BOMwiki the bill-of-materials encyclopedia
30,454,201 parts mapped · 193,225 items
Discussion History

Forklift

Product

Overview

The forklift is an electric counterbalance truck for indoor warehouse and dock work. It lifts and transports palletized loads on two forks projecting ahead of the front wheels; a heavy Counterweight cast from iron and bolted to the rear chassis balances the load moment about the front axle. Electric drive produces no exhaust, making the truck suitable for enclosed and food-grade environments, and keeps noise low for indoor operation.

How it works

Loads are handled by the Mast Assembly, a telescoping rail structure carrying a fork carriage that rolls on mast rollers. A Lift Hydraulic Cylinder raises the carriage via leaf chains, and a pair of Tilt Cylinder units rake the mast forward and back to cradle the load. These actuators are fed by the Hydraulic System, where an electric Pump Motor drives a gear pump through a Control Valve Block block that the operator meters with control levers.

Propulsion comes from the Traction Drive, whose AC traction motor turns the front wheels through a reduction gearbox and drive axle. Both motors draw from the Traction Battery, a 48V lead-acid pack that doubles as ballast low in the chassis. Power is metered by the Motor Controller, which uses IGBT and MOSFET power stages to regulate torque and recover energy under braking. The rear Steer Axle provides the tight steering geometry that lets the truck pivot in narrow aisles, and the operator is protected overhead by the Overhead Guard.

Forklift parts and their functions

13 top-level parts · 4,153 parts in total · full bill of materials below
Forklift parts diagram: 1 mast assembly, 2 traction drive, 3 hydraulic system, 4 traction battery, 5 motor controller, 6 steer axle, 7 counterweight, 8 overhead guard, 9 operator compartment, 10 wheel assembly, 11 chassis & covers, 12 brake system, 13 electrical system. 4,153 parts in 13 top-level items.
Forklift parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Mast Assembly 15 parts 1× Lifting mast
2 Traction Drive 3 parts 1× Drive motor + axle
3 Hydraulic System 15 parts 1×
4 Traction Battery 8 parts 1× Lead-acid traction pack
5 Motor Controller 8 parts 1× Traction + pump power electronics.
6 Steer Axle 4 parts 1×
7 Counterweight 1× Cast iron
8 Overhead Guard 3 parts 1×
9 Operator Compartment 18 parts 1×
10 Wheel Assembly 5 parts 4× Drive + steer wheels
11 Chassis & Covers 6 parts 1× frame, battery compartment, covers
12 Brake System 5 parts 1× Hydraulic drum brakes on the drive wheels with pedal, master cylinder and parking brake.
13 Electrical System 10 parts 1× Harnesses, contactors, fuses, lighting, alarms and sensors on the 48 V and 12 V circuits.

3D model

No 3D model yet. Have a CAD file of this? Add a 3D model. STL renders right on this page; STEP, FreeCAD, and OpenSCAD sources are welcome too (openly licensed, like all 3D models on BOMwiki).

Build & assembly graph

expand / collapse · shared sub-assemblies converge · links to related products · est. labour
product / assembly shared across products atomic part related product

Tap an assembly to expand/collapse · tap a part to open it · use “Open page” for any node · drag to pan, scroll to zoom.

