Stirrup Bending Machine

The Spartan SBM 16V Stirrup Bending Machine is a compact, heavy-duty rebar bending solution designed for fast, safe, and accurate stirrup fabrication on construction sites. Suitable for Ø6 mm to Ø12 mm rebar, it helps improve productivity and bending consistency across residential, commercial, and infrastructure projects while reducing dependence on manual bending.

OVERVIEW

Product Overview

The Spartan SBM 16V Stirrup Bending Machine is a compact, rugged, and exceptionally reliable rebar processing solution designed to mechanize stirrup fabrication on-site. As an Indian MNC and leader in rebar processing, Spartan holds above 75% of the Indian market share in this sector, deploying over 7,000 machines onsite annually and trusted by more than 4,000 satisfied customers. Developed by our experienced design engineers using advanced Solidworks and AutoCAD workflows, the SBM 16V provides a safe, zero-defect, and high-speed alternative to hazardous manual stirrup bending. Perfect for residential, commercial, and infrastructure megaprojects, it processes steel rebar from Ø6 mm up to Ø12 mm with absolute angular precision.

FEATURES

Key Features

01. Intelligent PLC Panel & Bending Control

High-Torque Powertrain

The Spartan SSB 52 and SSB 55 are engineered with heavy-duty power transmission systems for demanding spiral and circular rebar bending. The SSB 55 features dual 5 HP motors, delivering a combined 10 HP to handle high-tensile TMT steel up to Ø40 mm.

97% Efficient Planetary Gearbox

Advanced planetary gearbox technology transfers up to 97% of motor input energy to the bending system, delivering high torque, reduced load inertia, smooth rotational movement, and minimal gearbox jerks for reliable heavy-duty operation.

Maintenance-Free Synthetic Grease

Premium synthetic grease provides excellent thermal stability across varying site temperatures while eliminating periodic gear oil changes, oil leakage, and frequent lubrication maintenance.

Wear-Resistant Bending Components

Critical high-friction rollers feature Electroless Nickel Plating (ENP) for enhanced surface hardness, wear resistance, and corrosion protection, helping extend component life during continuous rebar processing.

02. High-Efficiency Mechanical Powertrain

97% Efficient Planetary Gear Box

Equipped with an advanced planetary gearbox delivering 97% of input motor energy directly to the bending disc. This high-efficiency transmission provides immense torque and gradual speed reduction with reduced load inertia, guaranteeing smooth, jerk-free gear operations.

Lifetime-Warranty Synthetic Oil

SBM 16V utilizes premium synthetic gear lubrication instead of conventional gear oil, eliminating periodic oil changes. This synthetic oil offers low- and high-viscosity thermal stability, resisting oxidation, thermal breakdown, and oil sludge to extend gearbox lifespan.

Dual Sense Limit Switches

Features dual limit switches strategically fitted below the top plate (one at the front and one at the back). These switches accurately sense the home position and degree of bend, restricting bend wheel rotation in 360 degrees to deliver precise bending angles.

03. Ultimate Operator Protection & Ergonomics

Guarded Foot Pedal Operation

Bending strokes are fully operated via a user-friendly foot pedal. The machine runs only when the pedal is kept pressed and stops instantly the moment the foot is removed. To protect operators from falling debris and hazards, a robust foot guard cover is integrated.

Stirrup Measuring Arrangement

A dedicated stirrup measuring arrangement is provided. The required bar length is firmly secured by tightening the stopper plate bush during bending, ensuring identical dimensional consistency across massive batches.

Hard Chrome Plated Critical Parts

To prevent abrasive wear and rust, critical high-contact parts—including the stirrup bending pin, pressure pin, and stirrup support plate—are finished with high-quality hard chrome plating to maintain a superior surface finish.

SPECIFICATIONS

Technical Specifications

Feature / Attribute	SBM 16V Specification Standard
Bending Control Mechanism	Advanced PLC Panel with 3-Bending Selector
Gearbox Design	97% Energy-Efficient Planetary Gear Box
Lubrication Type	Lifetime-Warranty Synthetic Oil (Viscosity stable, no changes)
Motor Capacity	1 HP
Bending Wheel Speed	18 rpm
Overall Machine Weight	125 Kg
Bending Disc / Wheel Diameter	Ø125 mm (Note: Standard page metric specified as 125 Kg)
Machine Dimensions (L x W x H)	1485 x 585 x 825 mm
Limit Switches	Tele-mechanique style with front and back sensors
Operator Safety	Covered Guard Foot Pedal & Emergency Controls
Component Finishing	Hard Chrome Plating on all high-friction Pins and Support Plates

PERFORMANCE

Cutting Performance

Bar Diameter (mm)	Tensile Strength: 41–50 Kg/mm² (Elongation Max 12%)	Tensile Strength: 51–60 Kg/mm² (Elongation Max 16%)	Tensile Strength: 61–70 Kg/mm² (Elongation Max 14.5% / 10% Max)
12 mm	1 Bar	1 Bar	—
10 mm	2 Bars	2 Bars	1 Bar
8 mm	5 Bars	4 Bars	4 Bars
6 mm	6 Bars	6 Bars	6 Bars

Common Questions About Stirrup Bending Machine

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Contact our support and spares team directly for immediate assistance with any spares, service, or product enquiries.

1800 3000 0150

What is the maximum steel bar capacity of the SBM 16V Stirrup Bender?

The SBM 16V can process high-yield steel bars ranging from Ø6 mm to Ø12 mm. For a single thick bar, the maximum processable diameter is 12 mm for steel grades with tensile strengths up to 60 Kg/mm². For smaller diameters, the machine can bend multiple bars simultaneously—shearing up to 2 bars of 10 mm, 5 bars of 8 mm, or 6 bars of 6 mm at the exact same time, dramatically accelerating on-site stirrup output.

How does the SBM 16V's PLC panel help speed up structural site bending?

Traditional bending requires the operator to manually readjust pins and angles after each bend. The SBM 16V features an Advanced PLC Panel where operators can pre-set 3 different bending angles in a single session. This allows for rapid, consecutive multi-angle bends on a single rebar, saving massive processing time and substantially increasing daily site production.

Does the SBM 16V's gearbox require regular oil changes on-site?

No. Traditional gearboxes require periodic oil flushing and replacement, which causes site mess and downtime. The SBM 16V uses a highly efficient planetary gearbox packed with premium Synthetic Oil. This high-performance oil comes with a lifetime warranty, completely eliminating the need for periodic oil changes. It resists thermal breakdown, oxidation, and oil sludge across extreme weather conditions, ensuring a maintenance-free gear train.

What safety features protect our operators when using the SBM 16V?

Operator safety is a core focus of Spartan’s engineering. The SBM 16V utilizes: Guarded Foot Pedal: Operational stroke only executes when the foot pedal is kept pressed. The moment the operator removes their foot, the bending disc stops instantly. Foot Guard Cover: A sturdy steel shield encloses the foot pedal to prevent accidental activation from falling concrete blocks or site hazards. Low-Mount Limit Switches: Dual switches are securely enclosed below the top plate to restrict the bend wheel rotation within safe boundaries.