Description
New metro lines in Hanoi and Ho Chi Minh City run through ground cut by tunnel boring machines. Those machines hold together with some very large bolts. The Snap-on TE3005C torque wrench gives a TBM crew a plain dial for that work. It reads in foot-pounds, and Lost in HCM lists it with a chart.
A one-needle dial for the tunnel face
Basic means a single needle that shows the torque as you pull. There is no lamp and no second pointer to reset. As a result, the TE3005C has fewer parts to fail in wet, muddy tunnel air. A fitter watches the needle rise and stops at the target. Then the shift engineer reads the same needle before signing off.
Catalog figures for the TE3005
| Item | TE3005 (Snap-on CAT1500i) |
|---|---|
| Square drive | 1-1/2 in |
| Range | 3,000 ft-lb |
| Increments | 50 ft-lb |
| Length | 140 in |
| Width | 5-1/2 in |
| Head depth | 2-13/16 in |
| Handle note | Includes 94TQPA 10 ft extension handle |
These figures come from the U.S. reading table in Snap-on catalog CAT1500i. Per the catalog, a C at the end of the stock number orders the version with a certificate of calibration. So the TE3005C is the C form of the TE3005. Lost in HCM’s title says with Chart, though, so confirm what that paperwork holds.
TBM joints that suit the Snap-on TE3005C torque wrench
- Cutterhead segment and cutter housing bolts after a planned stop.
- Main drive motor and gearbox flange bolts.
- Thrust cylinder and erector arm bracket bolts.
- Back-up gantry and frame bolts after a move.
However, some TBM makers call for hydraulic tensioners on the largest joints. Always follow the machine manual first.
Where the 2% band starts
Lost in HCM files the TE3005C under US Reading/Standard 2% Accuracy. Snap-on defines that grade as within 2% of reading, from 20% of full scale to full scale. On a 3,000 ft-lb dial, the band therefore begins at 600 ft-lb. For lighter bolts on the same machine, such as covers and hose brackets, pick a smaller Torqometer.
Space, people and handling
Tunnels leave little room to swing a long lever. So plan each pull before the TE3005C goes in, and check that the handle clears the shield wall. Two people often share a wrench this size. One pulls while the other steadies the head and reads the dial. Also keep it in a dry spot between jobs, because tunnel water carries grit. Snap-on warns never to break fasteners loose with a Torqometer, so crack seized nuts with a breaker bar first.
Order the Snap-on TE3005C torque wrench
Tunnel contractors and TBM service teams can source this wrench from Lost in HCM, the SMK Vietnam partner that supplies it locally. To plan ahead of your next cutter change, request a quote from Lost in HCM. For lighter tools, browse the torque wrenches category, visit snapon.com for brand details, or contact SMK Vietnam about your project.
Tunnel crew questions about the TE3005C
What is 3,000 ft-lb in N·m?
About 4,070 N·m. So convert any metric value in the TBM manual before you set the target.
Does a long handle come with it?
Snap-on’s catalog notes that the TE3005 includes a 94TQPA 10-foot extension handle. Ask Lost in HCM to confirm the contents of your order.
Does the chart mean a calibration certificate?
Not by itself. The catalog links the C suffix to a certificate of calibration, while Lost in HCM’s title says with Chart. Check the paperwork before you order.
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