William Hackett C4 QT Quiet Chain Block

C4 QT - The Quiet Manual Chain Hoist

The William Hackett C4 QT Chain Hoist is purpose-built for use in noise-sensitive and confined environments where controlled operation is essential.

Its patent-pending design incorporates a unique, reduced-noise braking system, delivering significantly quieter performance than conventional chain blocks. During lifting operations, the QT achieves a noise level of just 75.08 dB at a 0.75 m/min pull rate (lifting).

For added assurance, the QT has been endurance tested to twice the industry standard and is easily identifiable by a high-visibility blue stripe integrated into the hoist casing.

Introducing the QT Hoist - Engineered for Control -  Safer Lifting Where Noise Matters

Designed to perform in demanding conditions, the WH C4 QT delivers powerful lifting capability with a markedly reduced acoustic profile.

Ideal for environments where communication, precision, and control are critical, the reduced-noise braking system establishes a new standard for lifting operations in noise-sensitive applications.

If you are ready to reduce noise and improve on-site safety, complete the form, and a member of our sales team will contact you to discuss your project requirements in detail.

QT Hoist Range

• WLL Range: 500kg - 10t
• Proof Load Test: 1.5 X WLL
• Safety Factor: 4:1
• Temp Range: -40°C to +120°C

Key Features

• Unique Braking System: fitted with a reduced noise braking system, endurance tested to twice the industry norm.
• Independent Acoustic Testing: achieved 75.08 dB at 0.75m per minute pull rate (lifting).
• Light Load Capability: tested and certified at 2% of the chain hoist's rated capacity.
• Safety Latches: hooks are fitted with heavy-duty cast steel latches. The latch and hook tip are integrated, creating a strong and robust hook closure.
• Hook Overload And Traceability Marks: hooks have overload indicator marks on either side of the hook throat (500kg to 10t). Both top and bottom hooks are embossed with a batch code, manufacturer's mark and the working load limit for full traceability and compliance to international standards.
• Hand Chain Joiner: A unique hand chain joiner is used as a quick and secure method of joining the hand chain.
• Hook Housing: secured with socket head cap screws/hex head bolts and Nyloc insert locking nuts to allow full inspection.
• Fleeting/Cross Hauling: independently tested (test report 2550-7615) for fleeting or cross-hauling applications. Certified to angles up to 60° from the vertical without deration of the WLL.
• Load Chain: fitted with a load chain that fully complies with the international standard BS EN818-7 Grade T (8).
• Overload Limiter: available as an option upon request.
• Bottom Hook: available with ball bearing adaptors as an option upon request.
• Manufactured and Proof Tested in the U.K.
• Patent Pending: GB 2516474.0.

Specifications: QT Series Hoists

Dimensional Information

Part Code	WLL	A (mm)	B (mm)	E (mm)	F (mm)	G (mm)	H (mm)
026.053	0.5 Tons	161	155	49.0	40	25.5	350
026.103	1 Ton	161	155	49.0	40	25.5	350
026.163	1.6 Tons	182	173	51.5	40	30.0	390
026.203	2 Ton	182	185	54.5	44	30.0	410
026.323	3.2 Tons	209	235	61.0	48	37.5	495
026.503	5 Ton	209	262	85.0	60	43.0	635
026.753	7.5 Ton	209	233	89.0	83	53.0	775
026.1003	10 Ton	209	365	89.0	83	53.0	815
026.1503	15 Ton	210	406	-	108	80.0	1000
026.2003	20 Ton	225	550	-	108	80.0	1100
026.3003	30 Ton	460	800	-	140	112.0	1550
026.5003	50.0	580	840	-	180	140.0	2000

Areas of Application

Engineered for environments where noise control is critical, the WH QT Hoist delivers a reduced sound output that supports improved operator control and clearer communication. It is particularly well-suited to enclosed or noise-sensitive settings where worker safety is a priority, including defence applications, shipping, mining, engineering laboratories, energy and nuclear facilities, as well as tunnels and confined chambers.

Manual chain hoists are primarily used for the vertical lifting and lowering of loads. The top hook is typically suspended from a beam clamp or beam trolley, which is mounted to a certified and tested beam.

Operation is via a hand chain loop: pulling clockwise raises the load, while pulling anti-clockwise lowers it. The hoist's reduction gearing and mechanical advantage allow a single operator to lift loads manually without the need for external power.

In applications where the load is not directly aligned beneath the suspension point, William Hackett chain hoists have been independently tested and verified to fleet and cross-haul at angles of up to 60 degrees without any reduction in the Working Load Limit (WLL). Chain collectors are available on request to prevent the load chain from contacting the lifted load.

Pre-use inspections and routine maintenance should always be performed, with a statutory LOLER inspection conducted every 12 months.

Specifically designed for sites where noise must be controlled, the WH QT Hoist operates at a lower sound rating, enabling greater control and easier communication. Ideal in enclosed spaces or where noise control for worker safety is paramount, including but not limited to defence applications, shipping, mining, engineering labs, energy and nuclear sites, along with tunnels and chambers.