Bill of materials for Forklift

13 top-level lines · 156 rows shown · 4,153 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Mast Assembly 15 parts forklift-mast-assembly 1× 1 197 assembly
1.1 Inner Mast Rail forklift-inner-mast-rail 1× 1 · part
1.2 Outer Mast Rail forklift-outer-mast-rail 1× 1 · part
1.3 Fork Carriage 3 parts forklift-fork-carriage 1× 1 7 assembly
1.3.1 Carriage Plate forklift-carriage-plate 1× 1 · part
1.3.2 Fork Tine forklift-fork 2× 2 · part
1.3.3 Mast Roller forklift-mast-roller 4× 4 · part
1.4 Lift Chain forklift-lift-chain 2× 2 · part
1.5 Lift Hydraulic Cylinder 4 parts forklift-lift-cylinder 1× 1 5 assembly
1.5.1 Cylinder Barrel forklift-cylinder-barrel 1× 1 · part
1.5.2 Cylinder Piston Rod forklift-piston-rod 1× 1 · part
1.5.3 Oil Seal oil-seal 2× 2 · part
1.5.4 O-Ring Set oring-set 1× 1 · part
1.6 Tilt Cylinder 4 parts forklift-tilt-cylinder 2× 2 5 assembly
1.6.1 Cylinder Barrel forklift-cylinder-barrel 1× 2 · part
1.6.2 Cylinder Piston Rod forklift-piston-rod 1× 2 · part
1.6.3 Oil Seal oil-seal 2× 4 · part
1.6.4 O-Ring Set oring-set 1× 2 · part
1.7 Mast Roller forklift-mast-roller 8× 8 · part
1.8 Mast Bearing & Slide forklift-mast-bearing 16× 16 · part
1.9 Chain Anchor & Pin forklift-chain-anchor 4× 4 · part
1.10 Mast Hose Pulley & Guard forklift-hose-reel 1× 1 · part
1.11 Load Backrest forklift-load-backrest 1× 1 · part
1.12 Sideshifter forklift-sideshifter 1× 1 · part
1.13 Mast Bolt forklift-mast-bolt 60× 60 · part
1.14 Hex Nut forklift-hex-nut 40× 40 · part
1.15 Washer forklift-washer 40× 40 · part
2 Traction Drive 3 parts forklift-traction-drive 1× 1 38 assembly
2.1 Traction Motor 4 parts forklift-traction-motor 1× 1 25 assembly
2.1.1 Stator Assembly 3 parts + deeper › stator-assembly 1× 1 3 assembly
2.1.2 Rotor Assembly 4 parts + deeper › rotor-assembly 1× 1 19 assembly
2.1.3 Motor Housing motor-housing 1× 1 · part
2.1.4 Ball Bearing ball-bearing 2× 2 · part
2.2 Drive Gearbox 3 parts forklift-drive-gearbox 1× 1 7 assembly
2.2.1 Reduction Gear Set forklift-gear-set 1× 1 · part
2.2.2 Ball Bearing ball-bearing 4× 4 · part
2.2.3 Oil Seal oil-seal 2× 2 · part
2.3 Drive Axle 2 parts forklift-drive-axle 1× 1 6 assembly
2.3.1 Axle Shaft forklift-axle-shaft 2× 2 · part
2.3.2 Ball Bearing ball-bearing 4× 4 · part
3 Hydraulic System 15 parts forklift-hydraulic-system 1× 1 202 assembly
3.1 Hydraulic Pump 3 parts forklift-hydraulic-pump 1× 1 4 assembly
3.1.1 Pump Gear Set forklift-pump-gears 1× 1 · part
3.1.2 Oil Seal oil-seal 2× 2 · part
3.1.3 O-Ring Set oring-set 1× 1 · part
3.2 Pump Motor 4 parts forklift-pump-motor 1× 1 25 assembly
3.2.1 Stator Assembly 3 parts + deeper › stator-assembly 1× 1 3 assembly
3.2.2 Rotor Assembly 4 parts + deeper › rotor-assembly 1× 1 19 assembly
3.2.3 Motor Housing motor-housing 1× 1 · part
3.2.4 Ball Bearing ball-bearing 2× 2 · part
3.3 Hydraulic Tank forklift-hydraulic-tank 1× 1 · part
