Kässbohrer K.SSL 33 E

The K.SSL 33 E is a non-tipping cement silo semi-trailer of 33 m³ with an on-board electric compressor for discharging, which Kässbohrer presented at IAA Transportation 2026. Kässbohrer calls it Europe’s first and only zero-emission cement silo, and Europe’s first and only cement silo semi-trailer compatible with electric trucks. This page is built from two Kässbohrer newsroom releases, of 29 July 2026 and 15 September 2026, the undated silo range overview and non-tipping silo product pages on Kässbohrer’s German-language site, and the English silo series brochure (v5, September 2024), all read on 9 November 2026.

Overview and presentation

Kässbohrer showed the silo at IAA Transportation 2026 in Hannover, held from 15 to 20 September 2026, among ten vehicles it presented for general cargo, bulk, liquid, intermodal and heavy transport. The release of 15 September 2026 calls it the K.SSL 33 E, the release of 29 July 2026 the Kässbohrer SSL 33 Zero Emission Cement Silo. The non-tipping silo product page lists an entry K.SSL E 33 / 2 - 6 / 24 under “Silosattelanhänger - Liegend” and gives no figures for it.

The silo range overview page says the silo was developed together with a leading cement transport company for e-truck conformity; the July release says Kässbohrer developed it together with an important customer. The same release says Kässbohrer entered the silo for the International Trailer Awards 2027 in the body category (“Aufbau”) and invited votes for it on the award’s Community Choice page until 31 August 2026; the overview page lists it as nominated for the International Trailer Award 2027 in the category “Body”. No document opened gives a start of series production.

Tank, weight and length

The September release says the tare weight was reduced to 3,800 kg to compensate for the additional weight of electric trucks, and the overview page describes the lightweight construction with “nur 3.800 kg Eigengewicht” as unmatched for e-truck applications. The July release calls the silo compact, at 7,650 mm long. The non-tipping product page’s code legend names eight positions — brand, type, product group, two special product-group abbreviations, manhole, kingpin capacity and axle capacity — and does not decode the K.SSL E 33 / 2 - 6 / 24 entry.

No document opened gives the number of axles, the brakes, the suspension, the tank diameter, the wheelbase, the kingpin load, the permissible total weight, or the number of compartments and manholes of the K.SSL 33 E.

Electric compressor and discharge

According to the September release, the electric compressor for fully emission-free discharge was integrated at the side without compromising the compact vehicle length of 7,650 mm, so that, in Kässbohrer’s words, full operational capability is kept even on confined sites. The overview page lists an on-board e-compressor for fully emission-free operation. No document opened gives the compressor’s output, its maker, its discharge rate or how it is supplied with power.

Electric-truck compatibility and payload

The September release says the K.SSL 33 E’s weight distribution was designed so that the additional battery weight of electric trucks is carried safely while all legal requirements are met; the July release says the silo was designed from the ground up for compatibility with electric trucks. The overview page describes it as fully compatible with diesel trucks as well. How the EU weight limits treat the extra mass of zero-emission vehicles is set out in gross combination weight, GVW and axle loads, and how a battery-electric truck is built in electric trucks explained.

Kässbohrer states the payload effect in three wordings. The September release says the silo allows a recovery of up to 44% of the payload in combination with an electric truck; the overview page says it compensates up to 44% of the e-truck’s payload-related weight loss; the July release speaks of a saving of 44% of the transport capacity otherwise lost to the heavy battery systems of electric trucks. With a diesel truck, the two documents differ: the September release gives a payload advantage of 3%, the overview page a fuel saving of up to 3%.

The overview page puts the CO₂ saving at up to 100.2 tonnes per year with an electric truck and 12.8 tonnes per year with a diesel truck. The July release attributes the 12.8 tonnes of CO₂ with a diesel truck to the silo’s reduced weight and its electric compressor.

The K.SSL non-tipping silo series

The September release calls the K.SSL 33 E a non-tipping silo semi-trailer (“Nichtkipp-Siloauflieger”). The non-tipping product page describes Kässbohrer’s K.SSL silos as resting on an extruded half-frame for lower weight, and the silo series brochure (v5, September 2024) offers the K.SSL in volumes of 31, 33, 35, 38, 40, 45 and 54 m³ according to the density of the material carried, and lists no electric version; the overview page gives volume options of 31 to 54 m³ and a tare from 3,800 kg for the range. The brochure and the product page describe the series’ discharge options: standpipe strings under or within the chassis for discharge at the rear, and lateral discharge via a funnel on the left or right side. Silo semi-trailers as a body type are described in trailer types explained and among the dry bulk tankers.

For the conventional K.SSL 33 / 2 - 10 / 24, the brochure’s table gives an external length of 9,385 mm, a tank diameter of 2,550 mm, a wheelbase of 6,475 mm, a fifth-wheel height of 1,220 mm, a “W”-type aluminium tank with one compartment, and “3 units BPW 9 ton axles with air suspensions and 22.5’’disc brakes, automatic 1st axle lifting” with EBS 2S/2M. These are the conventional vehicle’s figures; no document opened gives the running gear of the K.SSL 33 E.

Source notes

Kässbohrer presented the K.SSL 33 E at IAA Transportation 2026 in Hannover, held from 15 to 20 September 2026. Its newsroom release of 15 September 2026 calls it the K.SSL 33 E, its release of 29 July 2026 the Kässbohrer SSL 33 Zero Emission Cement Silo. The non-tipping silo product page lists an entry K.SSL E 33 / 2 - 6 / 24 and gives no figures for it. The figures are Kässbohrer’s: a volume of 33 m³, a tare weight of 3,800 kg and a vehicle length of 7,650 mm, with an electric compressor integrated at the side. Two Kässbohrer documents word the benefit with a diesel truck differently: the September release gives a payload advantage of 3%, the undated silo overview page a fuel saving of up to 3%. With an e-truck, the September release gives a recovery of up to 44% of the payload, and the overview page says the silo compensates up to 44% of the e-truck’s payload-related weight loss. The overview page puts the CO₂ saving at up to 100.2 tonnes per year with an e-truck and 12.8 tonnes per year with a diesel truck. The July release says the silo was entered for the International Trailer Awards 2027 in the body category; the overview page calls it nominated. No document opened gives the axles, brakes, suspension, tank diameter, wheelbase, kingpin load, permissible total weight, compartments or manholes, the compressor’s output or power supply, or a start of series production. The silo brochure (v5, September 2024) lists the K.SSL series in volumes of 31, 33, 35, 38, 40, 45 and 54 m³ and no electric version; for the conventional K.SSL 33 / 2 - 10 / 24 it gives an external length of 9,385 mm, a tank diameter of 2,550 mm, a wheelbase of 6,475 mm, a fifth-wheel height of 1,220 mm and three BPW 9 ton axles with air suspension and 22.5-inch disc brakes.