SHS450 Opening Protection Cable Roller with 300-400mm Adjustable Clamp Range and Curved Low Friction Chute for 5KG Cable Roller Pulley Use

SHS450 at a Glance

A pole entry is the point where an overhead pull stops being a free run and becomes a fixed passage. On steel hollow section columns that passage is a pre-drilled cut, and the cable usually crosses it while still under tension from the stringing run. The SHS450 clamps over that opening so the cable travels across a curved, smooth chute instead of the raw section wall. Body weight is 5KG, and the open and adjust range of 300-400mm covers the opening widths crews normally meet on street lighting and distribution poles.

Why the entry edge deserves its own tool

Two things happen at an unprotected opening. First, the cable jacket is pressed against a cut edge while the pull load is still on the line. Second, the cable is being redirected, so the contact force is concentrated on a short length of sheath rather than spread along the run. A clamp-on roller addresses both: it removes the metal edge from the contact path and it spreads the change of direction over a curved surface. Crews who fit a guide here generally find the pull needs less effort and the cable leaves the pole in a controlled line.

Verified technical data

Fit check before you order

• Measure the opening width and the section wall thickness on site. Both must sit inside the 300-400mm adjust range and inside the clamp jaw opening.
• Compare the cable outer diameter with the chute curve. A stiff cable that is large relative to the curve will not follow the chute smoothly.
• Confirm whether the entry is vertical or horizontal, since the clamp seats differently on each.
• For openings outside the range, send the measured figures and we will quote per project.

Installation sequence

1. Slack the line at the pole before fitting the roller.
2. Seat the clamp across the opening so the chute lines up with the cable path rather than sitting at an angle.
3. Tighten by hand until the frame is firm against the wall. Tool tightening can distort thin sections.
4. Run a short test pull and watch that the cable stays inside the chute channel.
5. Remove the roller after the pull, check the chute for grit or burrs, and store it dry.

Checks before dispatch

• Frame and clamp thread inspected for cross-threading on the adjust screw.
• Chute contact surface checked for moulding flash, dressed if a raised line is found.
• Weight checked against the 5KG nominal figure.
• Packed in a plywood case with the chute foam wrapped; per case quantity printed on the packing list.
• One year warranty against manufacturing defects under normal site use.

What this page does and does not state

All figures above are taken from the current datasheet for item 21301. This page does not quote a percentage reduction in jacket damage, does not claim fit on every pole section on the market, and does not name a certification beyond the ISO entry in the attribute table. Where a project specification asks for a test report, request it with the enquiry and we will confirm what can be supplied with the order.

Frequently asked questions

Can one roller serve both power and communication entries?

Selection depends on the opening width and the cable diameter, not on the cable function. Confirm both figures and the same unit will carry either cable.

Is the roller a permanent fixture?

No. It is a pulling aid: fit before the pull, remove afterwards.

What if the pole opening is a non standard width?

Send the measured width and wall thickness in the enquiry. Openings outside 300-400mm are quoted per project.

How is the order shipped?

Plywood case, 1 PCS minimum order, L/C or T/T payment, 3-7 days for stock orders.