UCP Engineer Guide

Use this section when reading UCP pillow block bearing unit results. Use this section with result interpretation, technical snapshot, and the product field guides.

How To Read A UCP Result

1. Confirm the request is for a supported UCP pillow block unit, not UKP or another mounted bearing family.
2. Confirm whether the reference was resolved by part number or dimensions.
3. Check drop_in and the score band: GREEN, YELLOW, or RED.
4. Read gate_report for hard gate failures.
5. Read highlights, missing_info, and differences.rows for risk flags.
6. Compare the technical snapshot fields for d, H, J, N, bolt size, locking style, housing construction, ratings, and mass.
7. Decide whether the candidate can be used, needs review, or must be rejected.

Do

• Do treat GREEN as the strongest UCP candidate class, but still check evidence and differences.
• Do review every YELLOW row before suggesting it as a replacement.
• Do use RED rows as diagnostics unless a non-drop-in review workflow explicitly asks for them.
• Do confirm mounting dimensions d, H, J, and N before relying on a candidate.
• Do check load ratings when the application load is known.
• Do explain locking style or housing differences in plain language.

Don’t

• Do not document UKP as supported by the UCP matcher.
• Do not call a YELLOW row a clean drop-in without naming the risk flags.
• Do not recommend a RED row as a replacement.
• Do not ignore mounting hole N safety.
• Do not use score alone to override hard gates.
• Do not hide missing bolt, housing, locking, or load evidence.

Status Next Actions

Status	Engineer action
OK	Read band, gates, risk flags, and differences before recommending.
AMBIGUOUS_MATCHES	Ask for exact part number, bore, housing size, or key mounting dimensions.
INPUT_RECHECK_REQUIRED	Resolve conflicting bore, dimensions, or family clues before matching.
NO_REFERENCE	Request part number, datasheet, nameplate, or measured d/H/J/N.
ERROR	Do not interpret candidates; retry or escalate with payload.

Tag Next Actions

Tag	What to do next
RISK_L_FOOTPRINT	Confirm base length and available mounting footprint.
RISK_LOCKING_STYLE_MISMATCH	Confirm shaft locking requirements and maintenance preference.
RISK_HOUSING_CONSTRUCTION_MISMATCH	Check housing material/construction against application conditions.
RISK_DYNAMIC_LOWER	Verify dynamic load requirement before use.
RISK_STATIC_LOWER	Verify static load requirement before use.
RISK_WEIGHT_DIFFERENT	Confirm weight difference is acceptable for mounting/support.
RISK_VARIANT_TOKENS_DIFFER	Compare suffixes and variant features against the original.

Example Workflow

When a result is YELLOW because RISK_LOCKING_STYLE_MISMATCH and RISK_DYNAMIC_LOWER appear:

1. Tell the engineer the candidate passed core geometry but is not a clean replacement.
2. Compare locking method with the installed unit.
3. Compare dynamic load rating against the application.
4. Recommend only after the differences are accepted.

Never Claim

• Never claim “same bearing unit” from bore alone.
• Never claim “drop-in” when N, H, or J is missing or failed.
• Never claim lower load rating is acceptable without application review.