at a centre distance of 450 mm. The drive is ordinary duty. It uses no cranked link. The quote states a minimum chain tensile strength of 8,900 N. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Drive summary. Minimum tensile strength 8,900 N for the chain; sprockets of 19 and 114 teeth (133 teeth in total), centre distance 450 mm.
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3. Bore against the stock sprocket range: Simplex 16B drive with a 65 mm bore on a 19-tooth driven sprocket

    
The agent's request. Please quote a 16B simplex Renold roller chain drive with a 30-tooth driver sprocket bored to 50 mm and a 19-tooth driven sprocket bored to 65 mm, at a centre distance of 1,000 mm. The drive is ordinary duty. It uses no cranked link. The quote states a minimum chain tensile strength of 60,000 N. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Driven bore outside the stock range. The driven bore of 65 mm is outside the 20 to 60 mm range of the stock sprocket.
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  • Fewer than 50 teeth in total. The two sprockets have 49 teeth in total; the Renold catalogue says good practice is at least 50, so a person should confirm.
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4. Bore against the stock sprocket range: The agent resubmits after fixing the errors

    
The agent's request. Please quote a 16B simplex Renold roller chain drive with a 30-tooth driver sprocket bored to 50 mm and a 21-tooth driven sprocket bored to 65 mm, at a centre distance of 1,000 mm. The drive is ordinary duty. It uses no cranked link. The quote states a minimum chain tensile strength of 60,000 N. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Drive summary. Minimum tensile strength 60,000 N for the chain; sprockets of 30 and 21 teeth (51 teeth in total), centre distance 1,000 mm.
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5. Cranked link, severe duty and centre distance: Duplex 12B drive with a cranked link on a severe duty drive

    
The agent's request. Please quote a 12B duplex Renold roller chain drive with a 17-tooth driver sprocket bored to 25 mm and a 57-tooth driven sprocket bored to 50 mm, at a centre distance of 480 mm. The drive is impulsive, highly loaded or high-speed. It uses a cranked link. The quote states a minimum chain tensile strength of 57,800 N. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Cranked link on an impulsive, highly loaded or high-speed drive. The quote has a cranked link on an impulsive, highly loaded or high-speed drive; the Renold catalogue says not to use cranked links on these drives.
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  • Centre distance under 30 pitches. The centre distance of 480 mm is under 30 chain pitches; the Renold catalogue recommends 30 to 50 pitches and asks for drives below 30 pitches to be discussed with its technical staff.
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6. Cranked link, severe duty and centre distance: The agent resubmits after fixing the errors

    
The agent's request. Please quote a 12B duplex Renold roller chain drive with a 17-tooth driver sprocket bored to 25 mm and a 57-tooth driven sprocket bored to 50 mm, at a centre distance of 480 mm. The drive is impulsive, highly loaded or high-speed. It uses no cranked link. The quote states a minimum chain tensile strength of 57,800 N. It is ready to send.

    
Verdict: Needs approval.

    
    
      
  • Centre distance under 30 pitches. The centre distance of 480 mm is under 30 chain pitches; the Renold catalogue recommends 30 to 50 pitches and asks for drives below 30 pitches to be discussed with its technical staff.
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  • Drive summary. Minimum tensile strength 57,800 N for the chain; sprockets of 17 and 57 teeth (74 teeth in total), centre distance 480 mm.
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7. Cranked link, severe duty and centre distance: The agent resubmits after fixing the errors

    
The agent's request. Please quote a 12B duplex Renold roller chain drive with a 17-tooth driver sprocket bored to 25 mm and a 57-tooth driven sprocket bored to 50 mm, at a centre distance of 700 mm. The drive is impulsive, highly loaded or high-speed. It uses no cranked link. The quote states a minimum chain tensile strength of 57,800 N. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Drive summary. Minimum tensile strength 57,800 N for the chain; sprockets of 17 and 57 teeth (74 teeth in total), centre distance 700 mm.
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Narration transcript
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The text of the narrated walkthrough, step by step.

    
    
      
  1. Welcome to a demo of Predictika's Validator. An AI sales agent prepares a roller chain drive for a customer: a Renold BS roller chain (06B to 32B, simplex, duplex or triplex), a driver and a driven stock sprocket with their tooth counts and bores, the centre distance, and more. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the Renold Transmission Chain Catalogue and returns a verdict, every reason and the figures it computed.
    2. 
      
  2. I will start with the first request by the agent.
    3. 
      
  3. The agent says. Please quote a 06B simplex Renold roller chain drive. The drive is ordinary duty. The rest of the request is on screen. The quote states a minimum chain tensile strength of 9,800 N.
    4. 
      
  4. Before it goes out, the agent calls the validator.
    5. 
      
  5. Blocked, with two findings, all in one answer. The driven sprocket has 150 teeth; the Renold catalogue says no driven sprocket should have more than 114 teeth. The quote states a minimum tensile strength of 9,800 N; the catalogue gives 8,900 N for this chain.
    6. 
      
  6. The validator returned two blocking findings in one answer. A check that reads one field at a time would pass most of this; it shows only when the choices in the quote are checked against each other.
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  7. What this shows: for a stock sprocket table that depends on chain size, strands and tooth count (346 stock sizes), a rules-based CPQ can do this only with workarounds.
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  8. Now the agent resubmits.
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  9. The corrected request. It changes the driven sprocket teeth to 114 and the stated minimum chain tensile strength as to 8,900 N.
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  10. It calls the validator again.
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  11. This time the validator clears it.
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  12. Both earlier findings are cleared, and the validator's figure matches the quote.
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  13. Two problems caught in one call, fixed in one pass, and a clean quote. That is the value of Predictika's validator: catching mistakes before they reach the customer. Now you can try the other scenarios yourself.
    14.