E40 Lamp cap gauge - E40-7006-27-7 - E40-7006-28D-1 - E40-7006-52-1 - E40-7006-53-1
E40 Lamp cap gauge | E40-7006-27-7 | E40-7006-28D-1 | E40-7006-52-1 | E40-7006-53-1
- Model：
E40 Lamp cap gauge | E40-7006-27-7 | E40-7006-28D-1 | E40-7006-52-1 | E40-7006-53-1
| IEC60061-3 E40 Lamp gauges | |||
| Model | Gauge | Description | |
| 7006-27-7 | Go gauge for caps on finished lamps E40 | Purpose: to check the maximum dimensions of the screw thread and dimension T1 minimum of E40 caps on finished lamps. Testing: when the cap on a finished lamp has been screwed into the gauge as far as it will go, the centre contact shall be co-planar with, or project beyond, surface X. | |
| 7006-28D-1 | Not go gauge for caps on finished lamps E40 | Purpose: to check the minimum outside(major) diameter of the screw thread, dimension d, of E40 caps on finished lamps. Testing: when the gauge is placed over the thread of the cap on a finished lamp, held cap uppermost, the centre contact shal not project beyond surface X. | |
| 7006-53-1 | Gauge for finished lamps fitted with E40 caps for testing protection against accidental contact E40 | Purpose: to check protection against accidental contact. against accidental contact is assumed to be correct if the test sample being pushed as far as possible into the gauge, plane W does not protrude beyond plane V. | |
| 7006-52-1 | Gauge for finished lamps fitted with E40 caps for testing contact making | Purpose: to check lamp dimensions for contact making in I.E.C. holders. Testing: the shape of lamp with regard to the fit in the lampholder is assumed to be correct, if the lamp can be pushed into the gauge till plane W reaches plane V or projects beyond it. | |
The E40 Lamp cap gauge - E40-7006-27-7 - E40-7006-28D-1 - E40-7006-52-1 - E40-7006-53-1 is a GO (pass) limit gauge built to sheet 7006-27-7 of IEC 60061-3. It checks the maximum dimensions of the cap screw thread and the minimum value of the contact dimension. The E40 cap is an Edison screw with 40 mm nominal major thread diameter — Goliath screw caps used on high-wattage and industrial luminaires. Kingpo machines this gauge in-house from hardened tool steel, inspects it against the sheet before despatch and ships it with a calibration certificate, so it can go straight into an incoming-inspection or production-gauging routine.
What this gauge checks
- Minimum / maximum limit of the thread or named dimension, as defined on the sheet
- That the part is not cut undersize (a GO gauge that will not enter is a reject)
- Mechanical compatibility with the mating part at the adverse end of the tolerance range
The dimension that matters on a E40 cap is 40 mm nominal major thread diameter. It is what decides whether the lamp seats correctly and stays safe in the holder, and it is the geometry this gauge is built around.
Specification
| Standard | IEC 60061-3 (lamp caps, lampholders and gauges) |
| Sheet | 7006-27-7 |
| Cap type | E40 — Edison screw, 40 mm nominal major thread diameter |
| Gauge class | A GO (pass) limit gauge |
| Purpose on the sheet | GO (pass) gauge for caps on finished lamps |
| Material | Hardened tool steel (stainless steel on request) |
| Calibration | Supplied with a calibration certificate; re-calibration available |
| Made by | Kingpo — machined, inspected and calibrated in-house |
How the test is run
- Condition the gauge and the sample together at ambient temperature and make sure both are clean, dry and undamaged.
- Present the gauge to the sample. A GO gauge is assembled using only the weight of the gauge or light finger pressure — never a tool.
- Read the limit feature named on the sheet. On cap gauges the centre contact must be co-planar with, or project beyond, the reference surface.
- Record the result. A GO gauge that will not enter is a reject; do not force it to make the test pass.
The verdict is the sample must accept the gauge freely. Read the gauge, do not force it: a limit gauge that is forced into place tells you nothing about the part and damages the gauge.
GO and NOT GO — why you usually need both
A single limit gauge proves only one side of a tolerance. A GO gauge shows the part is not too small; a NOT GO gauge shows it is not too large. Running both is the only way to demonstrate a cap or a lampholder sits inside the band, and it is what an auditor will expect to see recorded. If you are building a gauge set from scratch, order the two together and keep them in the same case.
This page is the GO gauge. The matching NOT GO gauge for the same series is listed under related products below.
Getting the right sheet
IEC 60061-3 assigns one sheet number per gauge, and the number is what you should order against. Three things decide it: the cap family, whether you are checking a finished lamp or a lampholder, and which feature is being checked — thread, contact-making, protection against accidental contact, insertion torque or a named dimension. Sending us the sheet number avoids the most common error in this category, which is ordering a cap gauge when the test is on the holder, or the other way round.
Frequently asked questions
Is this gauge supplied with a calibration certificate?
Yes. Every Kingpo gauge is inspected against the sheet before despatch and shipped with a calibration certificate. We can also re-calibrate gauges you already hold.
Which lamps does the E40 version cover?
It covers E40 caps — 40 mm nominal major thread diameter. If your lamp uses a different cap family, the sheet number will be different; send us the cap marking and we will identify the sheet you need.
Can you make a gauge to a drawing instead of to a sheet number?
Yes. We machine to customer drawings as well as to IEC 60061-3 sheets, including modified gauges for production gauging where a full standard gauge is impractical.
What wears out on this type of gauge?
The gauging surfaces and any thread. Limit gauges are inspection tools, not production tools: keep them off the production line, store them dry, and re-calibrate on a cycle set by usage rather than by calendar.
Related gauges and equipment
Other E40 gauges in the same cap family:
- E40 Lamp cap gauge - Go gauges for screw threads of lampholders E40 - 7006-25-7
- E40 Lamp cap gauge - Plug gauge for lampholders for testing protection against accidental contact E40 - 7006-24-3
- E40 Lamp Cap Gauge For Testing Contact - Making In Lampholders E40-7006-23-3
- E40 Lamp cap gauge - Not go gauges for screw threads of lampholders E40 - 7006-26-4
- 7006-52-1 Lamp cap gauge for finished lamps fitted with E40 caps for testing contact making
- E40 Lamp cap gauge-7006-28D-1
Send the standard, figure number and quantity to Kingpo technical sales for a quotation and delivery date.
Specification of the E40 Lamp cap gauge - E40-7006-27-7 - E40-7006-28D-1 - E40-7006-52-1 - E40-7006-53-1 — sheet 7006-27-7. The values below follow the IEC 60061-3 gauge sheet; where a dimension is called out on the sheet, the sheet governs and we machine to it.
| Standard | IEC 60061-3 — lamp caps, lampholders and gauges |
| Sheet | 7006-27-7 |
| Cap type | E40 — Edison screw, 40 mm nominal major thread diameter |
| Gauge class | GO (pass) limit gauge |
| Function on the sheet | Go (pass) gauge for caps on finished lamps |
| Material | Hardened tool steel; stainless steel on request |
| Dimensional tolerance | As specified on the IEC 60061-3 gauge sheet |
| Scope of supply | Gauge and calibration certificate |
| Calibration | Calibration certificate supplied; re-calibration available |
| Origin | Kingpo — machined, inspected and calibrated in-house |
Custom versions, alternative materials and re-calibration are available. Send the standard, figure number and quantity for a quotation. Gauges are inspection tools: re-calibrate on a cycle set by usage, not by calendar time.