Gold Member Since 2015
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Anhui Pandeng Industries Joint Stock Co., Ltd.

Backstop, Bearing, Clutch manufacturer / supplier in China, offering Nj Safety Torque-Limited Contact-Type Backstop, Conveyor Hold Back Device, Tdsl Movable Dual-Purpose Rubber Belt Conveyor for Bulk Packing, Grain Bucket Elevator and so on.

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Supplier Homepage Product Backstop Nj Safety Torque-Limited Contact-Type Backstop, Conveyor Hold Back Device

Nj Safety Torque-Limited Contact-Type Backstop, Conveyor Hold Back Device

Purchase Qty.:
1-999 1,000+
FOB Unit Price: US $10,000 US $1,000
Purchase Qty. (Pieces) FOB Unit Price
1-999 US $10,000
1,000+ US $1,000
Get Latest Price
Production Capacity: 1000PCS Per Month
Transport Package: Wooden Case, Iron Case, Iron Cage, Frame
Payment Terms: L/C, T/T, Paypal, Western Union

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Basic Info
  • Model NO.: NJ
  • Highest Speed of Inner Race: 50r/Min-150r/Min
  • MOQ: 1set
  • Package: Wooden Case, Iron Case, Iron Cage, Frame
  • Specification: ISO9001: 2008
  • HS Code: 8483409000
  • Rated Holdback Moment Te: 11000n.M-700000n.M
  • Standards: ASTM,DIN,Sha,Cema.etc
  • Terms of Shipment: by Sea
  • Trademark: OUNA
  • Origin: Toncheng, China
Product Description
NJ Safety Torque-Limited Contact-Type backstop, Conveyor Hold Back Device

1. Structural features and operating principle
NJ(NYD) contact type wedge holdback (hereinafter referred to as "holdback") is a type of contact type anti-reversing device installed on the low speed shaft of the reducer or pulley shaft, compared with conventional holdback (roller holdback etc.), it has the advantages of big brake moment, reliable drive force, easy release, convenient installation (the requirement for installation accuracy is not high), it is composed of several wedges arranged in certain pattern between the raceways formed by inner race and outer race, when the inner race rotates in opposite direction, under the action of spring force, the inner race and outer race are wedged into an integral part so as to bear the holdback moment , it is widely used on the equipment with holdback requirement such as belt conveyor, bucket elevator etc. 

2 Main technical parameters and structural dimensions of NJ holdback                  Unit: mm
Rated holdback moment
Range of hole diameter d
Highest speed of inner race
Idle resistance moment
Structural dimensionsMax. mass

Note: the hole tolerance is F7 (GB1800-1804-1999), the recommended shaft tolerance is h6 and fit tolerance is F7/h6

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Mr. Kieran Wang
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