Threading Machine Rollers 16-22mm – P2.5 Pitch, CDRG45 Spare

This is the 16–22 mm threading roller set for the CDRG45 bar threading machine — covering 16 mm, 18 mm, 20 mm and 22 mm rebar at P2.5 thread pitch, supplied as 3 sets of rollers in a storage case. The rollers are what actually form the thread, so they are the wearing tooling of the machine and are replaced when thread quality drops.

Fits

• Bar Threading Machine CDRG45 — threads TMT rebar from 16 mm to 40 mm for mechanical couplers

For larger bar, use the 25–32 mm roller set (P3.0 pitch). Between the two sets you cover the machine's working range.

What it does and when to replace it

A bar threading machine forms a parallel thread onto the end of a rebar so that two bars can be joined with a mechanical coupler instead of a lap splice. The thread is not cut away in one pass — it is rolled and formed by hardened rollers pressing into the rotating bar. Each bar diameter needs rollers matched to it, and the thread pitch has to match the coupler being used, which is why this set is specific to 16–22 mm bar at P2.5 pitch.

Replace the rollers when threads start coming out shallow, ragged or inconsistent, when couplers become tight or reluctant to run on, or when you can see wear or chipping on the roller profile. Thread quality is what the strength of the joint depends on, so worn rollers are a structural issue, not just a cosmetic one — the coupler connection is only as good as the thread under it.

Specifications

Buying, GST and delivery

• Supplied with a GST invoice (18% GST — CGST + SGST within Maharashtra, IGST interstate), ITC eligible
• Dispatched F.O.R. Pune to sites across India
• Supplied by the manufacturer of the CDRG45 machine — founded 1983, ISO 9001:2015, MSME/Udyam registered

Frequently asked questions