440 SERIES TWIN CROSS® LARGE DIAMETER BORE GAGES

Maximum Measuring Accuracy
Linear ±0.000040″ (0.001 mm)
Repeatability ≤0.000040″ (0.001 mm)
Gage R & R ≤10% capability in high
tolerance bores

Description

Electronic Direct Reading Absolute Numbers, Bore Gages
No tipping, automatic centering and aligning of the gage in the bore. Dedicated to part size and tolerance.

Notable Features
Light weight, shop-rugged design 24-7 production gage. Open design allows operator to view bore when measuring. High accuracy and repeatability, two-point floating contact. Very easy to use, no tipping and no operator error. Tool steel Rc 62-65, carbide ball contacts, handles Invar steel. Armoloy coating optional.
1. Choose bore gage head based on Ø and type of bore being measured.
2. Choose a holder.
3. Choose an indicator.
4.Use a master ring or adjustable setting master.
Fast Delivery, Rush 24-48 hours or 1-2 weeks
Quick delivery on Twin Cross® sizes 5.118″ (130.0 mm) thru 16.000″ (406 mm)

Cross Size Size Selection		Thru Bores		Blind Hole Bores
Inch	mm	Tool Steel Cross	DIM	Tool Steel Cross	DIM
4.332–4.724	110.1–120.0	440-310	ALL “h” DIM ARE 0.709″ (18 mm)	440-410	ALL “h” DIM ARE 0.276″ (7 mm)
4.725–5.118	120.1–130.0	440-315		440-415
5.119–5.512	130.1–140.0	440-320		440-420
5.513–5.906	140.1–150.0	440-325		440-425
5.907–6.299	150.1–160.0	440-330		440-430
6.300–6.693	160.1–170.0	440-335		440-435
6.694–7.087	170.1–180.0	440-340		440-440
7.088–7.480	180.1–190.0	440-345		440-445
7.481–7.874	190.1–200.0	440-350		440-450
7.875–8.268	200.1–210.0	440-355		440-455
8.269–8.661	210.1–220.0	440-360		440-460
8.662–9.055	220.1–230.0	440-365		440-465
9.056–9.449	230.1–240.0	440-370		440-470
9.450–9.842	240.1–250.0	440-375		440-475
9.843–10.236	250.1–260.0	440-380		440-480
10.237–10.629	260.1–270.0	440-385		440-485
10.630–11.024	270.1–280.0	440-390		440-490
11.025–11.417	280.1–290.0	440-395		440-495
11.418–11.811	290.1–300.0	440-400		440-500
11.812–16.690	300.1–500.0	440-700		440-800
16.691–39.730	500.1–1000	440-705		440-805

The “h” dimension is the distance from the centerline of the measuring conducts to the bottom of the gage head.

440 Series Twin Cross® Measuring Head