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Stainless Steel Encoders

A Range of Absolute and Incremental Rotary Encoders for Harsh Environments

This includes totally immersible rotary encoders to IP69, "explosion proof" encoders with ATEX certification and heavy duty encoders with high shock resistance and long life bearings.

These encoders are used off shore, in wind farms, the food and beverage industry, in construction and utility vehicles, and many other applications where corrosion resistance and high levels of water protection are required.

Table of Incremental Stainless Encoders

Body Size *	Shaft	Resolution ppr	ATEX Options	Stainless Options	100°C	Series
47.5mm	Solid 10mm	1-3600	✔	✔	✔	HD20
58mm	Solid 10mm	1-10000	-	✔	-	RI59
67.3mm	Solid 10mm	1-5000	✔	✔	✔	HD25
70mm	Solid 10mm	1-10000	✔	✔	-	RX70/71
90.2mm	Hollow 10 / 12.7mm	1-3600	✔	✔	✔	HSD25
95.2mm	Hollow 1"	15-5000	✔	✔	✔	HSD37
3.75"	Solid 1" thread	15-5000	✔	✔	✔	DWD38

* Body size : Just a guide, please see data sheets.

Table of Absolute Stainless Encoders

Body Size *	Shaft	Resolution ppr	ATEX Options	Stainless Options	100°C	Series
58mm	Solid 10mm	Up to 29 Bit	-	✔	-	AC59/61
58mm	Solid 10/12mm	12 Bit ST	-	✔	✔	AR62/63
70mm	Solid 10mm	Up to 26 Bit	✔	✔	-	AX70/71

* Body size : Just a guide, please see data sheets.

The Hengstler AR62 and AR63, part of the Hengstler ACURO range are the very latest compact and robust absolute encoders for harsh environments.

Hengstler ACURO-XRobust absolute rotary encoders are truly heavy duty with extra long-life bearings and unique seals. They are built within a compact 58mm diameter housing and are ideal for marine, harsh environment and food & beverage industries where wash down resistance is critical.

The Hengstler XRobust range of encoders is available with either a stainless housing (AR63) or an aluminium housing (AR62).

The products on this page are all stainless steel encoders some are absolute, others incremental and a selection are available with ATEX certification. There are separate pages on this website listing all the ATEX Certified Encoders, the ones shown here represent the ones with stainless steel enclosure options.

Hengstler AC59/61 Solid Shaft Absolute Encoders
58mm or 61.5mm diameter, 10mm shaft.
Up to 29 Bit (17 Bit ST, 12 Bit MT)
5VDC or 10-30VDC
Max Speed 6,000 rpm continuous
All versions Stainless
-40°C - +85°
IP67
SSI/BiSS, Parallel, CAN, PROFIBUS, DeviceNet, INTERBUS. 868Kb PDF

Hengstler AR62/63 Series Absolute Encoders Single Turn
Solid Shaft, 10mm/12mm
Housing dia 58mm
12 Bit Single Turn Resolution
10-30VDC
Max Speed 5,000 rpm
-40°C to +100°C
Aluminium or Stainless Steel Versions
IP67 or IP69K (Submersible)
SSI, BiSS, or CANopen 389Kb PDF

Hengstler AX70/71 Series Solid Shaft Absolute Encoders
70mm diameter, 10mm solid shaft
26 Bit (14 Bit ST, 12 Bit MT) Resolution
10-30VDC
Max Speed 10,000 rpm (+60°C Max)
Max Speed 6,000 rpm (+40°C Max)
Aluminium or Stainless Steel Versions
-40°C - +60°C T4
Up to IP67. ATEX II
SSi, PROFIBUS, CAN
168Kb PDF

Hengstler DWD38 Series Solid Shaft (threaded) Encoders
Housing dia 3.75 inches
15-5,000 ppr (specify on order)
5-26VDC
Max Speed 3,600 rpm (peak 6,000)
-40°C to +100°C (+80°C ATEX)
Nickel or Stainless Steel Versions
IP66/67, NEMA 7, ATEX II
160Kb PDF

Hengstler HD20 Series Solid Shaft Encoders
Approx 47.5mm x 52.3mm 10mm shaft
1-3,600 ppr (specify on order)
5-26VDC or ATEX 5VDC or ATEX 7-26VDC
Max Speed 6,000 rpm.
Nickel or Stainless Steel versions.
-40°C to +100°C (+80°C ATEX)
IP66/67, NEMA 4X, NEMA 6P, ATEX II
164Kb PDF

Hengstler HD25 Series Solid Shaft Encoders
Housing 67.3mm x 67.3mm 10mm shaft
1-5,000 ppr (specify on order)
5-26VDC or ATEX 5VDC or ATEX 7-26VDC
Max Speed 6,000 rpm.
Nickel or Stainless Steel versions.
-40°C to +100°C (+80°C ATEX)
IP66/67, NEMA 4X, NEMA 6P, ATEX II
160Kb PDF

Hengstler HSD25 Series Solid Shaft Encoders
Housing 90.2mm x 90.2mm 10mm/12.7mm shaft
1-3,600 ppr (specify on order)
5-26VDC or ATEX 5VDC or ATEX 7-26VDC
Max Speed 3,600 rpm (peak 6,000).
Nickel or Stainless Steel versions.
-40°C to +100°C (+80°C ATEX)
IP66/67, NEMA 4X, NEMA 6P, ATEX II
180Kb PDF

Hengstler HSD37 Series Hollow Shaft Encoders (up to 1")
Housing dia 92.5mm
15-5,000 ppr (specify on order)
5-26VDC
Max Speed 3,600 rpm (peak 6,000)
Anodized Aluminium or Stainless
+40°C to +100°C (+80°C ATEX)
IP66/67, NEMA 6, ATEX II
176Kb PDF

Hengstler RI59 Solid Shaft Incremental Encoders
58mm diameter, 9.52/10mm solid shaft
Up to 10,000 ppr
5VDC or 10 - 30VDC
Max Speed 10,000 rpm
All Versions are Stainless Steel
-10°C - +70°C
IP67 585Kb PDF

Hengstler RX70/71 Series Solid Shaft Incremental Encoders
70mm diameter, 10mm solid shaft
Up to 10,000 ppr
5VDC or 10-30VDC
Max Speed 10,000 rpm (+60°C Max)
Max Speed 6,000 rpm (+40°C Max)
Aluminium or Stainless Steel Versions
-25°C - +60°C T4
Up to IP67. ATEX II
115Kb PDF