3.4 Control Valve Block 2 parts forklift-control-valve 1× 1 7 assembly
3.4.1 Valve Spool forklift-valve-spool 3× 3 · part
3.4.2 O-Ring Set oring-set 4× 4 · part
3.5 Hydraulic Hose forklift-hydraulic-hose 6× 6 · part
3.6 Hydraulic Fluid forklift-hydraulic-fluid 1× 1 · part
3.7 Hydraulic Fitting forklift-hose-fitting 44× 44 · part
3.8 Hydraulic Steel Tube forklift-hydraulic-tube 10× 10 · part
3.9 Solenoid Valve forklift-solenoid-valve 4× 4 · part
3.10 Cylinder Seal Kit forklift-seal-kit 4× 4 · part
3.11 Hydraulic Filter forklift-hydraulic-filter 2× 2 · part
3.12 Pressure Sensor pressure-sensor 2× 2 · part
3.13 O-Ring Set oring-set 12× 12 · part
3.14 Hex Bolt forklift-hex-bolt 40× 40 · part
3.15 Cable Tie & Clamp forklift-cable-tie 40× 40 · part
4 Traction Battery 8 parts forklift-traction-battery 1× 1 127 assembly
4.1 Lead-Acid Cell forklift-lead-acid-cell 24× 24 · part
4.2 Battery Tray forklift-battery-tray 1× 1 · part
4.3 Cell Connector forklift-cell-connector 24× 24 · part
4.4 Wire Bundle wire-bundle 1× 1 · part
4.5 Cell Vent Cap forklift-cell-cap 24× 24 · part
4.6 Intercell Bolt forklift-intercell-bolt 48× 48 · part
4.7 Battery Connector forklift-battery-connector 1× 1 · part
4.8 Battery Roller forklift-battery-roller 4× 4 · part
5 Motor Controller 8 parts forklift-motor-controller 1× 1 108 assembly
5.1 Bare PCB pcb-bare 1× 1 · part
5.2 Microcontroller mcu 1× 1 · part
5.3 IGBT Power Module igbt-module 6× 6 · part
5.4 Power MOSFET mosfet 8× 8 · part
5.5 Gate Driver Board 3 parts gate-driver-board 1× 1 87 assembly
5.5.1 Bare PCB pcb-bare 1× 1 · part
5.5.2 Gate Driver IC gate-driver-ic 6× 6 · part
5.5.3 SMD Passive (R/C/L) smd-passives 80× 80 · part
5.6 DC-Link Capacitor dc-link-cap 3× 3 · part
5.7 Controller Housing forklift-controller-housing 1× 1 · part
5.8 Heatsink forklift-heatsink 1× 1 · part
6 Steer Axle 4 parts forklift-steer-axle 1× 1 10 assembly
6.1 Steer Axle Beam forklift-steer-axle-beam 1× 1 · part
6.2 Steer Cylinder 4 parts forklift-steer-cylinder 1× 1 5 assembly
6.2.1 Cylinder Barrel forklift-cylinder-barrel 1× 1 · part
6.2.2 Cylinder Piston Rod forklift-piston-rod 1× 1 · part
6.2.3 Oil Seal oil-seal 2× 2 · part
6.2.4 O-Ring Set oring-set 1× 1 · part
6.3 Kingpin forklift-kingpin 2× 2 · part
6.4 Ball Bearing ball-bearing 2× 2 · part
7 Counterweight forklift-counterweight 1× 1 · part
8 Overhead Guard 3 parts forklift-overhead-guard 1× 1 3 assembly
8.1 Guard Frame forklift-guard-frame 1× 1 · part
8.2 Guard Mesh Panel forklift-guard-mesh 1× 1 · part
8.3 Fastener Set fastener-set 1× 1 · part
9 Operator Compartment 18 parts forklift-operator-compartment 1× 1 165 assembly
9.1 Seat Assembly 5 parts seat-assembly 1× 1 7 assembly
9.1.1 Seat Frame seat-frame 1× 1 · part
9.1.2 Seat Foam seat-foam 2× 2 · part
9.1.3 Seat Cover seat-cover 1× 1 · part
9.1.4 Seat Motor seat-motor 2× 2 · part
9.1.5 Seat Heater Mat seat-heater 1× 1 · part
9.2 Steering Wheel forklift-steering-wheel 1× 1 · part
