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Components › Unclassified › Harmonic Drive Systems
HPN-20L-21Add to cart
Series reference image, not this exact model · from harmonicdrive.netHPN-20L-21 — HPN-20L-21 — manufacturer part page image1 / 1
哈默纳科（上海）商贸有限公司 · Harmonic Drive Systems

HPN-20L-21

Unclassified · active · sources 2
specs 13evidence [n]sources 2

No verified public price. Request a quotation from the seller.

80 N·mAllowable average load torque
147 N·mAllowable start/stop torque
21Reduction ratio
1

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Specs.

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field · keyvaluesource sentencesourceEvidenceRetrieved · Changed
Allowable average load torqueallowable_average_load_torque
value
as printed 8080 N·m
source sentenceLimit for Average Torque 80 Nm
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-l-planetary-gearbox/20/hpn-20l-21 · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Allowable start/stop torqueallowable_startstop_torque
value
as printed 147147 N·m
source sentenceLimit for Repeated Peak Torque 147 Nm
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-l-planetary-gearbox/20/hpn-20l-21 · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Allowable start/stop torqueallowable_startstop_torque
valuemeasured at Reduction ratio 21
as printed 147147 N·m
source sentenceHPN-20L-21 20 90 21 67 80 147 256 6,000 < 7 4.6 2.6 1,600 2,100
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-l-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Weightweight
valuemeasured at Reduction ratio 21
as printed 4.64.6 kg
source sentenceHPN-20L-21 20 90 21 67 80 147 256 6,000 < 7 4.6 2.6 1,600 2,100
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-l-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Reduction ratioreduction_ratio
value
as printed 2121
source sentenceHPN-20L-21 20 90 21 67 80 147 256 6,000 < 7 4.6 2.6 1,600 2,100
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-l-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Rated torquerated_torque
valuemeasured at Reduction ratio 21 · Rated life basis Rated Torque L10
as printed 6767 N·m
source sentenceHPN-20L-21 20 90 21 67 80 147 256 6,000 < 7 4.6 2.6 1,600 2,100
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-l-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Rated torquerated_torque
valuemeasured at Reduction ratio 21 · Rated life basis Rated Torque L50
as printed 8080 N·m
source sentenceHPN-20L-21 20 90 21 67 80 147 256 6,000 < 7 4.6 2.6 1,600 2,100
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-l-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Peak torquepeak_torque
valuemeasured at Reduction ratio 21
as printed 256256 N·m
source sentenceHPN-20L-21 20 90 21 67 80 147 256 6,000 < 7 4.6 2.6 1,600 2,100
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-l-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Max input speedmax_input_speed
valuemeasured at Reduction ratio 21
as printed 6,0006000 r/min
source sentenceHPN-20L-21 20 90 21 67 80 147 256 6,000 < 7 4.6 2.6 1,600 2,100
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-l-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Backlashbacklash
valuemeasured at Reduction ratio 21
< 7
source sentenceHPN-20L-21 20 90 21 67 80 147 256 6,000 < 7 4.6 2.6 1,600 2,100
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-l-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Torsional stiffnesstorsional_stiffness
valuemeasured at Reduction ratio 21 · Stiffness region K1 Torsional Stiffness
as printed 2.626000 N·m/rad
source sentenceHPN-20L-21 20 90 21 67 80 147 256 6,000 < 7 4.6 2.6 1,600 2,100
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-l-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Radial loadradial_load
valuemeasured at Reduction ratio 21
as printed 1,6001600 N
source sentenceHPN-20L-21 20 90 21 67 80 147 256 6,000 < 7 4.6 2.6 1,600 2,100
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-l-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Axial loadaxial_load
valuemeasured at Reduction ratio 21
as printed 2,1002100 N
source sentenceHPN-20L-21 20 90 21 67 80 147 256 6,000 < 7 4.6 2.6 1,600 2,100
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpn-l-planetary-gearbox · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
specs 13, 13 shown

Source documents.

2 sources the values were read from

2 documents
DownloadSource files are not published yet: which documents may be published is undecided.
No change
2026-09-08first collected · 2 sources
Next update2026-10-01

Change history kept

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JOINT · HPN-20L-21 · Unclassified
StatusNot applicable
  • Family not yet set

To settle before a verdict

Supplier.

WRC 2026 Beijing exhibitors, and other suppliers.

哈默纳科（上海）商贸有限公司Harmonic Drive Systems
WRC2026-B-008Hall BBooth B110CNharmonicdrive.net · official
This supplier's parts 1,815Supplier page

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