William Hackett ATEX SS C4 QP Chain Block

WH SS C4 QP Atex Hand Chain Hoist

The William Hackett ATEX SS-C4 QP atex chain hoist is designed, manufactured, and proof load tested in the UK. This atex chain hoist fully complies with the requirements of ATEX Directive 2014/34/EU and Machinery Directive 2006/42/EC, making it suitable for use in potentially explosive and hazardous environments.

All components of the C4 atex chain hoist have been rigorously analysed to identify and mitigate any potential sources of spark risk. Sparks can be generated by fast-moving components, such as the pawls on the ratchet gear. To address this, the WH ATEX SS-C4 QP atex chain hoist incorporates advanced surface technology in the development of critical components, ensuring safe and reliable operation in hazardous areas.

At A Glance

• WLL Range: 500kg to 50t
• Proof Load Test:
  • 0.5t - 10t = 1.5 x WLL.
  • 15t - 50t = 1.25 x WLL
• Safety Factor: 4:1
• Temperature Range: -40°C to +135°C

Key Features of the ATEX Chain Hoist

• Light load capability
  Tested and certified to operate at 2% of the atex chain hoist rated capacity.
• Quad Pawl (QP) mechanism
  • Fitted as standard on products designated “QP”.
  • Enhanced resilience to failure.
  • Finer tolerance adjustment.
  • Endurance tested to twice the industry standard.
• Safety factor
  4:1 safety factor for increased operational security.
• Spark resistance
  Copper-plated hoist components and a stainless steel hand chain ensure the ATEX chain hoist is safe for use in hazardous environments.
• Safety latches
  Hooks are fitted with heavy-duty cast steel latches. The latch and hook tips are integrated to provide a strong, robust hook closure.
• Hook overload and traceability markings
  Hooks feature overload indicator marks on either side of the hook throat (500 kg to 50 t). Both top and bottom hooks are embossed with a batch code, manufacturer’s mark, and working load limit.
• Hand chain joiner
  A unique hand chain joiner provides a quick and secure method of joining the hand chain to the atex chain hoist.
• Hook housings
  Secured with socket head cap screws or hex head bolts and Nyloc insert locking nuts, allowing full inspection.
• Fleeting / cross-hauling capability
  Independently tested and verified (Test Report 2550-7615) for fleeting or cross-hauling applications. The atex chain hoist is certified for angles up to 60° from the vertical without deration of the WLL.
• Load chain
  Fitted with a load chain fully compliant with international standard BS EN 818-7 Grade T (8).
• Operating temperature range
  -40°C to +135°C.
• Proof testing
  100% of atex chain hoists are proof tested to 1.5 times the WLL.
• Finish
  Body has the same marine-grade paint as the WH SS C4 QP subsea corrosion-resistant chain hoist

Atex Classification

Optional Equipment

• Overload limiter.
• Top and bottom hook adaptors.

The William Hackett ATEX SS-C4 QP atex chain hoist is manufactured and proof tested in the UK, delivering assured safety, compliance, and performance for demanding hazardous-area lifting applications.

Hoist Specifications

Dimensional Information - Metric: SS C4 Atex QP

Part Code	WLL	A (mm)	B (mm)	E (mm)	F (mm)	G (mm)	H min (mm)
025.ATEX.SS.053	0.5t	134	155	49.0	40	25.5	350
025.ATEX.SS.103	1t	134	155	49.0	40	25.5	350
025.ATEX.SS.203	2t	157	185	54.5	44	30.0	410
025.ATEX.SS.32D3	3.2t	157	235	61.0	48	37.5	495
025.ATEX.SS503	5t	180	262	85.0	60	43.0	635
025.ATEX.SS/1003	10t	180	406	89.0	83	53.0	815
025.ATEX.SS/1503	15t	210	406	-	108	80.0	1000
025.ATEX.SS/2003	20t	225	550	-	108	80.0	1100
025.ATEX.SS/3003	30t	460	800	-	140	112.0	1550
025.ATEX.SS/5003	50t	580	840	-	180	140.0	2000

Dimensional Information - Imperial: SS C4 Atex QP

Part Code	WLL	A (inch)	B (inch)	E (inch)	F (inch)	G (inch)	H min (inch)
025.ATEX.SS.053	0.5 Ton	5.28	6.10	1.93	1.57	1.00	13.78
025.ATEX.SS.103	1 Ton	5.28	6.10	1.93	1.57	1.00	13.78
025.ATEX.SS.203	2 Ton	6.18	7.28	2.15	1.73	1.18	16.14
025.ATEX.SS.32D3	3.2 Ton	6.18	9.25	2.40	1.89	1.48	19.49
025.ATEX.SS.503	5 Ton	7.09	10.31	3.35	2.36	1.69	25.00
025.ATEX.SS/1003	10 Ton	7.09	15.98	3.50	3.27	2.09	32.09
025.ATEX.SS/1503	15 Ton	8.27	15.98	-	4.25	3.15	39.37
025.ATEX.SS/2003	20 Ton	8.86	21.65	-	4.25	3.15	43.31
025.ATEX.SS/3003	30 Ton	18.11	31.50	-	5.51	4.41	61.02
025.ATEX.SS/5003	50 Ton	22.83	33.07	-	7.09	5.51	78.74

Not Quite Right For Your Application?

We offer a vast range of chain block models from many different suppliers, some of which can offer custom designs or modifications. Take a look at the range available, or get in touch and we will do our best to help.