9.3 Accelerator Pedal forklift-accel-pedal 1× 1 · part
9.4 Brake Pedal forklift-brake-pedal 1× 1 · part
9.5 Mast Control Levers 2 parts forklift-mast-control-levers 1× 1 4 assembly
9.5.1 Control Lever forklift-control-lever 3× 3 · part
9.5.2 Lever Linkage forklift-lever-linkage 1× 1 · part
9.6 Instrument Cluster instrument-cluster 1× 1 · part
9.7 Operator Display forklift-display 1× 1 · part
9.8 Wire Bundle wire-bundle 1× 1 · part
9.9 Connector connector 20× 20 · part
9.10 Fuse Box fuse-box 1× 1 · part
9.11 Relay relay 6× 6 · part
9.12 12 V Battery lv-battery 1× 1 · part
9.13 Seat Belt forklift-seat-belt 1× 1 · part
9.14 Mirror forklift-mirror 3× 3 · part
9.15 Switch forklift-switch 12× 12 · part
9.16 Floor Mat & Trim forklift-floor-mat 4× 4 · part
9.17 Hex Bolt forklift-hex-bolt 60× 60 · part
9.18 Cable Tie & Clamp forklift-cable-tie 40× 40 · part
10 Wheel Assembly 5 parts wheel-assembly 4× 4 9 assembly
10.1 Alloy Wheel alloy-wheel 1× 4 · part
10.2 Tire tire 1× 4 · part
10.3 TPMS Sensor tpms-sensor 1× 4 · part
10.4 Lug Nut lug-nut 5× 20 · part
10.5 Valve Stem valve-stem 1× 4 · part
11 Chassis & Covers 6 parts forklift-chassis 1× 1 704 assembly
11.1 Chassis Frame forklift-chassis-frame 1× 1 · part
11.2 Cover Panel forklift-cover-panel 9× 9 · part
11.3 Hinge & Latch forklift-hinge-latch 14× 14 · part
11.4 Hex Bolt forklift-hex-bolt 320× 320 · part
11.5 Hex Nut forklift-hex-nut 180× 180 · part
11.6 Washer forklift-washer 180× 180 · part
12 Brake System 5 parts forklift-brake-system 1× 1 40 assembly
12.1 Brake Drum & Shoes forklift-brake-drum 2× 2 · part
12.2 Brake Master Cylinder forklift-brake-master 1× 1 · part
12.3 Parking Brake forklift-parking-brake 1× 1 · part
12.4 Brake Line forklift-brake-line 6× 6 · part
12.5 Hex Bolt forklift-hex-bolt 30× 30 · part
13 Electrical System 10 parts forklift-electrical 1× 1 2,522 assembly
13.1 Insulated Wire (cut length) forklift-wire 700× 700 · part
13.2 Crimp Terminal forklift-crimp-terminal 1400× 1,400 · part
13.3 Connector connector 140× 140 · part
13.4 Fuse forklift-fuse 30× 30 · part
13.5 Main Contactor forklift-contactor 2× 2 · part
13.6 Work & Marker Light forklift-work-light 9× 9 · part
13.7 Reverse Alarm & Horn forklift-reverse-alarm 1× 1 · part
13.8 Truck Sensor forklift-sensor 14× 14 · part
13.9 Cable Tie & Clamp forklift-cable-tie 220× 220 · part
13.10 Relay relay 6× 6 · part

Something wrong in this list? Report a problem with this BOM.

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $2k–$300k. How estimates work
VendorHQSpecialtyMOQLead time
toyota-industries.com ↗ Kariya, JP Forklifts & logistics 20 units 10–16 wks
🇩🇪KION Group
kiongroup.com ↗
Frankfurt, DE Forklifts (Linde, STILL) 20 units 10–16 wks
🇩🇪Jungheinrich
jungheinrich.com ↗
Hamburg, DE Warehouse trucks 20 units 10–16 wks
crown.com ↗ New Bremen, US Forklifts 20 units 10–16 wks
🇨🇳Hangcha
hcforklift.com ↗
Hangzhou, CN Forklifts & material handling 20 units 10–16 wks

251-word article