Hilti HST2-R V3 / HST2-HCR V3 Anchor Installation and Operation Instructions

Product Overview

This document provides technical specifications and operating instructions for Hilti HST2-R V3 and HST2-HCR V3 anchors. These anchors are designed for secure fastening in various construction applications.

Definitions and Key Parameters

The total required hole depth, denoted as h₁, is calculated by summing the drill bit depth (h_Δ) and the nominal embedment depth (h_nom):

h₁ = h_Δ + h_nom

The diagram illustrates the relationship between these depths. h_Δ represents the depth achieved by the drill bit, with examples showing h_Δ values of 5mm, 20mm, and 10mm for different drill bit types.

h_nom is the nominal embedment depth, often determined by the anchor's design and application requirements. The term "Profis Engineering" is associated with determining or verifying these parameters.

Anchor Specifications and Installation Data

This section details the specifications for the Hilti HST2-R V3 / HST2-HCR V3 anchor, specifically for M8x70 size, with a load range of 5-20.

The table below provides critical installation values for maximum fixing time (t_fix,max) and minimum fixing time (t_fix,min) based on the anchor's length (L) and the drilled hole depth (h_Δ).

h_Δ	L (mm)						h_nom (mm)
h_Δ	55	70	80	90	100	110	h_nom (mm)
5mm	t_fix,max: 20	t_fix,max: 30	t_fix,max: 40	t_fix,max: 50	t_fix,max: 60	t_fix,max: 38
5mm	t_fix,min: 15	t_fix,min: 25	t_fix,min: 35	t_fix,min: 45	t_fix,min: 55	t_fix,min: 43
20mm	t_fix,max: 10	t_fix,max: 20	t_fix,max: 30	t_fix,max: 40	t_fix,max: 50	t_fix,max: 48
20mm	t_fix,min: 5	t_fix,min: 15	t_fix,min: 25	t_fix,min: 35	t_fix,min: 45	t_fix,min: 53
10mm	t_fix,max: 10	t_fix,max: 20	t_fix,max: 30	t_fix,max: 40	t_fix,max: 58
10mm	t_fix,min: 5	t_fix,min: 15	t_fix,min: 25	t_fix,min: 35	t_fix,min: 63

Note: The table provides fixing times for various anchor lengths (L) and hole depths (h_Δ). The h_nom column indicates the nominal embedment depth.

Installation Procedure

Follow these steps for proper installation of the Hilti HST2-R V3 / HST2-HCR V3 anchors:

Step 1: Drilling the Hole

Drill a hole with a diameter (d₀) of 8mm to the calculated depth (h₁). Ensure the drilling is performed at a 90° angle to the surface. A critical condition to observe is that the minimum clearance between the bottom of the hole and the surface (h_min) must be greater than or equal to 21mm (h_min - h₁ ≥ 21 mm).

Step 2: Hole Cleaning

Clean the drilled hole thoroughly. This can be done using compressed air (recommended pressure: 6 bar / 90 psi) or a suitable cleaning brush to remove all dust and debris.

Step 3: Anchor Insertion

Insert the anchor into the cleaned hole. Use a setting tool, such as the Hilti HS-SC, to drive the anchor into the hole until it is properly seated.

Step 4: Final Setting

Use a hammer to gently tap the anchor, ensuring it is fully seated and flush with the surface.

Step 5: Tightening

Apply a specific tightening torque (T_inst) of 20 Nm to the anchor using an appropriate tool. The required embedment depth is 13mm.

Compatible Components

The anchors are compatible with systems such as SIW 4AT-22, SI-AT-22 (AT Module), and SI-S 1/2"-13 L.

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