Standard Tote Shuttle
The workhorse of the tote range. Fixed-format case handling at 2,500 boxes an hour in single-aisle high-density racking, with no charging downtime.
SLS900 Series · Standard
Fixed format, maximum rate.
The Standard Tote Shuttle gives up dimensional flexibility to buy speed. Where the case format is standardised and stable, it is the fastest machine in the range by a wide margin, and the simplest to maintain.
One tote standard, end to end
Built around a single tote at 850 × 650 × 500 mm. Standardising the box is what buys the speed: no width mechanism to actuate, no dimensional check on every cycle.
Throughput you can add later
Shuttles can be added to an aisle that is already running, so capacity grows with volume. Aisle count and rack geometry are the decisions to get right at the start.
No charging downtime
Power comes from the running track, so there is no battery swap, no charging window, and no need to oversize the fleet to cover machines that are off the job.
| Movement | Bidirectional, single aisle |
|---|---|
| Payload | Rated 35 kg / max 50 kg |
| Goods type | Cartons, totes, or square objects |
| Throughput, per aisle | 2,500 boxes/hr |
| Continuous Runtime | Unlimited · charges on track. Busbar/LTO battery |
| Max speed | 6 m/s |
| Position accuracy | ±3mm |
| Positioning method | DC servo + positioning photoelectric sensor + RFID |
2,500 boxes / hour
Where the SLS900 Standard excels
This model trades dimensional flexibility for speed, so it pays off hardest wherever the case format has already been standardised and the volume is high enough that peak rate sets the size of the system.
Uniform-tote grocery and FMCG
Operations that already run a single tote standard across inbound, storage and store despatch. The format discipline is done, so the fastest machine is the right one.
Single-format e-commerce
High order counts on a narrow carton range, where throughput at peak decides how many aisles get built.
Buffering ahead of pack
Feeding pack and despatch stations at rate, so the constraint moves back to the people rather than the storage.
Scaling by replication
Single-aisle by design. Capacity grows by adding identical aisles, which keeps commissioning predictable and spares simple.
The complete system
The complete Standard Shuttle system
Tote shuttles handle every horizontal move inside the rack. Servo lifts carry cases between levels, and interface lines connect the rack to the rest of the building. Throughput is set by how many shuttles and lifts you run rather than by the structure, so density and speed are specified separately.
01 · Box shuttle
Travels the rack on rail, bidirectionally on the Standard, Variable and Sorting & Buffering shuttles, and across aisles on the 4-Way. Positioning to ±3 mm by DC servo, photoelectric and RFID.
02 · Layer-changing lift
Servo belt drive carrying up to 100 kg across two cargo compartments, positioning to ±2 mm, at 6 m/s unloaded.
03 · High-density racking
Multi-deep, multi-level rack from 2 to 30 m tall with aisles from 10 to 100 m long, reconfigurable as the SKU profile changes.
04 · Interface lines and charging
Chain in and out conveyors at the rack face, and a conductor rail running the length of the aisle. Shuttles collect power continuously as they travel, so they never stop to charge.
Specs
The SLS900 Standard in Full.
| Specification | SLS Standard |
|---|---|
| Movement | Bidirectional, single aisle |
| Payload | Rated 35 kg / max 50 kg |
| Throughput, per aisle | 2,500 boxes/hr |
| Max speed | 6 m/s along aisle |
| Acceleration | 2 m/s² |
| Maximum carton dimensions (L×W×H) | 850 × 650 × 500 mm |
| Lift fork speed, in / out | 10 / 36 m/min |
| Lift fork positioning | ±1.5 mm |
| Positioning accuracy | ±3 mm |
| Continuous runtime | Unlimited · charges on track |
| Operating temperature | −25 to 45 °C |
| Specification | SLS Standard |
|---|---|
| Drive | Synchronous belt, electric braking |
| Travel motor | 1,000 W |
| Fork motor | 400 W |
| Positioning method | DC servo, photoelectric and RFID |
| Backup battery | Lithium titanate, 2.9 Ah |
| Supply voltage | DC 48 V ±10% |
| Charging style | Rail track contact line |
| Communication | 5 GHz / 2.4 GHz dual band, RS-485 |
| Structure | Q235B steel, ≥235 MPa yield |
| System availability | ≥97% to FEM 9.222 |
| Rack height range | 2 to 30 m |
Safety and certification
What protects people and stock.
Obstacle detection
HWA sensors stop the shuttle before contact, whether the obstruction is a load, a person or another machine.
Anti-fall and end stops
HWA sensors and mechanical end stops hold the shuttle on rail at the limits of travel.
Emergency stop
Red emergency stop on the machine, halting the shuttle immediately.
Battery protection
Over-temperature, overcharge and over-discharge protection on the onboard lithium titanate pack.
Alarm and interference
Onboard alarm function, with dual-band wireless chosen for resistance to interference across a busy rack.
Certification
CE to Machinery Directive 2006/42/EC, verified by SGS across the shuttle, the shuttle lift and the tote AS/RS system. Manufacturing certified to ISO 14001:2015.
Frequently Asked Questions
The SL900 Standard, specifically.
How many shuttles does one Standard Tote Shuttle aisle need?
Enough to cover the cycle demand of that aisle, which is a function of aisle length, level count and how often the deepest locations are called. A short, busy aisle can need more shuttles than a long, slow one. The number falls out of simulation rather than from a rule of thumb, which is why we ask for an order profile before quoting.
What happens if a case is outside the accepted dimensions?
It is rejected at the inbound check rather than carried into the rack, because an out-of-tolerance case is the most common cause of a stoppage deep in a structure where recovery is slowest. Operations running close to the tolerance limit usually add a dimensioning step at goods-in.
Can Standard tote shuttles be added to a rack that is already running?
Yes. Shuttles are added to an existing aisle without structural work, so throughput can be bought incrementally as volume grows. What cannot be changed later without rework is aisle count and rack geometry, so those are the decisions worth over-specifying at the start.