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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: LJV
  • Model Number: RE2801XB-H01
  • Pulse/detent: 15/30
  • Rotary angle: 360 degree
  • Mounting: Vertical with PCB
  • Shaft wobble: 0.7xL/30 mm P-P max L-Shaft length
  • Operation temperature: -30℃ to +80℃
  • Rotary torque: 10 to 100gf.cm
  • Contact resistance: Max 1 ohm
  • Application: Home Appliances, Navigation Systems, Automobiles, Audio
  • Signal Output type: Incremental

Packaging & Delivery

Packaging Details 455*285*325mm 1350pcs/Carton
Delivery Time about 13 days

28mm rotary hollow shaft encoder

Our advantages:
1. Competitive factory price.
2. Punctual delivery time.
3. Excellent before and after sales service(response with in 24hours).
4. Certificates: RoHS/ISO9001/14001/TS16949.


Product Description

  RE28 Series Hollow Shaft Encoder specifications

 1. Mechanical Characteristic:

1.1 Shaft Wobble:   0.7xL/30 mm P-P max L-Shaft length     

1.2 Total rotational angle: 360degree
1.3 Rotational torque:  10~100gf.cm;
1.4 Push-pull strength:   Pull:8.0 kgf Push:8.0 kgf Min at 10 sec

1.5 Click Torque :   80 to 200 gf.cm

1.6   Number of Detents(click) :   18detents Step angle:20°±2° or  30detents Step angle:12°±2°  

1.7  Shaft play in axial direction:  0.4mm Max

1.8  Shaft play in rotational wobble: 5°Max

2. Electrical Characteristic:
2.1 Output signal :   A,B 2 signals   
2.2 Rated Power:    DC 5V,A,B lead 5mA Max,C lead 10mA Max
2.3 Insulation Resistance:  More than 100MΩ at DC 250V
2.4 Voltage proof:  1 minute at AC 300V
2.5 Contact resistance between terminals : 1ΩMax

2.6 Resolution:  9pulses/360° or  15pulses/360°


3. Endurable Characteristic:
3.1 Operating temp. range: -30°C to 80°C
3.2 Rotational life: 30,000±200cycles

3.3  Soldering Heat Characteristic:

       dipping in solder:260℃±5℃ or less,within 3S or  Solder by hand:300℃±5℃ or less,within 3S


Packaging & Shipping


Terms Of ShippingShipping MethodTerms of PaymentLead Time Of ProductsMOQ
FOB Shenzhen
By Ocean & By AirT/T12 Days
(Based on you exact quantity)
By International ExpressPaypal
UPSWestern Union
FedExMoney Gram



Company Information

   Our metal stamping & plastic injection & die-casting dept:

Our Assembly lines:

Our Management team:

Our Test Center:

   Our Certifications:



Q1. What do RP, RE & RS stand for? and what does RP09 stands for, for example?

A: RP means rotary potentiometer, RE for rotary encoder, RS for rotary switch,

The RP09 means rotary potentiometer whose housing width is 9.5mm, and so on.


Q2. What is your terms of packing?
A: Generally, we pack our rotary potentiometers in cystosepiment and brown carton with label mark attached to it. If you have special requirement, please tell us and we will check if we could customize it for you.

Q2. What is your terms of payment and delivery?
A:  100% T/T or Paypal before production with shipping term of EXW, of course, we could deliver goods via FEDEX, DHL or UPS according to your request at a comparative low price.

Q3. How about your delivery time?
A: Generally, rotary potentiometer will take around 15 days for the mass production, and about 4 days for samples.

Q4. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Q5. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the rotary potentiometer sample cost and the courier cost.

Q6. Do you test all your goods before delivery?
A: Yes, we have 100% test of rotary potentiometer before delivery

Q7: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price of rotary potentiometer to ensure our customers benefit ;
    2. We respect every customer as our friend and we sincerely do business and make friends with them,  no matter where they come from.


If you have any questions, just feel free to contact Ms Shine Lee: 
Mobile/whats app: +86-13929499601
QQ: 1911124639


Reasons being LJV is your trusted partner:


ü  One-stop shop: LJV supports diversified products and manufacturing capabilities from 1) Tooling; 2) Stamping; 3) Injection Molding; 4) Die-casting to 5) Finished product assemblies– all in international scale and standard.

ü  LJV’s products widely support diversified applications: (1) Automobiles; (2) Audios; (3) Media, (4) Walkie Talkie; (5) Home Appliances; (6) Instruments; (7) Medical Equipment; etc.

ü  LJV goes extra steps to ensure Customer Satisfaction in Quality, Service and Cost is the company’s long-term priority.

ü  LJV certified in ISO 9001; ISO 14001 and TS 16949 as well as ROHS compliance.

ü  LJV has over 100 engineers focus on products and manufacturing innovationand obtained over 30 patents in PRC.

ü  LJV has total 30,000 sqm plant space with over 1,000 experienced employees.

ü  Creating Values for All is the LJV’s theme; the company is aim to create values for our customers, our employees, our partners as well as our society responsibilities.

ü  Visit our website www.ljv.cn/en/ for more information. 

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